Qinghai Lake

Template:Short description {{#invoke:Hatnote|hatnote}} Template:Infobox body of water Qinghai Lake is the largest lake in China. Located in an endorheic basin in Qinghai Province, to which it gave its name, Qinghai Lake is classified as an alkaline salt lake. The lake has fluctuated in size, shrinking over much of the 20th century but increasing since 2004. It had a surface area of Template:Convert, an average depth of Template:Convert, and a maximum depth of Template:Convert in 2008.

Template:Anchor

NamesEdit

Template:Infobox Chinese Template:Infobox Chinese Qinghai is the atonal pinyin romanisation of the Mandarin pronunciation of the Chinese name Template:Nowrap Although modern Chinese distinguishes between the colors blue and green, this distinction did not exist in classical Chinese. The color {{#invoke:Lang|lang}} (qīng) was a "single" color inclusive of both blue and green as separate shades.Template:Sfnp The name is thus variously translated as "Blue Sea",Template:Sfnp "Green Sea",<ref>Template:Citation.</ref> "Blue-Green Sea",Template:Sfnp "Blue/Green Sea",Template:Sfnp etc. For a time after its wars with the Xiongnu, Han China connected the lake with the legendary "Western Sea" assumed to balance the East China Sea, but as the Han Empire expanded further west into the Tarim Basin other lakes assumed the title.<ref name="Harris"/> The former names Chinghai, Ch'ing-hai, or Ch'inghai Lake are based on the Wade–Giles romanisation of the same Chinese name.Template:Sfnp

Qinghai Lake is also known as Template:Nowrap Template:Sfnp from its Classical Mongolian name {{#invoke:Lang|lang}}. The modern Mongolian form of the same name is Template:Translit ({{#invoke:Lang|lang}}). Similar to Chinese, Classical Mongolian used {{#invoke:Lang|lang}} inclusive of both the color of the sky and fresh grass,<ref>Template:Citation.</ref> but now uses {{#invoke:Lang|lang}} specifically for deep or dark blue distinguished both from light blue ({{#invoke:Lang|lang}}, Template:Translit) and green ({{#invoke:Lang|lang}}, Template:Translit). Classical Mongolian also did not distinguish between lakes and larger bodies of water. The Chinese name, using "sea" rather than "lake," is thus an overly literal calque of this name,Template:Sfnp Template:Sfnp used by the Upper Mongols, some of whom made up the local ruling class during the standardization of western Chinese toponyms in the Qing dynasty.Template:Sfnp Similar use of the Chinese word for "sea" to translate Mongolian lake toponyms can be seen elsewhere around Qinghai, as with Lake Heihai ("Black Sea") in the Kunlun Mountains.

The Tibetans also separately calqued the name as Template:Translit or Template:Translit ({{#invoke:Lang|lang}}, "Blue Lake or Sea").

GeographyEdit

Qinghai Lake lies about Template:Convert west of Xining in a hollow of the Tibetan Plateau at Template:Convert above sea level.<ref>Buffetrille 1994, p. 2; Gruschke 2001, pp. 90 ff.</ref> It lies between Haibei Tibetan Autonomous Prefecture and Hainan Tibetan Autonomous Prefecture in northeastern Qinghai in Northwest China. The lake has fluctuated in size, shrinking over much of the 20th century but increasing since 2004. It had a surface area of Template:Convert, an average depth of Template:Convert, and a maximum depth of Template:Convert in 2008.<ref>Template:Cite journal</ref>

Twenty-three rivers and streams empty into Qinghai Lake, most of them seasonal. Five permanent streams provide 80% of the total influx.<ref name="Rhode">Template:Cite journal</ref> The relatively low inflow and high evaporation rates have turned Qinghai saline and alkaline; the salt concentration is presently about 1.4% by weight (seawater has a salt concentration of about 3.5%), with a pH of 9.3.<ref name=Zhang2015/> It has increased in salinity and basicity since the early Holocene.<ref name="Zhang2015" />

At the tip of the peninsula on the western side of the lake are Cormorant Island and Egg Island, collectively known as the Bird Islands.

Qinghai Lake became isolated from the Yellow River about 150,000 years ago.<ref name=Zhang2015/> If the water level were to rise by approximately Template:Convert, the connection to the Yellow River would be reestablished via the low pass to the east.Template:Citation needed

18,000 years ago, just after the end of the Last Glacial Maximum, the lake level of Lake Qinghai was around 30 metres lower than today. Between 15,600 and 10,700 years ago, lake levels secularly increased to around 10 metres lower than the present lake level, after which they declined slightly until around 9,200 years ago, when they began to rise again. Around 5,900 years ago, lake levels reached a peak of a few metres higher than today, before declining again amidst a regional cooling and drying trend until 1,400 years ago, when they were less than 10 metres lower than average modern levels. They then began to rise once more until reaching their present level.<ref>Template:Cite journal</ref>

ClimateEdit

The area around Qinghai Lake has a dry-winter subalpine climate (Köppen Dwc), typical of large areas of Tibet. Winters are frigid but extremely dry, so that the lake often remains frozen for three months continuously,<ref name=IBST/> whilst summers feature pleasant afternoons, generally cold mornings, and frequent showers.

