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113-551: 1990 statistics give its population as 47,256, with 42,044 living in rural areas and 5,212 living in urban areas. The nationalities mainly consist of Tibetans , Hans , and Yis , Hui , and Qiang . By far the most numerous group are the Tibetans whose population is given as 44,601. It is 260 km (160 mi) from north to south and 45 km (28 mi) west to east and has an area of 8,186 km (3,161 sq mi). It borders on Xiangcheng County and Litang County in

226-439: A Yellow River farmers-like population c. 4,700 years ago, resulting in the formation of a "Tibetan cline". Modern Tibetans display genetic continuity to ancient samples from Nepal , with their genetic diversity having been reduced compared to 'Early Ancient Tibetans' suggesting low to none geneflow from outside groups since c. 3,500 years ago. Subsequent internal geneflow resulted in "a northeastern plateau ancestry associated with

339-483: A clade with them to the exclusion of other Eurasians. The Northern East Asian lineage can be represented by Neolithic Yellow River farmers, which are associated with the spread of Sino-Tibetan languages. Modern Tibetans derive up to 20% from Paleolithic Tibetans, with the remaining 80% being primarily derived from Yellow River farmers. The formation of the present-day Tibetan gene pool dates back at least 5,100 years BP. Northeastern Tibetans display additional geneflow from

452-470: A clockwise direction, although the reverse direction is true for Bön . Tibetan Buddhists chant the prayer " Om mani padme hum ", while the practitioners of Bön chant "Om matri muye sale du". Tibet is rich in culture. Tibetan festivals such as Losar , Shoton , Linka , and the Bathing Festival are deeply rooted in indigenous religion and also contain foreign influences. Each person takes part in

565-651: A cluster of mutually unintelligible Sino-Tibetan languages spoken by approximately 8 million people, primarily Tibetan, living across a wide area of East and South Asia , including the Tibetan Plateau and Baltistan , Ladakh , Nepal, Sikkim , and Bhutan. Classical Tibetan is a major regional literary language, particularly for its use in Buddhist literature. The Central Tibetan language (the dialects of Ü-Tsang , including Lhasa ), Khams Tibetan , and Amdo Tibetan are generally considered to be dialects of

678-789: A connection to the South China Sea. Although the hydraulic relationships between the Mekong and the Tonle Sap Great Lake systems during the Holocene are not well understood, it is clear that between 9,000 and 7,500 years ago the confluence of the Tonle Sap and the Mekong was in proximity to the South China Sea. The present river morphology of the Mekong Delta developed over the last 6,000 years. During this period,

791-680: A divergent sister branch to them. Full genome studies revealed that Tibetans and other high-alltitude East Asians formed from two divergent Ancient East Eurasian lineages in Eastern Asia, specifically a lineage representing the Paleolithic population of the Tibetan Plateau, and a lineage associated with Ancient Northern East Asians . The Paleolithic Tibetan lineage was found to be distinct from other deep lineages such as Ust'-Ishim , Hoabinhian / Onge or Tianyuan , but forming

904-454: A frequency of >75%. The widespread presence of this gene may represent one of "the fastest genetic change ever observed in humans". Recent research into the ability of Tibetans' metabolism to function normally in the oxygen-deficient atmosphere above 4,400 metres (14,400 ft) shows that, although Tibetans living at high altitudes have no more oxygen in their blood than other people, they have ten times more nitric oxide and double

1017-478: A high evaporation rate means it is classified as a semi-arid region. Consequently, although the Mun and Chi basins drain 15% of the entire Mekong basin, they only contribute 6% of the average annual flow. Sandy and saline soils are the most common soil types, which makes much of the land unsuitable for wet rice cultivation. In spite of poor fertility, however, agriculture is intensive. Glutinous rice, maize, and cassava are

1130-468: A major distinction in the low-flow hydrology of the river. One fraction comes from melting snow in China and Tibet and the rest from over-season catchment storage in the lower basin. This has implications for the occurrence of drought conditions. For example, if runoff from melting snow in any given year is very low, then flows upstream of Vientiane - Nong Khai would be lower. In a large river system like

1243-559: A major role in the lives of the Tibetan people, conducting religious ceremonies and taking care of the monasteries. Pilgrims plant prayer flags over sacred grounds as a symbol of good luck. The prayer wheel is a means of simulating the chant of a mantra by physically revolving the object several times in a clockwise direction. It is widely seen among Tibetan people. In order not to desecrate religious artifacts such as Stupas , mani stones, and Gompas , Tibetan Buddhists walk around them in

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1356-591: A maximum of about 4.5 m (15 ft) above present levels in the early Holocene about 8 ka. At this time the shoreline of the South China Sea almost reached Phnom Penh and cores recovered from near Angkor Borei contained sediments deposited under the influence of tides, and salt marsh and mangrove swamp deposits. Sediments deposited in the Tonle Sap Great Lake about this time (7.9–7.3 ka) also show indications of marine influence, suggesting

1469-425: A shorter version with pants underneath. The style of the clothing varies between regions. Nomads often wear thick sheepskin versions. In more urban places like Lhasa, men and women dress in modern clothing, and many choose to wear chuba during festivals and holidays like Losar . Tibet has national literature that has both religious, semi-spiritual and secular elements. While the religious texts are well-known, Tibet

1582-402: A single language, especially since they all share the same literary language, while Dzongkha , Sikkimese , Sherpa , and Ladakhi are generally considered to be separate languages. The ethnic roots of Tibetans can be traced back to a deep Eastern Asian lineage representing the indigenous population of the Tibetan plateau since c. 40,000 to 30,000 years ago, and arriving Neolithic farmers from

