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The Tian Shan,Template:NoteTag also known as the Tengri Tagh<ref name="Prichard281">Template:Cite book</ref> or Tengir-Too,<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> meaning the "Mountains of God/Heaven", is a large system of mountain ranges in Central Asia. The highest peak is Jengish Chokusu at Template:Convert high and located in Kyrgyzstan. Its lowest point is at the Turpan Depression, which is Template:Cvt below sea level.<ref name="readersnatural">Template:Cite book</ref>

The Tian Shan is sacred in Tengrism. Its second-highest peak is known as Khan Tengri, which can be translated as "Lord of the Spirits".<ref name="myths">Template:Cite book</ref> At the 2013 Conference on World Heritage, the eastern portion of Tian Shan in western China's Xinjiang Region was listed as a World Heritage Site.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The western portion in Kyrgyzstan, Kazakhstan, and Uzbekistan was then listed in 2016.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

GeographyEdit

The Tian Shan range is located north and west of the Taklamakan Desert and directly north of the Tarim Basin. It straddles the border regions of Kazakhstan, Kyrgyzstan, Uzbekistan and Xinjiang in Northwest China. To the south, it connects with the Pamir Mountains, while to north and east, it meets the Altai Mountains of Mongolia.

The Tian Shan range extends eastwards for approximately 2,900 kilometers from Tashkent, Uzbekistan.<ref name="readersnatural" /> It forms part of the Himalayan orogenic belt, resulting from the collision of the Indian and Eurasian tectonic plates during the Cenozoic era. The range encompasses the Bogda Shan in the east, as defined by both Western and Chinese cartography.

The Tian Shan's highest peak is Jengish Chokusu (also known as Victory Peak), shared by Kyrgyzstan and China. At Template:Convert high, it is the highest point in Kyrgyzstan.<ref name="readersnatural" /> The Tian Shan's second highest peak, Khan Tengri (King Heaven), straddles the Kazakhstan-Kyrgyzstan-China tripoint and at Template:Convert, is the highest point of Kazakhstan. Mountaineers class these as the two northernmost peaks surpassing Template:Convert in the world.

The Torugart Pass, at Template:Convert, marks the border between Kyrgyzstan and Xinjiang. The lower-altitude, forested Alatau ranges in the northern Tian Shan is home to Turkic-speaking pastoral tribes.

The Tian Shan is separated from the Tibetan Plateau by the Taklimakan Desert and the Tarim Basin to the south. The Syr Darya, Ili River and Tarim River that originate in the Tian Shan. The Aksu Canyon is a prominent feature in the mountain range's northwestern section.

Continuous permafrost typically forms in the Tian Shan at elevations above 3,500-3,700 meters. Discontinuous permafrost can be found as low as 2,000 meters in specific locations influenced by unique topographical and climatic conditions, though it generally occurs between 2,700-3,300 meters altitude.<ref>Template:Citation</ref>

The Tian Shan's glaciers are rapidly receding, losing 27% or 5.4 billion tons of ice since 1961— nearly four times the global average of 7%. By 2050, half of the remaining ice is projected to disappear.<ref>Template:Cite news</ref>

Russian explorer Peter Semenov was one of the first Europeans to extensively document the Tian Shan in the 1850s, ultimately changing his family name to refer to the mountains.

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The Tian Shan have a number of named ranges which are often mentioned separately (all distances are approximate):

In China the Tian Shan starts from about Template:Convert east of Ürümqi, north of Kumul City (Hami) with the Qarlik Tagh and the Barkol Mountains. Then the Bogda Shan (god mountains) run from Template:Convert east of Ürümqi. Then there is a low area between Ürümqi and the Turfan Depression. The Borohoro Mountains start just south of Ürümqi and run west-northwest Template:Convert separating Dzungaria from the Ili River basin. Their north end abuts on the Template:Convert Dzungarian Alatau which runs east northeast along Sino-Kazakh border. They start Template:Convert east of Taldykorgan in Kazakhstan and end at the Dzungarian Gate. The Dzungarian Alatau in the north, the Borohoro Mountains in the middle and the Ketmen Ridge in the south make a reversed Z or S, the northeast enclosing part of Dzungaria and the southwest enclosing the upper Ili valley.

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Map of Kyrgyzstan (borders marked in red). The Tian Shan makes up large parts of southern Kyrgyzstan. The indentation on the west is the Fergana Valley
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Map of Tian Shan
File:Karakol Valley.jpg
Tian Shan as viewed from the Karakol valley (Issyk-Kul Region, Kyrgyzstan)
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Snow-capped peaks of the Tian Shan seen from an Issyk Kul Lake beach

In Kyrgyzstan the mainline of the Tian Shan continues as Narat Range from the base of the Borohoros west Template:Convert to the point where China, Kazakhstan, and Kyrgyzstan meet. Here is the highest part of the range – the Central Tian Shan, with Peak Pobeda (Kakshaal Too range) and Khan Tengri. West of this, the Tian Shan split into an 'eye', with Issyk Kul Lake in its center. The south side of the lake is the Terskey Alatau and the north side the Kyungey Ala-Too (shady and sunny Ala-Too). North of the Kyungey Ala-Too and parallel to it is the Trans-Ili Alatau in Kazakhstan just south of Almaty. West of the eye, the range continues Template:Convert as the Kyrgyz Ala-Too, separating Chüy Region from Naryn Region of Kyrgyzstan and then Kazakhstan from the upper valley of the river Talas, the south side of which is the Template:Convert Talas Ala-Too Range ('Ala-too' is a Kyrgyz spelling, while ‘Alatau’ is a Kazakh spelling). At the east end of the Talas Alatau the Suusamyr Too range runs southeast enclosing the Suusamyr Valley or plateau.

