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50-466: Pinus roxburghii , commonly known as chir pine or longleaf Indian pine , is a species of pine tree native to the Himalayas . It was named after William Roxburgh . Pinus roxburghii is a large tree reaching 30–50 metres (98–164 feet) with a trunk diameter of up to 2 m ( 6 + 1 ⁄ 2  ft), exceptionally 3 m (10 ft). The bark is red-brown, thick and deeply fissured at

100-623: A free content work. Licensed under CC BY-SA 3.0 ( license statement/permission ). Text taken from Global Forest Resources Assessment 2020 Key findings​ , FAO, FAO. [REDACTED]  This article incorporates text from a free content work. Licensed under CC BY-SA 3.0 IGO ( license statement/permission ). Text taken from The State of the World's Forests 2020. Forests, biodiversity and people – In brief​ , FAO & UNEP, FAO & UNEP. [REDACTED]  This article incorporates text from

150-462: A broad range of concerns, in what is known as multiple-use management, including: the provision of timber , fuel wood, wildlife habitat , natural water quality management , recreation , landscape and community protection, employment, aesthetically appealing landscapes , biodiversity management, watershed management , erosion control , and preserving forests as " sinks " for atmospheric carbon dioxide . Forest ecosystems have come to be seen as

200-609: A faculty at the Federal University of Paraná , in Curitiba. Today, forestry education typically includes training in general biology , ecology , botany , genetics , soil science , climatology , hydrology , economics and forest management . Education in the basics of sociology and political science is often considered an advantage. Professional skills in conflict resolution and communication are also important in training programs. In India, forestry education

250-426: A large critically endangered heron , is known to roost in chir pine. Chir pine is widely planted for timber in its native area, being one of the most important trees in forestry in northern Pakistan, India and Nepal. For local building purposes, the wood of this tree is the least preferred, as it is the weakest and most prone to decay when compared with other conifers. However, in most low altitude regions, there

300-564: A means to evaluate soil fertility and vigour of the trees. The bark of most pines is thick and scaly, but some species have thin, flaky bark. The branches are produced in "pseudo whorls", actually a very tight spiral but appearing like a ring of branches arising from the same point. Many pines are uninodal, producing just one such whorl of branches each year, from buds at the tip of the year's new shoot , but others are multinodal, producing two or more whorls of branches per year. Pines have four types of leaf : Pines are monoecious , having

350-455: A mixture of the two. Techniques include timber extraction, planting and replanting of different species , building and maintenance of roads and pathways through forests, and preventing fire . The first dedicated forestry school was established by Georg Ludwig Hartig at Hungen in the Wetterau , Hesse , in 1787, though forestry had been taught earlier in central Europe, including at

400-455: A region. A related discipline is the study of sylvics, which focuses on the autecology of genera and species. The provenance of forest reproductive material used to plant forests has a great influence on how the trees develop, hence why it is important to use forest reproductive material of good quality and of high genetic diversity . More generally, all forest management practices, including in natural regeneration systems , may impact

450-440: A small piece of the wood burns for a long time (owing to the high resin content). Of all the conifer species in the area, only P. roxburghii seems to be ideal for that purpose. Every autumn, the dried needles of this tree form a dense carpet on the forest floor, which the locals gather in large bundles to serve as bedding for their cattle, for the year round. The green needles are also used to make tiny hand brooms. The locals of

500-427: Is 75% and 22% respectively with 3% losses, etc. The turpentine is chiefly used as a solvent in pharmaceutical preparations, perfume industry, in manufacture of synthetic pine oil, disinfectants, insecticides and denaturants. It is one of the most important basic raw materials for the synthesis of terpene chemicals which are used in a wide variety of industries such as adhesives, paper and rubber, etc. Chir pine rosin

550-488: Is a relatively non-variable species, with constant morphology over the entire range. Pinus roxburghii contains large amounts of taxifolin . The native range extends from Tibet and Afghanistan through Pakistan , across northern India (in Jammu and Kashmir , Himachal Pradesh , Uttarakhand , Sikkim and Arunachal Pradesh ), Nepal and Bhutan , to Myanmar . It generally occurs at lower altitudes than other pines in

