Climate Change Research ›› 2020, Vol. 16 ›› Issue (5): 600-608.doi: 10.12006/j.issn.1673-1719.2019.243

• Impacts of Climate Change • Previous Articles     Next Articles

Response of water level fluctuation to climate warming and wetting scenarios and its mechanism on Qinghai Lake

LI Lin1,2(), SHEN Hong-Yan2,3,4(), LIU Cai-Hong2,3, XIAO Rui-Xiang1,2   

  1. 1 Meteorological Institute of Qinghai Province, Xi’ning 810001, China
    2 Qinghai Key Laboratory of Disaster Preventing and Reducing, Xi’ning 810001, China
    3 Qinghai Climate Centre, Xi’ning 810001, China
    4 Department of Atmospheric and Sciences, Lanzhou University, Lanzhou 730000, China
  • Received:2019-10-22 Revised:2020-01-08 Online:2020-09-30 Published:2020-09-30
  • Contact: SHEN Hong-Yan;


In the context of water level data of Qinghai Lake, meteorological observational data including temperature, precipitation and evaporation in its basin and climate indexes such as plateau monsoon and westerly circulation from 1961 to 2015, the characteristics of water level fluctuation of Qinghai Lake were analyzed, influence mechanism of plateau monsoon, westerly circulation, vegetation cover, runoff and permafrost degradation on water level fluctuation of lake level were revealed, the quantitative evaluation model on water level changes of Qinghai Lake were established. The water level in Qinghai Lake showed a mutation from descending to rising in 2004 and a continuous rising for 11 years after 2005. The fluctuation of water level had 8 years and 21 years significant periods. Plateau monsoon enhancement and westerly circulation weakening, climate warming and wetting, vegetation restoration, permafrost degradation and runoff increasing, all brought about water level rising continuously after 2005. Quantitative evaluation model based on water balance principle can reflect the influential effect on water level fluctuation caused by precipitation, runoff and evaporation in the previous and current year objectively.

Key words: Qinghai Lake, Climate change, Plateau monsoon, Westerly circulation, Normalized Difference Vegetation Index (NDVI), Glacier, Permafrost

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