1695-589: A stretch of some 2,200 km (1,400 mi). Here, it drops 4,500 m (14,800 ft) before it enters the lower basin where the borders of Thailand, Laos, China, and Myanmar come together in the Golden Triangle. Downstream from the Golden Triangle, the river flows for a further 2,600 km (1,600 mi) through Laos, Thailand, and Cambodia before entering the South China Sea via a complex delta system in Vietnam . The upper basin makes up 24% of

1808-409: A total of 156 chapters in the form of Thangkas, which tell about the archaic Tibetan medicine and the essences of medicines in other places. The Cuisine of Tibet reflects the rich heritage of the country and people's adaptation to high altitude and religious culinary restrictions. The most important crop is barley . Dough made from barley flour, called tsampa , is the staple food of Tibet . This

1921-432: Is also home to the semi-spiritual Gesar Epic , which is the longest epic in the world and is popular throughout Mongolia and Central Asia. There are secular texts such as The Dispute Between Tea and Chang (Tibetan beer) and Khache Phalu's Advice . Monogamy is common throughout Tibet. Marriages are sometimes arranged by the parents if the son or daughter has not picked their own partner by a certain age. However, polyandry

2034-514: Is an archaic word meaning "river", loaned from Austroasiatic languages , such as Vietnamese sông (from * krong ) and Mon kruŋ "river", which led to Chinese 江 whose Old Chinese pronunciation has been reconstructed as /*kˤroŋ/ and which long served as the proper name of the Yangtze before becoming a generic word for major rivers. To the early European traders, the Mekong River

2147-438: Is available for heating or lighting, so flat roofs are built to conserve heat, and multiple windows are constructed to let in sunlight. Walls are usually sloped inwards at 10 degrees as a precaution against frequent earthquakes in the mountainous area. Tibetan homes and buildings are white-washed on the outside, and beautifully decorated inside. Standing at 117 metres (384 ft) in height and 360 metres (1,180 ft) in width,

2260-400: Is conducted at the end of the play. There are also many historical myths/epics written by high lamas about the reincarnation of a "chosen one" who will do great things. The most unusual feature of Tibetan architecture is that many of the houses and monasteries are built on elevated, sunny sites facing the south. They are commonly made of a mixture of rocks, wood, cement and earth. Little fuel

2373-487: Is drawn from Buddhist stories and Tibetan history. Tibetan opera was founded in the fourteenth century by Thang Tong Gyalpo , a lama and a bridge-builder. Gyalpo and seven girls he recruited organized the first performance to raise funds for building bridges to facilitate transportation in Tibet. The tradition continued uninterrupted for nearly seven hundred years, and performances are held on various festive occasions such as

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2486-511: Is either rolled into noodles or made into steamed dumplings called momo . Meat dishes are likely to be yak , goat or mutton , often dried or cooked into a spicy stew with potatoes . Mustard seed is cultivated in Tibet and therefore features heavily in its cuisine. Yak yogurt , butter and cheese are frequently eaten and well-prepared yogurt is considered something of a prestige item. Men and Women wear long thick dresses ( chuba ) in more traditional and rural regions. The men wear

2599-661: Is estimated to be around 6.7 million. In addition to the majority living in Tibet Autonomous Region of China , significant numbers of Tibetans live in the Chinese provinces of Gansu , Qinghai , Sichuan , and Yunnan , as well as in India , Nepal , and Bhutan . The Tibetic languages belong to the Tibeto-Burman language group . The traditional or mythological explanation of the Tibetan people's origin

2712-477: Is flooded during the rainy season. The impact of road embankments and similar infrastructure developments on the movement of this flood water is an increasingly important consequence of development. Table 2 summarises the mean annual flows along the mainstream. The mean annual flow entering the lower Mekong from China is equivalent to a relatively modest 450 mm (18 in) depth of runoff. Downstream of Vientiane this increases to over 600 mm (24 in) as

2825-528: Is heterogeneous and active, and is the major factor controlling the course of rivers and the landscapes they carve out. The elevation of the Tibetan Plateau during the Tertiary period was an important factor in the genesis of the south-west monsoon , which is the dominant climatic control influencing the hydrology of the Mekong Basin. Understanding the nature and timing of the elevation of Tibet (and

2938-531: Is little evidence from the last 45 years of data of any systematic changes in the hydrological regime of the Mekong. The internal drainage patterns of the Mekong are unusual among those of large rivers. Most large river systems that drain the interiors of continents, such as the Amazon , Congo , and Mississippi , have relatively simple dendritic tributary networks that resemble a branching tree. Typically, such patterns develop in basins with gentle slopes where

3051-634: Is practiced in parts of Tibet. This is usually done to avoid division of property and provide financial security. Mekong The Mekong or Mekong River is a trans-boundary river in East Asia and Southeast Asia . It is the world's twelfth-longest river and the third-longest in Asia with an estimated length of 4,909 km (3,050 mi) and a drainage area of 795,000 km (307,000 sq mi), discharging 475 km (114 cu mi) of water annually. From its headwaters in

3164-585: Is that they are the descendants of the human Pha Trelgen Changchup Sempa and rock ogress Ma Drag Sinmo. It is thought that most of the Tibeto-Burman speakers in southwest China , including Tibetans, are direct descendants from the ancient Qiang people . Most Tibetans practice Tibetan Buddhism , although a significant minority observe the indigenous Bon religion. There are also smaller communities of Tibetan Muslims and Christians. Tibetan Buddhism influences Tibetan art , drama and architecture, while

3277-675: Is the beginning of the Mekong Delta. The two rivers, the Bassac to the west and the Mekong to the east, enter Vietnam shortly after this. In Vietnam, the Bassac is called the Hậu River (Sông Hậu or Hậu Giang); the main, eastern, branch of the Mekong is called the Tiền River or Tiền Giang. In Vietnam, distributaries of the eastern (main, Mekong) branch include the Mỹ Tho River , the Ba Lai River ,