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600-929: Is an important economic segment in various industrial countries, as forests provide more than 86 million green jobs and support the livelihoods of many more people. For example, in Germany, forests cover nearly a third of the land area, wood is the most important renewable resource , and forestry supports more than a million jobs and about €181 billion of value to the German economy each year. Worldwide, an estimated 880 million people spend part of their time collecting fuelwood or producing charcoal, many of them women.  Human populations tend to be low in areas of low-income countries with high forest cover and high forest biodiversity, but poverty rates in these areas tend to be high. Some 252 million people living in forests and savannahs have incomes of less than US$ 1.25 per day. Over

650-526: Is attributed to soil erosion , particularly in the Himalayas. It does not allow any vegetation to grow around it by making soil more acidic through its fallen needles. Usually, the accumulating carpet of needles on the forest floor under these trees makes conditions unfavourable for many common plants and trees to grow. The most common trees which are able to grow in this environment are Rhododendron , banj oak ( Quercus leucotrichophora ) and trees from

700-644: Is imparted in the agricultural universities and in Forest Research Institutes (deemed universities). Four year degree programmes are conducted in these universities at the undergraduate level. Masters and Doctorate degrees are also available in these universities. In the United States, postsecondary forestry education leading to a Bachelor's degree or Master's degree is accredited by the Society of American Foresters . In Canada

750-624: Is mainly suitable to regions with small-scale multi-functional forest management systems Forestry literature is the books, journals and other publications about forestry. The first major works about forestry in the English language included Roger Taverner 's Booke of Survey (1565), John Manwood 's A Brefe Collection of the Lawes of the Forrest (1592) and John Evelyn 's Sylva (1662). [REDACTED]  This article incorporates text from

800-538: Is no other choice, except for the fact that these being tropical latitudes there are other trees at lower altitudes. When this species of pine tree reaches a large girth, the bark forms flat patches which can be broken off in chunks of about 52 cm (8 sq in) by 51 mm (2 in) thick . It has a layered structure like plywood, but the individual layers have no grain. The locals use this easily carvable bark to make useful items like lids for vessels. Blacksmiths of that region also use this bark exclusively as

850-520: Is no sharp boundary between plant taxonomy and dendrology; woody plants not only belong to many different plant families , but these families may be made up of both woody and non-woody members. Some families include only a few woody species . Dendrology, as a discipline of industrial forestry, tends to focus on identification of economically useful woody plants and their taxonomic interrelationships. As an academic course of study, dendrology will include all woody plants, native and non-native, that occur in

900-449: Is now restricted to fir ( Abies ) and Douglas-fir ( Pseudotsuga ). Pines are gymnosperms . The genus is divided into two subgenera based on the number of fibrovascular bundles in the needle. The subgenera can be distinguished by cone, seed, and leaf characters: Phylogenetic evidence indicates that both subgenera have a very ancient divergence from one another. Each subgenus is further divided into sections and subsections. Many of

950-420: Is principally used in paper, soap , cosmetics, paint, varnish, rubber and polish industries. Besides these, other uses include manufacture of linoleum, explosives, insecticides and disinfectants, as a flux in soldering, in brewing and in mineral beneficiation as a frothing agent. Presently, India imports resin which is far superior in quality as well as cheaper than the indigenous one. Quality of resin depends on

1000-436: Is the biological science of studying forests and woodlands , incorporating the understanding of natural forest ecosystems , and the effects and development of silvicultural practices. The term complements silviculture , which deals with the art and practice of forest management. Silvology is seen as a single science for forestry and was first used by Professor Roelof A.A. Oldeman at Wageningen University . It integrates

1050-482: Is the extraction of forest products, are planned and managed to utilize a mix of ecological and agroecological principles. In many regions of the world there is considerable conflict between forest practices and other societal priorities such as water quality, watershed preservation, sustainable fishing, conservation, and species preservation. Silvology ( Latin : silva or sylva , "forests and woods"; Ancient Greek : -λογία , -logia , "science of" or "study of")

