Transhimalayas
   HOME

TheInfoList



OR:

The Trans himalaya (also spelled Trans-Himalaya), or "Gangdise – Nyenchen Tanglha range" ( zh, s=冈底斯-念青唐古拉山脉, p=Gāngdǐsī-Niànqīngtánggǔlā Shānmài), is a mountain range in
China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
,
India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
and
Nepal Nepal, officially the Federal Democratic Republic of Nepal, is a landlocked country in South Asia. It is mainly situated in the Himalayas, but also includes parts of the Indo-Gangetic Plain. It borders the Tibet Autonomous Region of China Ch ...
, extending in a west–east direction parallel to the main
Himalaya The Himalayas, or Himalaya ( ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the Earth's highest peaks, including the highest, Mount Everest. More than 100 pea ...
n range. Located north of Yarlung Tsangpo river on the southern edge of the
Tibetan Plateau The Tibetan Plateau, also known as the Qinghai–Tibet Plateau or Qingzang Plateau, is a vast elevated plateau located at the intersection of Central Asia, Central, South Asia, South, and East Asia. Geographically, it is located to the north of H ...
, the Transhimalaya is composed of the Gangdise range to the west and the Nyenchen Tanglha range to the east. The name ''Transhimalaya'' was introduced by the Swedish geographer Sven Hedin in early 20th century. The Transhimalaya was described by the ''Columbia Lippincott Gazetteer'' in 1952 as an "ill-defined mountain area" with "no marked crest line or central alignment and no division by rivers." On more-modern maps the Kailas Range (Gangdise or Kang-to-sé Shan) in the west is shown as distinct from the Nyenchen Tanglha range in the east.


Geology

The Transhimalayas are geologically distinct from the other Himalayan ranges. They were probably formed by subduction of sediments from the collision of the Indian and Eurasian plates. A consensus of different dating methods suggests that the older parts of this range formed in the upper
Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...
(82-113 Mya), while the younger regions formed in the
Eocene The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes ...
(40-60 Mya).


Climate

The Transhimalays generally have a cold, arid montane climate. For example, the Spiti region of
Himachal Pradesh Himachal Pradesh (; Sanskrit: ''himācāl prādes;'' "Snow-laden Mountain Province") is a States and union territories of India, state in the northern part of India. Situated in the Western Himalayas, it is one of the thirteen Indian Himalayan ...
, India, has an annual rainfall of about 170 mm. However, studies in Mustang District, Nepal, indicate that climate change is warming the Transhimalayas at a rate of about 0.13 degrees a year.


Biodiversity

The Transhimalayas generally have low species diversity (and vegetation cover) and are classified as dry alpine steppes. However, a study in the Spiti region found 23 medicinal plants. Previous surveys in this region had found a total of over 800 species of
vascular plants Vascular plants (), also called tracheophytes (, ) or collectively tracheophyta (; ), are plants that have lignified tissues (the xylem) for conducting water and minerals throughout the plant. They also have a specialized non-lignified tissue ( ...
. The Transhimalayas are home to the once endangered
snow leopard The snow leopard (''Panthera uncia'') is a species of large cat in the genus ''Panthera'' of the family Felidae. The species is native to the mountain ranges of Central and South Asia. It is listed as Vulnerable on the IUCN Red List because ...
, the
Eurasian lynx The Eurasian lynx (''Lynx lynx'') is one of the four wikt:extant, extant species within the medium-sized wild Felidae, cat genus ''Lynx''. It is widely distributed from Northern Europe, Northern, Central Europe, Central and Eastern Europe to Cent ...
, Tibetan wolf,
red fox The red fox (''Vulpes vulpes'') is the largest of the true foxes and one of the most widely distributed members of the order Carnivora, being present across the entire Northern Hemisphere including most of North America, Europe and Asia, plus ...
and Tibetan fox. Native herbivores include the
argali The argali (''Ovis ammon''), also known as the mountain sheep, is a wild ovis, sheep native to the highlands of western East Asia, the Himalayas, Tibet, and the Altai Mountains. Description The name 'argali' is the Mongolian language, Mongolian ...
, Tibetan gazelle, urial, wild ass or ''
kiang The kiang (''Equus kiang'') is the largest of the ''Asinus'' subgenus. It is native to the Tibetan Plateau in Ladakh India, northern Pakistan, Tajikistan, China and northern Nepal. It inhabits montane grasslands and shrublands. Other common nam ...
'', Asiatic ibex, yak and
bharal The bharal (''Pseudois nayaur''), also called the blue sheep, is a Caprinae, caprine native to the high Himalayas. It is the monotypic taxon, only member of the genus ''Pseudois.'' It occurs in Pakistan, India, Nepal, Bhutan, Myanmar, and in Ch ...
.


Conflict and conservation

The Tibetan wolf, snow leopard and lynx are major predators of livestock in the
Ladakh Ladakh () is a region administered by India as a union territory and constitutes an eastern portion of the larger Kashmir region that has been the subject of a Kashmir#Kashmir dispute, dispute between India and Pakistan since 1947 and India an ...
region of India. Goats, sheep, yak and horses were their most common prey. In Mustang, Nepal, rising temperatures and declining snowfall are reducing the area available for agriculture, forcing villagers to relocate and reducing grassland and forest cover. This has also led to bharal shifting to lower elevations, where they raid crops. In turn, this attracts snow leopards to human settlements, where they prey on livestock. On the other hand, many wild herbivores are out-competed and displaced by livestock. A historical analysis suggests that the Transhimalayas have lost four wild herbivores over the last millennium or so of human habitation. Many parts of the Transhimalayas are now conserved. These include the Kangrinboqê National Forest Park in China, the Pin Valley National Park (675 km2.) and Kibber Wildlife Sanctuary (1400 km2.) in India and parts of the
Annapurna Conservation Area Annapurna Conservation Area is Nepal's largest protected area covering in the Annapurna range of the Himalayas. It ranges in elevation from to the peak of Annapurna I at . The conservation area stretches across Manang District, Nepal, Manang, Mu ...
(7,629 km2.) in Nepal. In addition to protecting species diversity, restoration of the native Transhimalayan grasslands has also been found to trap more carbon in the soil, mitigating climate change.


See also

* Geology of the Himalaya * Indus Suture Zone * Transhimalaya, includes the following two ** Lhasa terrane ** Karakoram fault system * Bangong-Nujiang Suture Zone * Qiangtang terrane


References


Citations


Sources

* * {{Clear Mountain ranges of the Himalayas Mountain ranges of Myanmar Mountain ranges of Tibet Mountain ranges of Sichuan