3390-487: The Balti people are a Muslim ethnicity of Tibetan descent numbering around 300,000. There is some dispute over the current and historical number of Tibetans. The Central Tibetan Administration claims that the 5.4 million number is a decrease from 6.3 million in 1959 while the Chinese government claims that it is an increase from 2.7 million in 1954. However, the question depends on the definition and extent of "Tibet" ;

3503-570: The Central Highlands of Vietnam) therefore helps explain the provenance of sediment reaching the delta and the Tonle Sap Great Lake today. Studies of the provenance of sediments in the Mekong delta reveal a major switch in the source of sediments about eight million years ago (Ma) . From 36 to 8 Ma the bulk (76%) of the sediments deposited in the delta came from erosion of the bedrock in the Three Rivers Area . From 8 Ma to

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3616-471: The EPAS1 gene , also referred to as the "super-athlete gene", which regulates the body's production of hemoglobin, allowing for greater efficiency in the use of oxygen. The genetic basis of Tibetan adaptations have been attributed to a mutation in the EPAS1 gene, and has become prevalent in the past 5,000 years. Ancient Tibetans carried this allele at a frequency of 25–58%, while modern Tibetans carry it at

3729-591: The Hàm Luông River , and the Cổ Chiên River . The Mekong Basin is frequently divided into two parts: the "upper Mekong basin" comprising those parts of the basin in Tibet , Yunnan and eastern Myanmar , and the "lower Mekong basin" from Yunnan downstream from China to the South China Sea . From the point where it rises to its mouth, the most precipitous drop in the Mekong occurs in the upper Mekong basin,

3842-591: The Nam Ngum , Nam Theun , Nam Hinboun, Se Bang Fai , Se Bang Hieng and Se Done Rivers. The Mun - Chi river system from the right bank in Thailand enters the mainstream within this reach. Reach 4: Pakse to Kratie . The main hydrological contributions to the mainstream in this reach come from the Se Kong , Se San , and Sre Pok catchments. Together, these rivers make up the largest hydrological sub-component of

3955-586: The Potala Palace is considered the most important example of Tibetan architecture. Formerly the residence of the Dalai Lama , it contains over a thousand rooms within thirteen stories and houses portraits of the past Dalai Lamas and statues of the Buddha. It is divided between the outer White Palace, which serves as the administrative quarters, and the inner Red Quarters, which houses the assembly hall of

4068-738: The Rai people , followed by the Magars and the Tamang . Tibetan males predominantly belong to the paternal lineage D-M174 followed by lower amounts of O-M175 . Tibetan females belong mainly to the Northeast Asian maternal haplogroups M9a1a, M9a1b, D4g2, D4i and G2ac, showing continuity with ancient middle and upper Yellow River populations. Although "East Asian Highlanders" (associated with haplogroup D1 ) are closely related to East Asian lowland farmers (associated with haplogroup O ), they form

4181-465: The Richter magnitude scale and is unlikely to cause material damage. The difficulty of navigating the river has meant that it has divided, rather than united, the people who live near it. The earliest known settlements date to 210 BCE, with Ban Chiang being an excellent example of early Iron Age culture. The earliest recorded civilization was the 1st century Indianised -Khmer culture of Funan , in

4294-588: The Sherpa people have allele frequencies which are often found in other Tibeto-Burman regions, the strongest affinity was for Tibetan population sample studies done in the Tibet Autonomous Region. Genetically, the Sherpa cluster closest with the sampled Tibetan and Han populations. Additionally, the Sherpa and Tibetans had exhibited affinity for several Nepalese populations, with the strongest for

4407-519: The Sichuan warlord, Liu Wenhui ( 刘文辉 ; 1895–1976), drove the Tibetans back to the Yangtze River and even threatened to attack Chamdo . At Batang, Kesang Tsering, a half-Tibetan, claiming to be acting on behalf of Chiang Kai-shek ( Pinyin : Jiang Jieshi. 1887–1975), managed to evict Liu Wen-hui's governor from the town with the support of some local tribes. A powerful "freebooter Lama" from

4520-826: The Three Parallel Rivers Area in the Hengduan Mountains , along with the Yangtze to its east and the Salween River (Nu Jiang in Chinese) to its west. Then the Mekong meets the China–Myanmar border and flows about 10 km (6 mi) along that border until it reaches the tripoint of China, Myanmar and Laos . From there it flows southwest and forms the border of Myanmar and Laos for about 100 km (60 mi) until it arrives at

4633-863: The Tibet Autonomous Region , 1,496,524 people in Sichuan Province, 1,375,059 people in Qinghai Province, 488,359 people in Gansu Province (mostly in Gannan Tibetan Autonomous Prefecture and Bairi Tibetan Autonomous County ) and 142,257 people in Yunnan Province (mostly in Diqing Tibetan Autonomous Prefecture ). Tibetans account for 0.47% of the total population of the country. Tibetans account for 90.48% of

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4746-895: The Tibetan Government in Exile ) counts 145,150 Tibetans outside Tibet: a little over 100,000 in India; over 16,000 in Nepal; over 1,800 in Bhutan, and over 25,000 in other parts of the world. There are Tibetan communities in the United States , Australia , Brazil , Canada , Costa Rica , France , Mexico , Norway , Mongolia , Germany , Switzerland and the United Kingdom . In the Baltistan region of Northern Pakistan,

4859-497: The Tibetan Plateau , the river runs through Southwest China (where it is officially called the Lancang River ), Myanmar , Laos , Thailand , Cambodia , and southern Vietnam . The extreme seasonal variations in flow and the presence of rapids and waterfalls in the Mekong make navigation difficult. Even so, the river is a major trade route between Tibet and Southeast Asia. The construction of hydroelectric dams along

