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| Lake Qinghai | |
|---|---|
| Name | Qinghai Lake |
| Other names | Kokonor |
| Location | Qinghai Province, Tibetan Plateau |
| Coordinates | 36°32′N 100°39′E |
| Type | Endorheic saline lake |
| Inflow | Buha River, Huangshui River, Tongtian River |
| Outflow | None |
| Basin countries | China |
| Area | 4,317 km2 (variable) |
| Max-depth | 32 m |
| Elevation | 3,205 m |
Lake Qinghai is the largest lake in China and a major inland saline lake on the Tibetan Plateau, situated in Qinghai Province near the Golmud–Xining corridor. The lake sits within a high-elevation basin influenced by tectonic, climatic, and hydrological processes that connect to broader features like the Yellow River headwaters, the Kunlun Mountains, and the Qilian Mountains. Its physical and cultural landscapes intersect with historical routes such as the Silk Road and modern infrastructure including the Qinghai–Tibet Railway and provincial highways.
The basin lies at the northeastern margin of the Tibetan Plateau adjacent to the Qaidam Basin and bounded by ranges including the Qilian Mountains and the Amne Machin. The lake’s shoreline and surrounding wetlands fall within administrative units such as Haixi Mongol and Tibetan Autonomous Prefecture, Huangnan Tibetan Autonomous Prefecture, and close to the prefectural seat of Xining. Important nearby towns and transport nodes include Gangcha County, Guide County, and the city of Delingha, all linked by provincial routes and railways such as the Lanxin Railway. The lake’s catchment drains parts of watersheds that connect indirectly to the Yellow River via tributaries like the Buha River and Huangshui River.
Qinghai Lake is an endorheic basin with no outflow, regulated by inflow from rivers including the Buha River, Huangshui River, and seasonal streams flowing from glaciers and snowmelt on ranges like the Qilian Mountains and Kunlun Mountains. The lake’s salinity, surface area, and depth respond to inputs tied to the East Asian Monsoon, regional precipitation patterns measured at stations in Xining and Golmud, and evapotranspiration influenced by high-elevation solar radiation common to the Tibetan Plateau. Hydrological studies by institutions such as Chinese Academy of Sciences and universities in Beijing and Xining monitor fluctuations with satellite missions including Landsat, MODIS, and altimetry from missions like TOPEX/Poseidon.
The lake occupies a structural depression formed by Cenozoic rifting and uplift associated with the ongoing collision of the Indian Plate and the Eurasian Plate, part of the tectonic evolution that produced the Himalayas and the Tibetan Plateau. Sediments in the basin preserve lacustrine records studied by teams from institutions including the Institute of Tibetan Plateau Research and the China Geological Survey. Core samples show cyclic changes tied to Pleistocene glacial–interglacial oscillations and Holocene shifts recorded in proxy archives comparable to records from Lake Baikal, Salawusu River fans, and Loess Plateau deposits.
Regional climate is influenced by the interaction of the East Asian Monsoon, the westerlies, and high-elevation radiative forcing typical of the Tibetan Plateau, with long-term trends detected by climatologists at Peking University and the Chinese Meteorological Administration. Paleoclimate reconstructions from Qinghai basin sediments correlate with records from Greenland ice cores, Antarctic ice cores, and speleothems in Hunan Province, showing shifts in monsoon intensity, aridity, and temperature through the Holocene. Recent trends include retreating glacier mass in source ranges like the Qilian Mountains and lake-level changes paralleled at other inland systems such as Lake Urmia and the Aral Sea, prompting research by the United Nations Environment Programme and national environmental agencies.
The lake and its surrounding wetlands provide habitat for migratory waterbirds on routes connecting to sites such as Poyang Lake and Dhulikhel, hosting species recorded by conservation groups including BirdLife International and monitored under China’s nature reserves. Avian fauna include species comparable to those at Ruoergai Wetlands and Sanjiang Plain sites, and the basin supports steppe and alpine meadow vegetation typical of Qinghai–Tibet Plateau ecosystems. Aquatic and brackish biota are studied in comparison with saline basins like Great Salt Lake and Lake Van; research institutions such as Nanjing University and the South China Botanical Garden examine endemic taxa and migratory corridors protected under national nature reserve designations.
The lake lies within territories historically inhabited by Tibetan, Mongol, and Han communities linked to polities including the Tibetan Empire and later Qing dynasty administrations centered in Xining and Lhasa. Routes around the lake connected trade networks on the Silk Road and pilgrimage paths to temples in Lhasa and monasteries of the Gelug school. Ethnographic and archaeological work by scholars from Peking University, Tsinghua University, and the National Museum of China documents pastoralist practices, salt extraction, and ritual landscapes associated with local Tibetan communities and festivals celebrated at sites near Gangcha County.
Economic activities include salt extraction historically comparable to operations at the Tarim Basin and modern initiatives in fisheries and pasture management involving local governments in Qinghai Province and enterprises registered in Xining. Tourism connects to pilgrimage and nature-based recreation promoted by provincial tourism bureaus and operators offering access from routes like the Qinghai–Tibet Highway and services tied to cities including Xining and Golmud. Conservation and sustainable development programs involve partnerships between organizations such as the Chinese Academy of Sciences, provincial authorities, and international bodies like the World Wildlife Fund to balance infrastructure projects including the Qinghai–Tibet Railway with wetland protection and community livelihoods.
Category:Lakes of China Category:Qinghai