Misplaced Pages

#569430

21-755: The range is part of the Trans-Baikal conifer forests ecoregion . The Stanovik Range is part of the Khentei-Daur Highlands , South Siberian System . It rises on the left bank of the upper course of the Onon River and stretches roughly northeastwards for over 110 kilometers (68 mi) between two of its left tributaries, the Kyra and the Aksha . It is bound by the Bylir River valley to

42-533: A 1,000 km by 1,000 km region of mountainous southern taiga stretching east and south from the shores of Lake Baikal in the Southern Siberia region of Russia , and including part of northern Mongolia . Historically, the area has been called "Dauria", or Transbaikal ("the land beyond Lake Baikal"). It is in the Palearctic realm , and mostly in the boreal forests/taiga biome with

63-470: A long period of winter rest; the warm winter weather in Britain can tempt it into leaf as early as the start of January, with the tender young leaves then being killed by the next frost. In its native region, daily minimum temperatures above freezing do not occur until late May or June, with no further frost until the brief summer is over. Larix gmelinii cone scales are used as food by the caterpillars of

84-414: A single bud. The leaves are needle-like, light green, 2–3 cm long; they turn bright yellow to orange before they fall in the autumn, leaving the variably downy reddish-brown shoots bare until the next spring. The cones are erect, ovoid, 1–2 cm (rarely 2.5 cm) long, with 15–25 moderately reflexed seed scales; they are green (rarely purple) when immature, turning brown and opening to release

105-530: A subarctic, humid climate. It covers 200,465 km (77,400 sq mi). The ecoregion is centered on the Yablonoi Mountains , a range that reaches heights of 1,600 m (5,200 ft), and runs southwest to northeast, parallel to Lake Baikal. The western edge of the region is the eastern shore of Lake Baikal and the Barguzin mountain range . The city of Chita is at the northeast of

126-583: Is a species of larch native to eastern Siberia and adjacent northeastern Mongolia, northeastern China ( Heilongjiang ), South Korea and North Korea. Larix gmelinii is a medium-sized deciduous coniferous tree reaching 10–30 m tall, rarely 40 m, with a trunk up to 1 m diameter. The crown is broad conic; both the main branches and the side branches are level, the side branches only rarely drooping. The shoots are dimorphic, with growth divided into long shoots (typically 5–30 cm long) and bearing several buds , and short shoots only 1–2 mm long with only

147-606: Is also a UNESCO World Heritage Site Three large protected areas of the Russian Federation in the Transbaikal ecoregion are: Two large protected areas of the Transbaikal are in Mongolia: Forest fires are always a threat to wooded, dry areas; drought in recent years has increased the threat of wildfire. The area also suffers from pest outbreaks and uncontrolled logging. There is also gold mining in

168-529: Is shrub land of Siberian dwarf pine ( Pinus pumila , dwarf birch ( Betula exilis ), and Juniperus pseudosibirica . Unlike the Sayan and Altai mountains to the west, the climate of the Transbaikal is too extreme to support alpine meadows; the vegetation proceeds from forest directly to higher-altitude shrubs. The extensive tree cover provides good habitat for deer, bighorn sheep, bear, wild boar, and other large mammals. The Transbaikal terrestrial ecoregion covers

189-727: The Lena River ), and the Pacific Ocean (by way of the Amur River ). The climate of the ecoregion is dry-winter subarctic ( Köppen Dwc ). This climate is characterized by long, very cold winters, and cool summers, but with little snow in the winter. The Siberian High (also called the Siberian Anticyclone) keeps the area particularly dry in winter. During the summer, the Asiatic Low brings hot air from

210-436: The seeds when mature, 3–5 months after pollination. The old cones commonly remain on the tree for many years, turning dull grey-black. The scientific name honours Johann Georg Gmelin . Due to the species' variability, it has acquired numerous synonyms in the botanical literature, including L. cajanderi, L. dahurica, L. kamtschatica, L. komarovii, L. kurilensis, L. lubarskii, L. ochotensis . Dahurian larch intergrades with

231-543: The "Lake Baikal" Freshwater Ecoregion (WWF ID:606). This freshwater ecoregion supports a "large lakes" habitat for aquatic life, the primary focus of scientific study being on Lake Baikal itself and fish that spawn in the rivers that feed into it (such as the Barguzin River in the Transbaikal). The Lake Baikal area on the western edge of the ecoregion is a UNESCO Man and Biosphere (MAB) Biosphere Reserve . It