4972-587: The Tonlé Sap . When the Mekong is low, the Tonle Sap is a tributary : water flows from the lake and river into the Mekong. When the Mekong floods, the flow reverses: the floodwaters of the Mekong flow up the Tonle Sap. Immediately after the Sap River joins the Mekong by Phnom Penh, the Bassac River branches off the right (west) bank. The Bassac River is the first and main distributary of the Mekong. This

5085-646: The Yellow River within the last 10,000 years, and which can be associated with having introduced the Sino-Tibetan languages . Modern Tibetan populations are genetically most similar to other East Asian populations, especially Han Chinese , Bhutanese , as well as other Sino-Tibetan-speaking populations . They show relatively more genetic affinity for modern Central Asian than modern Siberian populations. They also share some genetic affinity for South Asian groups . Genetic studies shows that many of

5198-633: The Yunnan component makes up almost 30% of the average dry season flow. A major concern is that the ongoing and planned expansion of dams and reservoirs on the Mekong mainstream in Yunnan could have a significant effect on the low-flow regime of the lower Mekong basin system. Reach 2: Chiang Saen to Vientiane and Nong Khai . This reach is almost entirely mountainous and covered with natural forest although there has been widespread slash and burn agriculture. Although this reach cannot be termed "unspoiled",

5311-547: The 1950s to around 50% in the mid-1990s. Agricultural expansion and population pressure are the major reasons for land use and landscape change. Both drought and flood are common hazards in the Delta, which many people believe is the most sensitive to upstream hydrological change. Table 1: Country share of Mekong River Basin (MRB) and water flows By taking into account hydrological regimes, physiography land use, and existing, planned and potential resource developments,

5424-422: The 8th century. Rectangular and painted on cotton or linen, they usually depict traditional motifs including religious, astrological, and theological subjects, and sometimes a mandala . To ensure that the image will not fade, organic and mineral pigments are added, and the painting is framed in colorful silk brocades. Tibetan folk opera, known as lhamo , is a combination of dances, chants and songs. The repertoire

5537-557: The Bathing Festival three times: at birth, at marriage, and at death. Tibetan art is deeply religious in nature, from the exquisitely detailed statues found in Gonpas to wooden carvings and the intricate designs of the Thangka paintings. Tibetan art can be found in almost every object and every aspect of daily life. Thangka paintings, a syncretism of Indian scroll-painting with Nepalese and Kashmiri painting, appeared in Tibet around

5650-765: The British invasion of Tibet under Francis Younghusband in 1904, which alarmed the Manchu Qing rulers in China, but the locals revolted and killed him. The British invasion was one of the triggers for a Qing effort to retake Kham in 1904, when Feng Quan was sent into Tibet. His policies of land reform and reductions to the numbers of monks led to the Batang uprising which started at a Batang monastery. Christian missionaries had already withdrawn from Batang in 1887. The Qing government in Beijing then appointed Zhao Erfeng ,

5763-547: The Chinese occupation in consequence of their familiarity with the Chinese language and modern education." The name Batang is a transliteration from Tibetan meaning a vast grassland where sheep can be heard everywhere (from ba - the sound made by the sheep + Tibetan tang which means a plain or steppe). In ancient times Qiang people lived here, and in the Han dynasty a kingdom called Bainang ('White Wolf') became established. It

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5876-780: The Great Lake via the Tonle Sap River . Phnom Penh also marks the beginning of the delta system of the Mekong River. Here the mainstream begins to break up into an increasing number of branches. In Cambodia, wet rice is the main crop and is grown on the flood plains of the Tonle Sap, Mekong, and Bassac (the Mekong delta distributary known as the Hậu in Vietnam) Rivers. More than half of Cambodia remains covered with mixed evergreen and deciduous broadleaf forest, but forest cover has decreased from 73% in 1973 to 63% in 1993. Here,

5989-603: The Kingdom of Thailand which is the mechanism for cooperation with regard to riverine trade on the upper stretches of the Mekong. The Mekong basin is one of the richest areas of biodiversity in the world. Only the Amazon boasts a higher level of bio-diversity. Biota estimates for the Greater Mekong Subregion (GMS) include 20,000 plant species, 430 mammals, 1,200 birds, 800 reptiles and amphibians, and an estimated 850 freshwater fish species (excluding euryhaline species mainly found in salt or brackish water, as well as introduced species ). The most species rich orders among

6102-440: The Lamas, chapels, 10,000 shrines, and a vast library of Buddhist scriptures. Traditional Tibetan medicine utilizes up to two thousand types of plants, forty animal species, and fifty minerals. One of the key figures in its development was the renowned 8th century physician Yuthog Yontan Gonpo , who produced the Four Medical Tantras integrating material from the medical traditions of Persia, India and China. The tantras contained

6215-415: The Laos-Thailand border for some 850 km (530 mi) as it flows first east, passing the capital of Laos, Vientiane , then turns south. A second time, the river leaves the border and flows east into Laos soon passing the city of Pakse . Thereafter, it turns and runs more or less directly south, crossing into Cambodia . At Phnom Penh the river is joined on the right bank by the river and lake system

6328-421: The Lingka and Shoton festival. The performance is usually a drama, held on a barren stage that combines dances, chants, and songs. Colorful masks are sometimes worn to identify a character, with red symbolizing a king and yellow indicating deities and lamas. The performance starts with a stage purification and blessings. A narrator then sings a summary of the story, and the performance begins. Another ritual blessing

6441-467: The Mekong delta. Excavations at Oc Eo , near modern An Giang , have found coins from as far away as the Roman Empire . This was succeeded by the Khmer culture Chenla state around the 5th century. The Khmer empire of Angkor was the last great Indianized state in the region. From around the time of the fall of the Khmer empire, the Mekong was the front line between the emergent states of Siam and Tonkin (North Vietnam), with Laos and Cambodia, then on