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1100-431: Is the foundation of biological diversity at species and ecosystem levels. Forest genetic resources are therefore important to consider in forest management. Genetic diversity in forests is threatened by forest fires , pests and diseases, habitat fragmentation , poor silvicultural practices and inappropriate use of forest reproductive material. About 98 million hectares of forest were affected by fire in 2015; this

1150-652: Is the largest genus of the Pinaceae , the pine family, which first appeared in the Jurassic period. Based on recent Transcriptome analysis, Pinus is most closely related to the genus Cathaya , which in turn is closely related to spruces . These genera, with firs and larches , form the pinoid clade of the Pinaceae. Pines first appeared during the Early Cretaceous, with the oldest verified fossil of

1200-707: Is the sole genus in the subfamily Pinoideae . World Flora Online accepts 187 species names of pines as current, with additional synonyms, making it the largest family among the conifers. The American Conifer Society (ACS) and the Royal Horticultural Society accept 121 species. The highest species diversity of pines is found in Mexico. Pines are widely distributed in the Northern Hemisphere ; they occupy large areas of boreal forest , but are found in many habitats, including

1250-406: The Himalayas , from 500–2,000 m (1,600–6,600 ft), occasionally up to 2,300 m (7,500 ft). The other Himalayan pines are P. wallichiana (blue pine), P. bhutanica (Bhutan white pine), P. armandii (Chinese white pine), P. gerardiana (chilgoza pine), P. densata (Sikang pine) and P. kesiya (Khasi pine). Owing to its shallow roots it

1300-547: The Jaunsar-Bawar region of Uttarakhand have several uses for this tree, which is known in the local dialect as salli . It is also occasionally used as an ornamental tree, planted in parks and gardens in hot dry areas, where its heat and drought tolerance is valued. It is also tapped commercially for resin . On distillation , the resin yields an essential oil, commonly known as turpentine , and non-volatile rosin . The proportion of rosin and turpentine oil in chir pine

1350-643: The Mediterranean Basin . The timber from pine trees is called "pine"; it is one of the most extensively used types of timber. There are currently 818 named cultivars (or trinomials ) recognized by the ACS. It is a well-known type of Christmas tree . Pine trees are evergreen , coniferous resinous trees (or, rarely, shrubs ) growing 3–80 metres (10–260 feet) tall, with the majority of species reaching 15–45 m (50–150 ft) tall. The smallest are Siberian dwarf pine and Potosi pinyon , and

1400-776: The University of Giessen , in Hesse-Darmstadt . In Spain, the first forestry school was the Forest Engineering School of Madrid ( Escuela Técnica Superior de Ingenieros de Montes ), founded in 1844. The first in North America, the Biltmore Forest School was established near Asheville , North Carolina, by Carl A. Schenck on September 1, 1898, on the grounds of George W. Vanderbilt's Biltmore Estate . Another early school

1450-700: The White Mountains of California. An older tree, now cut down, was dated at 4,900 years old. It was discovered in a grove beneath Wheeler Peak and it is now known as " Prometheus " after the Greek immortal . The spiral growth of branches, needles, and cones scales are arranged in Fibonacci number ratios. The new spring shoots are sometimes called "candles"; they are covered in brown or whitish bud scales and point upward at first, then later turn green and spread outward. These "candles" offer foresters

1500-744: The effects of climate change . Most countries in Europe have recommendations or guidelines for selecting species and provenances that can be used in a given site or zone. Forest management is a branch of forestry concerned with overall administrative, legal, economic, and social aspects, as well as scientific and technical aspects, such as silviculture , forest protection , and forest regulation . This includes management for timber, aesthetics , recreation , urban values, water , wildlife , inland and nearshore fisheries, wood products , plant genetic resources , and other forest resource values . Management objectives can be for conservation, utilisation, or

1550-426: The pinene content. Imported resin contains 75–95% pinenes, whereas chir pine resin contains only about 25% pinenes. Pine See List of Pinus species for complete taxonomy to species level. See list of pines by region for list of species by geographic distribution . A pine is any conifer tree or shrub in the genus Pinus ( / ˈ p aɪ n ə s / ) of the family Pinaceae . Pinus