As for the area south of the Fergana Valley there is an Template:Convert group of mountains that curves west-southwest from south of Issyk Kul Lake separating the Tarim Basin from the Fergana Valley. The Fergana Range runs northeast towards the Talas Ala-Too and separates the upper Naryn basin from Fergana proper. The southern side of these mountains merge into the Pamirs in Tajikistan (Alay Mountains and Trans-Alay Range). West of this is the Turkestan Range, which continues almost to Samarkand.

Ice AgeEdit

The Tian Shan plateau, stretching 100 to 120 km wide, is located on the northern margin of the Tarim basin between the Kokshaal-Tau mountain chain to the south and the Terskey Alatau mountain chain to the north. The Kokshaal-Tau extends for 570 km from Pik Dankowa in the west to Pik Pobeda in the east-northeast. This mountain chain, along with the parallel Terskey Alatau and the Tian Shan plateau in between, were covered by connected ice-stream-networks and a plateau glacier during glacial times. The only remaining interglacial remnant of this glaciation is the 61 km long South Inylschek glacier. The outlet glacier tongues of the plateau glacier flowed northward down to Lake Issyk Kul, calving in this 160 km long lake.

Similarly, strong glaciation was present in the high mountain area of the Kungey Alatau, which stretches for 230 km north of Issyk Kul and connects to the mountain foreland near Alma Ata. The glacial glaciers from the Kungey Alatau also calved into Lake Issyk Kul, with the Ak-Sai valley glacier developing a mountain foreland glacier.<ref name="meteorological1994" /><ref>Template:Cite book</ref><ref name="autogenerated175" /> The Chon-Kemin valley was glaciated up to its inflow into the Chu valley.<ref name="meteorological1994">Template:Cite book</ref><ref>Template:Cite journal</ref><ref name="autogenerated175">Template:Cite book</ref>

Altogether, the glacial Tian Shan glaciation occupied an area of approximately 118,000 square kilometers. The glacier snowline was about 1200m lower during the last ice age than it is today. This would result in a depression of the average annual temperature of 7.2 to 8.4 °C for the Last Glacial Maximum compared with today, assuming a comparable precipitation ratio.<ref name="meteorological1994"/>

EcologyEdit

The Tian Shan holds important forests of Schrenk's spruce (Picea schrenkiana) at altitudes of over Template:Convert; the lower slopes have unique natural forests of wild walnuts and apples.<ref>Template:Cite news</ref>

The Tian Shan in its immediate geological past was kept from glaciation due to the "protecting" warm influence of the Indian Ocean monsoon climate. This defined its ecological features which could sustain its distinctive ecosphere. The mountains were subjected to constant geological changes with constantly evolving drainage systems which affected the patterns of vegetation, as well as exposing fertile soil for newly emerging seedlings to thrive in.

Tulips originated in the Tian Shan Mountains. The plant then made its way to Turkey via the Silk Road and became a symbol of the Ottoman Empire.<ref>Great Courses: 'The Botanist's Eye'(DVD 2 chapter 7) by Catherine Kleier, PhD from California Polytechnic State University.</ref>

Ancestors of important crop vegetation were established and thrived in the area, among them: apricots (Prunus armeniaca), pears (Pyrus spp.), pomegranates (Punica granatum), figs (Ficus), cherries (Prunus avium) and mulberries (Morus). The Tian Shan region also included important animals like bears, deer, and wild boar, which helped to spread seeds and expand ecological diversity.

Among the vegetation colonizing the Tian Shan came, likely via birds from the east, the ancestors of what we know as the "sweet" apple. The fruit probably then looked like a tiny, long-stalked, bitter apple something like Malus baccata, the Siberian crab. The pips may have been carried in a bird's crop or clotted onto feet or feathers.

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The strain of Y. pestis which caused the bubonic plague now know as the Black Death may have originated in the Tian Shan, spreading along the Silk Road and killing half of Europe's population in the mid 1300s.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

ClimateEdit

Tian Shan has an alpine climate (Köppen climate classification ETH).

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ReligionEdit

TengrismEdit

In Tengrism, Khan Tengri, is the lord of all spirits and the religion's supreme deity, and it is the name given to the second highest peak of Tian Shan.<ref name="myths"/>

NameEdit

One of the earliest historical references to these mountains may be related to the Xiongnu word Qilian (Template:Lang-zh), which, according to Tang commentator Yan Shigu, is the Xiongnu word for "sky" or "heaven".<ref>Template:Cite book</ref> Sima Qian, in the Records of the Grand Historian, mentioned Qilian in relation to the homeland of the Yuezhi, and the term is believed to refer to the Tian Shan rather than the range Template:Convert further east now known as the Qilian Mountains.<ref>Template:Citation</ref><ref>Template:Cite book</ref> The name of the Otgontenger in Mongolia has the same meaning.

See alsoEdit

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NotesEdit

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ReferencesEdit

CitationsEdit

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SourcesEdit

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  • The Contemporary Atlas of China. 1988. London: Marshall Editions Ltd. Reprint 1989. Sydney, NSW: Collins Publishers Australia.
  • The Times Comprehensive Atlas of the World. Eleventh Edition. 2003. London, England: Times Books Group Ltd.

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External linksEdit

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