6554-404: The Mekong in the 2000s through the 2020s has caused serious problems for the river's ecosystem , including the exacerbation of drought . The Mekong was originally called Mae Nam Khong from a contracted form of Tai shortened to Mae Khong . In Thai and Lao, Mae Nam ("Mother of Water[s]") is used for large rivers and Khong is the proper name referred to as "River Khong". However, Khong

6667-413: The Mekong is divided into six distinct reaches : Reach 1: Lancang Jiang or Upper Mekong River in China . In this part of the river, the major source of water flowing into the river comes from melting snow on the Tibetan plateau . This volume of water is sometimes called the "Yunnan component" and plays an important role in the low-flow hydrology of the lower mainstream. Even as far downstream as Kratie,

6780-603: The Mekong, seasonal flows can be quite variable from year to year. Although the pattern of the annual hydrograph is fairly predictable, its magnitude is not. The average monthly flows along the mainstream are listed in Table 3, providing an indication of their range and variability from year to year. At Pakse , for example, flood season flows during August would exceed 20,000 m /s (5,300,000 US gal/s) nine years out of ten, but exceed 34,000 m /s (9,000,000 US gal/s) only one year in ten. Table 3: Mekong Mainstream monthly discharge, 1960–2004 (m /s). There

6893-442: The Mun and Chi Rivers, that drain a large part of northeast Thailand. Laos lies almost entirely within the lower Mekong basin. Its climate, landscape and land use are the major factors shaping the hydrology of the river. The mountainous landscape means that only 16% of the country is farmed under lowland terrace or upland shifting cultivation . With upland shifting agriculture (slash and burn), soils recover within 10 to 20 years but

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7006-427: The Yangtze (including the region of Batang) but kept control of the Yaklo ( Yenchin ) district which had previously been a Chinese enclave to the west of the river. The bloodless occupation of Chamdo , the major city of the old Tibetan province of Kham , by the 40,000 man army of the People's Republic of China on October 19, 1950, when the whole region fell under Chinese control, served as an important precursor to

7119-471: The administration of the Dalai Lamas . Batang was visited in the 1840s by two French priests, Abbé Évariste Régis Huc (1813–1860) and Abbé Joseph Gabet and a young Tibetan priest, who had been sent on a mission to Tibet and China by the Pope . They described it as a large, very populous and wealthy town. It marked the furthest point of Tibetan rule on the route to Chengdu The town was completely destroyed by an earthquake in 1868 or 1869. Mr. Hosie, on

7232-423: The basin are small. Only 14 have catchment areas that exceed 1,000 km (400 sq mi), yet the greatest amount of loss of forest cover in the entire river system per square kilometer has occurred in this region due to heavy unchecked demand for natural resources. In the south of Yunnan, in Simao and Xishuangbanna Prefectures, the river changes as the valley opens out, the floodplain becomes wider, and

7345-428: The border of Laos with Thailand. Khon Pi Long is a series of rapids along a 1.6 km (1.0 mi) section of the Mekong River dividing Chiang Rai and Bokeo Province in Laos. The name of the rapids means 'where the ghost lost its way'. It then turns east into the interior of Laos, flowing first east and then south for some 400 km (250 mi) before meeting the border with Thailand again. Once more, it defines

7458-417: The coast, torn between their influence. The first European to encounter the Mekong was the Portuguese António de Faria in 1540. A European map of 1563 depicts the river, although even by then little was known of the river upstream of the delta. European interest was sporadic: the Spanish and Portuguese mounted some missionary and trade expeditions, while the Dutch Gerrit van Wuysthoff led an expedition up

7571-440: The delta advanced 200 km (120 mi) over the continental shelf of the South China Sea, covering an area of more than 62,500 km (24,100 sq mi). From 5.3 to 3.5 ka the delta advanced across a broad embayment formed between higher ground near the Cambodian border and uplands north of Ho Chi Minh City . During this phase of its development the delta was sheltered from the wave action of long-shore currents and

7684-452: The delta. For much of its length the Mekong flows through bedrock channels, i.e., channels that are confined or constrained by bedrock or old alluvium in the bed and riverbanks. Geomorphologic features normally associated with the alluvial stretches of mature rivers, such as meanders , oxbow lakes , cut-offs, and extensive floodplains are restricted to a short stretch of the mainstream around Vientiane and downstream of Kratie where

7797-419: The east. Derong County to the south, Markam and Gonjo counties of Tibet and Dêqên County of Yunnan in the west, across the Jinsha or "Golden Sands" River (the upper course of the Yangtze ). It borders Baiyu County to the north. It is warmer here than most of Tibet (because of the lower altitude) and is reported to be a friendly, easy-going place, surrounded by barley fields. The plain surrounding

7910-451: The eastern Tibet and northwestern Yunnan of China. Also there are some Tibetan Hindus who mainly live in China, India and Nepal. According to legend, the 28th king of Tibet, Thothori Nyantsen , dreamed of a sacred treasure falling from heaven, which contained a Buddhist sutra , mantras , and religious objects. However, because the Tibetan script had not been invented, the text could not be translated in writing and no one initially knew what

8023-512: The eventual defeat of the Lhasa government. Chamdo's governor at the time of the occupation was Ngapoi Ngawang Jigme , who later became an official in the government of the People's Republic of China. The previous governor of Chamdo was Lhalu Tsewang Dorje . Batang County is divided into 5 towns and 12 townships . Tibetan people The Tibetan people ( Tibetan : བོད་པ་ , Wylie : bod pa , THL : bö pa ) are an East Asian ethnic group native to Tibet . Their current population

8136-475: The first time in Tibet's history. This invasion led to the 13th Dalai Lama 's escape to India, then his return to proclaim Tibet's total independence from China in 1913, and the end of their "priest-patron" relationship. The American medical missionary, Dr Albert Shelton , lived nearly 20 years in Batang but was killed, apparently by a bandit, in 1922 on a high mountain pass near Batang at the age of 46. In 1932