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1600-1211: The Canadian Institute of Forestry awards silver rings to graduates from accredited university BSc programs, as well as college and technical programs. In many European countries, training in forestry is made in accordance with requirements of the Bologna Process and the European Higher Education Area . The International Union of Forest Research Organizations is the only international organization that coordinates forest science efforts worldwide. In order to keep up with changing demands and environmental factors, forestry education does not stop at graduation. Increasingly, forestry professionals engage in regular training to maintain and improve on their management practices. An increasingly popular tool are marteloscopes ; one hectare large, rectangular forest sites where all trees are numbered, mapped and recorded. These sites can be used to do virtual thinnings and test one's wood quality and volume estimations as well as tree microhabitats . This system

1650-665: The Indo-European base *pīt- ‘resin’ (source of English pituitary ). Before the 19th century, pines were often referred to as firs (from Old Norse fura , by way of Middle English firre ). In some European languages, Germanic cognates of the Old Norse name are still in use for pines — in Danish fyr , in Norwegian fura/fure/furu , Swedish fura/furu , Dutch vuren , and German Föhre — but in modern English, fir

1700-450: The base of the trunk, thinner and flaky in the upper crown. The leaves are needle-like, in fascicles of three, very slender, 20–35 centimetres (8–14 inches) long, and distinctly yellowish green. The cones are ovoid conic, 12–24 cm ( 4 + 1 ⁄ 2 – 9 + 1 ⁄ 2  in) long and 5–8 cm (2–3 in) broad at the base when closed, green at first, ripening glossy chestnut-brown when 24 months old. They open slowly over

1750-443: The family Ericaceae (known locally as eonr and lodar ). This could possibly be due to the relative immunity from fire that the thick bark of these species gives them. The Himalayan nettle ( Girardinia diversifolia ) is another plant which seems to thrive well under this tree. The caterpillars of the moth Batrachedra silvatica are not known from foodplants other than chir pine. The white-bellied heron ( Ardea insignis ),

1800-492: The fuel for their furnaces. Old trees which die from fire or drought, undergo some metamorphosis in their wood due to the crystallization of the resin inside the heart wood. This makes the wood become brightly coloured (various shades from translucent yellow to dark red) and very aromatic with a brittle, glassy feel. This form of wood known as jhukti by the locals is very easy to ignite, since it never gets wet or waterlogged. They use it for starting fires and even for lighting, as

1850-650: The genetic diversity of trees. The term genetic diversity describes the differences in DNA sequence between individuals as distinct from variation caused by environmental influences. The unique genetic composition of an individual (its genotype ) will determine its performance (its phenotype ) at a particular site. Genetic diversity is needed to maintain the vitality of forests and to provide resilience to pests and diseases . Genetic diversity also ensures that forest trees can survive, adapt and evolve under changing environmental conditions. Furthermore, genetic diversity

1900-562: The genus being Pinus yorkshirensis from the Hauterivian - Barremian boundary (~130-125 million years ago) from the Speeton Clay , England. The evolutionary history of the genus Pinus has been complicated by hybridization . Pines are prone to inter-specific breeding. Wind pollination, long life spans, overlapping generations, large population size, and weak reproductive isolation make breeding across species more likely. As

1950-507: The male and female cones on the same tree. The male cones are small, typically 1–5 cm long, and only present for a short period (usually in spring, though autumn in a few pines), falling as soon as they have shed their pollen . The female cones take 1.5–3 years (depending on species) to mature after pollination , with actual fertilization delayed one year. At maturity the female cones are 3–60 cm long. Each cone has numerous spirally arranged scales, with two seeds on each fertile scale;

2000-442: The most important component of the biosphere , and forestry has emerged as a vital applied science , craft , and technology . A practitioner of forestry is known as a forester . Another common term is silviculturist. Silviculture is narrower than forestry, being concerned only with forest plants, but is often used synonymously with forestry. All people depend upon forests and their biodiversity, some more than others. Forestry

