A wild yak survey in Changtang of Tibet Autonomous Region and Hoh Xil of Qinghai Province
(2.Institute of Zoology, Chinese Academy of Sciences, Beijing 100101)
(3.University of Chinese Academy of Sciences, Beijing 100049)
(4.Forestry Inventory and Planning Institute of the Tibet Autonomous Region, Lhasa 850000)
(5.Guangzhou Yilin Ecological Monitoring Limited Company, Guangzhou 510075)
(6.Research Institute of Forest Ecology Environment and Protection, Chinese Academy of Forestry, Beijing 100091)
【Abstract】The wild yak (Bos grunniens), which is endemic to the Qinghai-Tibet Plateau, mainly distributed in Changtang region of Tibet, Hoh Xil and Sanjiangyuan regions of Qinghai and Altun Mountains of Xinjiang. In this study, we used field data and data from the published literatures to estimate the population of wild yaks as well as their distribution in the Qinghai-Tibet Plateau and the adjacent areas in China. Field surveys were conducted in Changtang of Tibet, Hoh Xil of Qinghai between 2012 and 2014. According to our field survey, there were 11,222–21,072 wild yaks in Changtang of Tibet, and 659–1,793 in Hoh Xil of Qinghai. Although our results indicate that the population of wild yak has increased since 1990s and the distribution area of wild yak is shrinking. With the changing of the global climate and the intensifying of human activities on the Qinghai-Tibet Plateau, actions should be strengthened to protect the endemic species in this area.
【Keywords】 Bos grunniens; Qinghai-Tibet Plateau; population; distribution; conservation;
(Translated by ZHAO B)
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