8249-428: The forearm blood flow of low-altitude dwellers. Tibetans inherited this adaptation due to selected genes associated with Denisovan admixture among Asian populations, highlighting how different environments trigger different selective pressures. Nitric oxide causes dilation of blood vessels, allowing blood to flow more freely to the extremities and aids the release of oxygen to tissues. According to Tibetan mythology ,

8362-692: The governor of Xining , "Army Commander of Tibet" to reintegrate Tibet into China. He was sent in 1905 (though other sources say this occurred in 1908) on a punitive expedition and began destroying many monasteries in Kham and Amdo and implementing a process of sinification of the region: The situation was soon to change, however, as, after the fall of the Qing dynasty in October 1911, Zhao's soldiers mutinied and beheaded him. In February 1910, Qing General Zhong Ying invaded Lhasa in order to directly control Tibet for

8475-616: The harsh geography of Tibet has produced an adaptive culture of Tibetan medicine and cuisine . As of the 2014 census, there are about 6 million Tibetans living in the Tibet Autonomous Region and the 10 Tibetan autonomous prefectures in the provinces of Gansu , Qinghai , Sichuan , and Yunnan . The SIL Ethnologue in 2009 documents an additional 189,000 Tibetic speakers living in India , 5,280 in Nepal and 4,800 in Bhutan . The Central Tibetan Administration 's (CTA) Green Book (of

8588-750: The hydrological impacts of land cover changes induced by the Vietnam War were quantified in two sub-catchments of the lower Mekong River basin. Loss of forest cover in the Thai areas of the lower basin has been the highest of all the lower Mekong countries over the past 60 years. On the Khorat Plateau , which includes the Mun and Chi tributary systems, forest cover was reduced from 42% in 1961 to 13% in 1993. Although this part of northeast Thailand has an annual rainfall of more than 1,000 mm (40 in),

8701-437: The hydrological response is perhaps the most natural and undisturbed of all the lower basin. Many hydrological aspects of the lower basin start to change rapidly at the downstream boundary of this reach. On 19 July 2019 this reach of the river dropped to its lowest level in a century. Officials are particularly concerned as July is in the wet season, when mainstream flows are abundant historically. Locals are blaming low water on

8814-437: The lower basin from Yunnan make up about 15% of the wet season flow at Kratie . This rises to 40% during the dry season, even this far downstream. During the wet season, the proportion of average flow coming from Yunnan rapidly decreases downstream of Chiang Saen, from 70% to less than 20% at Kratie. The dry season contribution from Yunnan is much more significant. The major portion of the balance comes from Laos, which points to

8927-524: The lower basin. Over 25% of the mean annual flow volume to the mainstream at Kratie comes from these three river basins. They are the key element in the hydrology of this part of the system, especially to the Tonle Sap flow reversal. Reach 5: Kratie to Phnom Penh . This reach includes the hydraulic complexities of the Cambodian floodplain, the Tonle Sap and the Great Lake. By this stage, over 95% of

9040-556: The newly constructed Xayaburi Dam , as it enters its test phase prior to the start of commercial operation in October 2019. Reach 3: Vientiane and Nong Khai to Pakse . The boundary between Reach 2 and 3 is where the Mekong hydrology starts to change. Reach 2 is dominated in both wet and dry seasons by the Yunnan Component. Reach 3 is increasingly influenced by contributions from the large left bank tributaries in Laos, namely

9153-587: The northeast cluster, a southern plateau ancestry associated with the south-southwest cluster, and a southeastern plateau ancestry associated with the southeast-central cluster". There was limited contact with Central Asian populations, inline with historical events, evident in mutual geneflow. The expansion of the Tibetan Empire may have left genetic traces in surrounding populations. Genetic studies identified more than 30 genetic factors that make Tibetans' bodies well-suited for high-altitudes, including

9266-426: The number of Tibetan diaspora in India declined to 85,000. Tibetans are known as Bhotiyas in Nepal, where they are majority in regions such as Upper Mustang , Dolpo , Walung region and Limi and Muchu valleys. Nepal is also home to other Tibetic people such as the Sherpa , Hyolmo and Tamang . There are also more than 10,000 Tibetan refugees in Nepal. The Tibetic languages ( Tibetan : བོད་སྐད། ) are

9379-749: The old name of Lao kingdom Lan Xang ; the characters may also be literally understood as "turbulent green river"). It originates in the " three rivers source area " on the Tibetan Plateau in the Sanjiangyuan National Nature Reserve . The reserve protects the headwaters of, from north to south, the Yellow (Huang He), the Yangtze , and the Mekong Rivers. It flows through the Tibetan Autonomous Region and then southeast into Yunnan Province, and then

9492-400: The origins of Tibetans are said to be rooted in the marriage of the monkey Pha Trelgen Changchup Sempa and rock ogress Ma Drag Sinmo. Most Tibetans generally observe Tibetan Buddhism or a collection of native traditions known as Bön (also absorbed into mainstream Tibetan Buddhism). There is a minority Tibetan Muslim population. There is also a small Tibetan Christian population in

9605-442: The other hand, dates this earthquake to 1871. The region of Batang remained under Tibetan control until 1910. Mr. Hosie, who briefly visited the region in 1904 mentions that 400 Tibetan troops were stationed to the south of the town to protect the frontier. The Abbé Auguste Desgodins , who was on a mission to Tibet from 1855 to 1870, wrote: "gold dust is found in all the rivers and even the streams of eastern Tibet". He says that in

9718-727: The present, however, the contribution from the Three Rivers Area fell to 40%, while that from the Central Highlands rose from 11 to 51%. One of the most striking conclusions of provenance studies is the small contribution of sediment from the other parts of the Mekong basin, notably the Khorat Plateau, the uplands of northern Laos and northern Thailand, and the mountain ranges south of the Three Rivers area. The last glacial period came to an abrupt end about 19,000 years ago (19 ka ) when sea levels rose rapidly, reaching