2050-520: The next year or so, or after being heated by a forest fire , to release the seeds, opening to 9–18 cm ( 3 + 1 ⁄ 2 –7 in) broad. The seeds are 8–9 millimetres ( 5 ⁄ 16 – 3 ⁄ 8  in) long, with a 40 mm ( 1 + 1 ⁄ 2  in) wing, and are wind- dispersed . Pinus roxburghii is closely related to P. canariensis (Canary Island pine), P. brutia (Turkish pine) and P. pinaster (maritime pine), which all share many features with it. It

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2100-440: The past centuries, forestry was regarded as a separate science. With the rise of ecology and environmental science , there has been a reordering in the applied sciences. In line with this view, forestry is a primary land-use science comparable with agriculture . Under these headings, the fundamentals behind the management of natural forests comes by way of natural ecology. Forests or tree plantations, those whose primary purpose

2150-786: The pines have diversified, gene transfer between different species has created a complex history of genetic relatedness. P. nelsonii P. aristata P. balfouriana P. longaeva P. pinceana P. maximartinezii P. rzedowskii P. quadrifolia P. monophylla P. culminicola P. discolor P. remota P. edulis P. cembroides P. bungeana P. squamata P. gerardiana P. krempfii P. peuce P. lambertiana P. strobus P. chiapensis P. monticola P. flexilis P. strobiformis P. ayacahuite P. albicaulis P. koraiensis P. sibirica P. cembra P. parviflora P. wallichiana Forestry Modern forestry generally embraces

2200-453: The scales at the base and tip of the cone are small and sterile, without seeds. The seeds are mostly small and winged, and are anemophilous (wind-dispersed), but some are larger and have only a vestigial wing, and are bird -dispersed. Female cones are woody and sometimes armed to protect developing seeds from foragers. At maturity, the cones usually open to release the seeds. In some of the bird-dispersed species, for example whitebark pine ,

2250-469: The seeds are only released by the bird breaking the cones open. In others, the seeds are stored in closed cones for many years until an environmental cue triggers the cones to open, releasing the seeds. This is called serotiny . The most common form of serotiny is pyriscence, in which a resin binds the cones shut until melted by a forest fire, for example in P. rigida . The modern English name "pine" derives from Latin pinus , which some have traced to

2300-422: The smaller groups of Pinus are composed of closely related species with recent divergence and history of hybridization. This results in low morphological and genetic differences. This, coupled with low sampling and underdeveloped genetic techniques, has made taxonomy difficult to determine. Recent research using large genetic datasets has clarified these relationships into the groupings we recognize today. Pinus

2350-435: The study of forests and forest ecology, dealing with single tree autecology and natural forest ecology . Dendrology ( Ancient Greek : δένδρον , dendron , "tree"; and Ancient Greek : -λογία , -logia , science of or study of ) or xylology ( Ancient Greek : ξύλον , ksulon , "wood") is the science and study of woody plants ( trees , shrubs , and lianas ), specifically, their taxonomic classifications. There

2400-553: The tallest is an 83.45 m (273.8 ft) tall sugar pine located in Yosemite National Park . Pines are long lived and typically reach ages of 100–1,000 years, some even more. The longest-lived is the Great Basin bristlecone pine ( P. longaeva ). One individual of this species, dubbed " Methuselah ", is one of the world's oldest living organisms at around 4,800 years old. This tree can be found in

2450-482: Was mainly in the tropical domain, where fire burned about 4 percent of the total forest area in that year. More than two-thirds of the total forest area affected was in Africa and South America. Insects, diseases and severe weather events damaged about 40 million hectares of forests in 2015, mainly in the temperate and boreal domains. Furthermore, the marginal populations of many tree species are facing new threats due to

2500-648: Was the New York State College of Forestry , established at Cornell University just a few weeks later, in September 1898. Early 19th century North American foresters went to Germany to study forestry. Some early German foresters also emigrated to North America. In South America the first forestry school was established in Brazil, in Viçosa , Minas Gerais , in 1962, and moved the next year to become

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