During the
Han dynasty (206 BCE – 220 CE), substantial numbers of
Han Chinese lived in the
Xining valley to the east. In the 17th century,
Mongolic-speaking
Oirat and
Khalkha tribals migrated to Qinghai and became known as
Qinghai Mongols. In 1724, the Qinghai Mongols led by 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. During
Nationalist rule (1928–1949), the Han formed a majority of Qinghai Province's residents, although Chinese Muslims (
Hui) dominated the government. The
Kuomintang Hui general
Ma Bufang, having invited Kazakh Muslims, 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. After the
1949 Chinese revolution, refugees from the 1950s
Anti-Rightist Movement settled in the area west of Qinghai Lake. Surface area decreased 11.7% in the period from 1908 to 2000. 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
Gahai Lake (尕海,
Gǎhǎi) appeared in the north;
Shadao Lake (沙岛,
Shādǎo), covering an area of to the northeast, followed in the 1980s, along with
Haiyan Lake (海晏,
Hǎiyàn) of . Another 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 over the last three decades. ==Wildlife==