9831-436: The principal crops. Drought is by far the major hydrological hazard in this region. As the Mekong enters Cambodia, over 95% of its flows have already joined the river. From here on downstream the terrain is flat and water levels rather than flow volumes determine the movement of water across the landscape. The seasonal cycle of changing water levels at Phnom Penh results in the unique "flow reversal" of water into and out of

9944-796: The principal left bank tributaries enter the mainstream, mainly the Nam Ngum and Nam Theun. The flow level falls again, even with the right bank entry of the Mun-Chi system from Thailand. Although the Mun–Chi basin drains 20% of the lower system, average annual runoff is only 250 mm (10 in). Runoff in the mainstream increases again with the entry from the left bank of the Se Kong from southern Laos and Se San and Sre Pok from Vietnam and Cambodia. Table 2: Lower Mekong Mainstream annual flow (1960 to 2004) at selected sites. Flows at Chiang Saen entering

10057-624: The region claimed by the CTA is more expansive and China more diminutive . Also, the Tibetan administration did not take a formal census of its territory in the 1950s; the numbers provided by the administration at the time were "based on informed guesswork". According to the Sixth National Population Census of the People's Republic of China (2010), there are 6,282,187 Tibetans nationwide: There are 2,716,388 people in

10170-528: The region gained support from the Tibetan forces and occupied Batang, but later had to withdraw. By August 1932 the Tibetan government had lost so much territory the Dalai Lama telegraphed the Government of India asking for diplomatic assistance. By early 1934 a ceasefire and armistices had been arranged with Liu Wen-hui and Governor Ma of Chinghai in which the Tibetans gave up all territory to the east of

10283-596: The regions of Ladakh (Ladakhi and Balti ), Kinnaur district in Himachal Pradesh , Spiti valley , Uttarakhand ( Bhotiya ), Sikkim ( Bhutia ), and Arunachal Pradesh ( Khamba , Lhoba and Monpa people ). There are also nearly 100,000 Tibetans living in exile in India since 1959, the majority of them living in Tibetan enclaves such as Dharamshala and Bylakuppe . In 2011, the Indian government reported 150,000 Tibetan diaspora residing in India. In 2019,

10396-495: The river as far as Vientiane in 1641–42. The French invaded the region in the mid-19th century, capturing Saigon in 1861, and establishing a protectorate over Cambodia in 1863. The first systematic European exploration began with the French Mekong Expedition led by Ernest Doudard de Lagrée and Francis Garnier , which ascended the river from its mouth to Yunnan between 1866 and 1868. Their chief finding

10509-400: The river becomes wider and slower. Major tributary systems develop in the lower basin. These systems can be separated into two groups: tributaries that contribute to the major wet season flows, and tributaries that drain low relief regions of lower rainfall. The first group are left bank tributaries that drain the high rainfall areas of Laos. The second group are those on the right bank, mainly

10622-448: The river develops alluvial channels that are free of control exerted by the underlying bedrock. The Mekong basin is not normally considered a seismically active area as much of the basin is underlain by the relatively stable continental block. Nonetheless, the parts of the basin in northern Laos , northern Thailand , Myanmar and China do experience frequent earthquakes and tremors. The magnitude of these earthquakes rarely exceeds 6.5 on

10735-464: The river landscape is flat. Small changes in water level determine the direction of water movement, including the large-scale reversal of flow into and out of the Tonle Sap basin from the Mekong River. The Mekong Delta in Vietnam is farmed intensively and has little natural vegetation left. Forest cover is less than 10%. In the Central Highlands of Vietnam, forest cover was reduced from over 95% in

10848-633: The support of the Office of Weapons Removal and Abatement within the US State Department Bureau of Political-Military Affairs , to conduct underwater explosive removal. The many maps of the river basin produced throughout recorded history reflect the region's changing human geography and politics. In 1995, Laos, Thailand, Cambodia, and Vietnam established the Mekong River Commission (MRC) to manage and coordinate

10961-409: The total area and contributes 15–20% of the water that flows into the Mekong River. The catchment here is steep and narrow with Soil erosion being a major problem and as a result of this, approximately 50% of the sediment in the river comes from the upper basin. In Yunnan Province in China, the river and its tributaries are confined by narrow, deep gorges. The tributary river systems in this part of

11074-572: The total flow has entered the Mekong system. The focus turns from hydrology and water discharge to the assessment of water level, over- bank storage and flooding and the hydrodynamics that determine the timing, duration and volume of the seasonal flow reversal into and out of the Great Lake. Reach 6: Phnom Penh to the South China Sea . Here the mainstream divides into a complex and increasingly controlled and artificial system of branches and canals. Key features of flow behaviour are tidal influences and salt water intrusion. Every year, 35–50% of this reach

11187-1048: The total population in Tibet Region, 24.44% of the total population of Qinghai and 1.86% of the total population in Sichuan. Of all Tibetans in China, 315,622 people live in cities, 923,177 in towns, and 5,043,388 people (80.3%) live in rural areas. According to the Seventh Census of 2020 , there are 7,060,700 Tibetans living within China. Of the resident population of the Tibet Autonomous Region, 3,204,700 were Tibetans and other ethnic minorities, of whom 3,137,900 were Tibetans, an increase of 421,500, or 15.52%, over 2010, with an average annual growth rate of 1.45%; 66,800 were other ethnic minorities, an increase of 26,300, or 64.95%, over 2010, with an average annual growth rate of 5.13%; and 6,680 were other ethnic minorities, an increase of 26,300, or 64.95%, over 2010, with an average annual growth rate of 5.13%. The average annual growth rate