Template:Weather box

HistoryEdit

File:Txu-pclmaps-oclc-22834566 g-8b.jpg

Map including Qinghai Lake

During the Han dynasty (206 BCE – 220 CE), substantial numbers of Han Chinese lived in the Xining valley to the east.<ref name="Harris">Template:Harvp.</ref> In the 17th century, Mongolic-speaking Oirat and Khalkha tribals migrated to Qinghai and became known as Qinghai Mongols.<ref>Template:Harvp.</ref> In 1724, the Qinghai Mongols led by Template:ILL revolted against the Qing dynasty. The Yongzheng Emperor, after putting down the rebellion, stripped away Qinghai's autonomy and imposed direct rule. Although some Tibetans lived around the lake, the Qing maintained an administrative division from the time of Güshi Khan between the Dalai Lama's western realm (slightly smaller than the current Tibet Autonomous Region) and the Tibetan-inhabited areas in the east. Yongzheng also sent Manchu and Han settlers to dilute the Mongols.Template:Sfnp

During Nationalist rule (1928–1949), the Han formed a majority of Qinghai Province's residents, although Chinese Muslims (Hui) dominated the government.Template:Sfnp The Kuomintang Hui general Ma Bufang, having invited Kazakh Muslims,<ref>Template:Cite book</ref> joined the governor of Qinghai and other high ranking Qinghai and national government officials in conducting a joint Kokonuur Lake Ceremony to worship the God of the Lake. During the ritual, the Chinese national anthem was sung and all participants bowed to a Portrait of Kuomintang founder Sun Yat-sen as well as to the God of the Lake. Participants, both Han and Muslim, made offerings to the god.<ref>Template:Harvp.</ref>

File:Qinghai Lake 2016.jpg

View of Qinghai Lake, 2016

After the 1949 Chinese revolution, refugees from the 1950s Anti-Rightist Movement settled in the area west of Qinghai Lake.<ref name="Harris"/> After the Chinese economic reform in the 1980s, drawn by new business opportunities, migration to the area increased, causing ecological stresses. Fresh grass production in Gangcha County north of the lake declined from a mean of Template:Convert to Template:Convert in 1987. In 2001, the State Forestry Administration of China launched the "Retire Cropland, Restore Grasslands" ({{#invoke:Lang|lang}}) campaign and started confiscating Tibetan and Mongol pastoralists' guns to preserve the endangered Przewalski's gazelle.<ref name="Harris"/>

Prior to the 1960s, 108 freshwater rivers emptied into the lake. As of 2003, 85% of the river mouths have dried up, including the lake's largest tributary, the Buha River. In between 1959 and 1982, there had been an annual water level drop of Template:Convert, which was reversed at a rate of Template:Convert between 1983 and 1989, but has continued to drop since. The Chinese Academy of Sciences reported in 1998 the lake was again threatened with loss of surface area due to livestock over-grazing, land reclamations, and natural causes.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Surface area decreased 11.7% in the period from 1908 to 2000.<ref>People's Daily. Template:Webarchive</ref> During that period, higher lake floor areas were exposed and numerous water bodies separated from the rest of the main lake. In the 1960s, the Template:Convert Gahai Lake (尕海, Gǎhǎi) appeared in the north; Shadao Lake (沙岛, Shādǎo), covering an area of Template:Convert to the northeast, followed in the 1980s, along with Haiyan Lake (海晏, Hǎiyàn) of Template:Convert.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Another Template:Convert daughter lake split off in 2004. In addition, the lake has now split into half a dozen more small lakes at the border. Qinghai Provincial Remote Sensing Center, attributed the separation of Qinghai Lake to shrinkage of the water surface as a result of a lowered water level and desertification in the region. The water surface has shrunk by Template:Convert over the last three decades.<ref>Qinghai Lake splits due to deterioration. Chinadaily.com.cn (2004-02-24). Retrieved on 2010-09-27.</ref>

WildlifeEdit

File:Bird Island, Qinghai Lake.jpg

A bird island

The lake is located at the crossroads of several bird migration routes across Asia. Many species use Qinghai as an intermediate stop during migration. As such, it is a focal point in global concerns regarding avian influenza (H5N1), as a major outbreak here could spread the virus across Europe and Asia, further increasing the chances of a pandemic. Minor outbreaks of H5N1 have already been identified at the lake. The Bird Islands have been sanctuaries of the Qinghai Lake Natural Protection Zone since 1997.Template:Citation needed

There are five native fish species: The edible naked carp (Gymnocypris przewalskii, Template:Zh),Template:Sfnp which is the most abundant in the lake, and four stoneloaches (Triplophysa stolickai, T. dorsonotata, T. scleroptera and T. siluroides).<ref name=Zhang2015>Template:Harvp.</ref> Other Yellow River fish species occurred in the lake, but they disappeared with the increasing salinity and basicity, beginning in the early Holocene.<ref name=Zhang2015/>

CultureEdit

There is an island in the western part of the lake with a temple and a few hermitages called "Mahādeva, the Heart of the Lake", "mTsho snying Ma hā de wa" in Tibetan, which historically was home to a Buddhist monastery. The temple was also used for religious purposes and ceremonies.Template:Sfnp No boat was used during summer, so monks and pilgrims traveled to and from only when the lake froze over in winter. A nomad described the size of the island by saying that: "if in the morning a she-goat starts to browse the grass around it clockwise and its kid anti-clockwise, they will meet only in the night, which shows how big the island is."Template:Sfnp It is also known as the place to which Gushri Khan and other Khoshut Mongols migrated during the 1620s.Template:Sfnp

The lake is currently circumnavigated by pilgrims, mainly Tibetan Buddhists, especially every Horse Year of the 12-year cycle. Nikolay Przhevalsky estimated it would take about eight days by horse or 15 walking to circumambulate the lake, but pilgrims report it takes about 18 days on horseback, and one took 23 days walking to complete the circuit.Template:Sfnp