SECTION 10

#1732794263570

252-640: The Taymyr Peninsula, Khatanga river basin, and also the most cold-hardy tree in the world, tolerating temperatures below -70 °C in the Oymyakon – Verkhoyansk region of Yakutia . One tree in Yakutia was recorded as being 919 years old. Dahurian larch is occasionally grown in botanical gardens in Europe and North America; it is not an easy tree to grow in areas with mild winters as it is adapted to

273-452: The Transbaikal exhibits altitude zoning. At the lowest levels in the river valleys and lowlands (0–600 meters), the characteristic vegetation is that of the steppes: bunchgrass ( Stipa capillata ), fescue, junegrass ( Koeleria gracilis), and Filifolium ( Tanacetum sibiricum ). The next level (600-1,100 meters) is a forest-steppe level, and from 1,100 to 1800 meters a forest level featuring Larix gemilii and Pinus sylvestris. Above 1,800 meters

294-587: The area, which is a threat to the streams and bogs. The major cities of the ecoregion are Ulan-Ude and Petrovsk-Zaybaykalsky in Republic of Buryatia , and Chita and Khilok in Zabaykalsky Krai . Otherwise, the region is sparsely populated. The Trans-Siberian Railroad bisects the region from west to east. Larix gmelinii Larix gmelinii , the Dahurian larch or Gmelin larch ,

315-555: The closely related Siberian larch L. sibirica of central and western Siberia where their ranges meet along the Yenisei Valley; the resulting hybrid is named Larix × czekanowskii . As of April 2022 , Plants of the World Online accepts four varieties : Larix gmelinii forms enormous forests in the eastern Siberian taiga , growing at 50–1,200 m altitude on both boggy and well-drained soils, including on

336-509: The deserts of China and Mongolia, raising the temperature in the Transbaikal. To the east of the region, the climate grades into a dry winter humid continental climate ( Dwb ), with longer summers. To the south of the ecoregion in Mongolia, the climate grades into a cold semi-arid climate (Köppen BSk ), with less precipitation than the Transbaikal. Precipitation in the Transbaikal ranges from 400 to 500 millimetres (16 to 20 in)/year in

357-666: The region, and the city of Ulaanbaatar , Mongolia, is just outside the southern point of the region. To the south are the Khentii Mountains in Mongolia. To the east are the temperate grasslands of the Daurian forest steppe ecoregion. To the north is the Vitim tableland. The parallel ridges of the mountains in the region form the continental divide between rivers flowing to the Arctic Ocean (by way of Lake Baikal and

378-512: The relief is dominated by moderate height mountains with an abundance of steep-slopes and faults . The summits display fragments of the original alignment surface. The range rises in an area prone to earthquakes . The slopes of the range are covered with mountain taiga and pre-Alpine forest. The higher elevations have dwarf cedar shrub and are often crowned by golets type bare summits. Trans-Baikal conifer forests The Transbaikal conifer forests ecoregion (WWF ID: PA0609) covers

399-450: The shallow soils above permafrost . It is unique in two respects, being the northernmost tree in the world, reaching 73° 04' 32" N 102° E as creeping forms of the trees in the tundra of the Taymyr Peninsula, 72° 55' 07" N 106° 08' E as comparatively vertical growing single trees and small groups of trees, 72° 31' N 105° 03' E at Lukunsky grove and 72° 28' N 102° 15' E at Ary-Mas as the subtundra sparse forests which are situated both in

420-536: The uplands, to 200 millimetres (8 in)/year in the lower and more southerly areas. The region is mostly forested below the 1,400 meter level. The characteristic trees on the warmer, wetter west side of the Yablonovsky Ridge are Dahurian larch ( Larix gmelinii ) and Siberian pine ( Pinus sibirica ). On the warmer and drier east of the ridge the larch is mixed with Scots pine ( Pinus sylvestris ). The trees are draped with moss and lichen. The flora of

441-529: The west and near its source it connects with the Khentei Range . The width of the Stanovik ranges between a maximum of 70 kilometers (43 mi) and a minimum of 40 kilometers (25 mi). The average summits of the Stanovik reach between 1,200 meters (3,900 ft) and 1,600 meters (5,200 ft). The highest point is a 1,916 meters (6,286 ft) high unnamed peak. Much like in neighboring ranges,

SECTION 20

#1732794263570
#569430