11300-622: The town is unusually fertile and produces two harvests a year. The main products include: rice, maize, barley, wheat, peas, cabbages, turnips, onions, grapes, pomegranates, peaches, apricots, water melons and honey. There are also cinnabar (mercury sulphide) mines from which mercury is extracted. The low-lying Batang Valley (altitude about 2,740 m) was one of the few regions of Tibet with a Chinese settlement before 1950. There were American Protestant and French Catholic missions here focused on medical and educational projects. "Many Bapa (natives of Batang) acquired high bureaucratic positions following

11413-504: The town of Bathan or Batan, with which he was personally acquainted, there were about 20 people regularly involved in washing for gold in spite of the severe laws against it. Among other mines in this region of Tibet, Abbé Desgodins reported there were five gold mines and three silver mines being worked in the Zhongtian Province in the upper Yangtze Valley, seven mines of gold, eight of silver and several more of other metals in

11526-616: The tripoint of Myanmar, Laos, and Thailand . This is also the point of confluence between the Ruak River (which follows the Thai–Myanmar border) and the Mekong. The area of this tripoint is sometimes termed the Golden Triangle , although the term also refers to the much larger area of those three countries that was notorious as a drug producing region. From the Golden Triangle tripoint, the Mekong turns southeast to briefly form

11639-478: The underlying geological structure is fairly homogeneous and stable, exerting little or no control on river morphology . In marked contrast, the tributary networks of the Salween , Yangtze , and particularly the Mekong, are complex with different sub-basins often exhibiting different, and distinct, drainage patterns. These complex drainage systems have developed in a setting where the underlying geological structure

11752-490: The upper Mekong Valley and mines of gold, silver, mercury, iron and copper in a large number of other districts. "It is no wonder than that a Chinese proverb speaks of Tibet as being at once the most elevated and the richest country in the world, and that the Mandarins are so anxious to keep Europeans out of it." The Qing government sent Feng Quan, an imperial official, to Kham to begin reasserting Qing control soon after

11865-634: The use and care of the Mekong. In 1996 China and Myanmar became "dialogue partners" of the MRC and the six countries now work together in a cooperative framework. In 2000, the governments of China, Laos, Thailand and Myanmar signed a Agreement on Commercial Navigation on Lancang-Mekong River among the Governments of the People's Republic of China, the Lao People's Democratic Republic, the Union of Myanmar and

11978-419: The vegetation does not. Shifting cultivation is common in the uplands of northern Laos and is reported to account for as much as 27% of the total land under rice cultivation. As elsewhere in the basin, forest cover has been steadily reduced during the last three decades by shifting agriculture and permanent agriculture. The cumulative impacts of these activities on the river regime have not been measured. However,

12091-464: The wars in Indochina in the 1970s, a significant quantity of explosives (sometimes, entire barges loaded with military ordnance ) sank in the Cambodian section of the Mekong (as well as in the country's other waterways). Besides being a danger for fishermen, unexploded ordnance also creates problems for bridge and irrigation systems construction. As of 2013, Cambodian volunteers are being trained, with

12204-772: Was 5.13%. There are one region, ten prefectures, and two counties officially established by the government: the Tibet Autonomous Region (TAR), Qinghai Province ( Haibei Tibetan Autonomous Prefecture , Hainan Tibetan Autonomous Prefecture , Huangnan Tibetan Autonomous Prefecture , Guoluo Tibetan Autonomous Prefecture , Yushu Tibetan Autonomous Prefecture , and Haiximenggu Tibetan Autonomous Prefecture ), Sichuan Province ( Aba Tibetan and Qiang Autonomous Prefecture , Ganz Tibetan Autonomous Prefecture , and Muji Tibetan Autonomous County ), Gansu Province ( Gannan Tibetan Autonomous Prefecture and Tianzhu Tibetan Autonomous Prefecture ), and Yunnan Province ( Diqing Tibetan Autonomous Prefecture ). In India Tibetic people are found in

12317-462: Was also known as Mekon River , May-Kiang River and Cambodia River . The local names for the river include: The Mekong rises as the Za Qu ( Tibetan : རྫ་ཆུ་ , Wylie : rDza chu , ZYPY : Za qu ; Chinese : 扎曲 ; pinyin : Zā Qū ) and soon becomes known as the Lancang River ( simplified Chinese : 澜沧江 ; traditional Chinese : 瀾滄 江 ; pinyin : Láncāng Jiāng , from

12430-701: Was an integral part of Tibet during the Tang dynasty . China made some inroads during the Yuan and Ming dynasties, and Mushi , the tribal chief of the Lijang region of Yunnan, was supported by the Ming government in his control of the region between 1568 and 1639. In 1642, Gushri Khan , the leader of the Qoshot Mongols was invited by the leaders of Tibet to aid them and he placed this whole region under his control and

12543-481: Was constructed largely through fluvial and tidal processes. At this time the delta was advancing at a rate of 17 to 18 m (56 to 59 ft) per year. After 3.5 ka, however, the delta had built out beyond the embayment and became subject to wave action and marine currents. These deflected deposition south-eastwards in the direction of the Cà Mau Peninsula , which is one of the most recent features of

12656-542: Was that the Mekong had too many falls and rapids to ever be useful for navigation . The river's source was found by Pyotr Kuzmich Kozlov in 1900. From 1893, the French extended their control of the river into Laos, establishing French Indochina by the first decade of the 20th century. This lasted until the First and Second Indochina Wars expelled French from its former colony and defeated US-supported governments. During

12769-428: Was written in it. Buddhism did not take root in Tibet until the reign of Songtsän Gampo , who married two Buddhist princesses, Bhrikuti of Nepal and Wencheng of China. It then gained popularity when Padmasambhāva visited Tibet at the invitation of the 38th Tibetan king, Trisong Deutson . Today, one can see Tibetans placing Mani stones prominently in public places. Tibetan lamas , both Buddhist and Bön, play

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