Variations in evaporation from water surfaces along the margins of the Badain Jaran Desert over nearly 60 years and influencing factors  

作　　者：Li-juan Wang Zhe Wang Gao-lei Jiang Zhen-long Nie Jian-mei Shen Sheng-hua Song 

机构地区：[1]Insttute of Hydrogeology and Environmental Gelogy,Chinese Academy of Geological Sciences,Shijiazhuang 05006,China [2]Technology innovation Center for Geothermal and Hot Dry Rock Exploration and Development,Ministry of Natural Resources,Shjiazhuang 050061,China [3]Key Laboratoryof Quaternary Chronology and Hydrological Environmental Evolution,China Geological Survey,Shjiazhuang 0006 China

出　　处：《Journal of Groundwater Science and Engineering》2024年第3期253-263,共11页地下水科学与工程（英文版）

基　　金：supported by the Natural Science Foundation of Hebei Province(D202450411);the Basic Research Programme of Chinese Academy of Geological Sciences(CAGS)(YK202302).

摘　　要：Based on meteorological data collected over nearly 60 years(1960-2017)from four national meteorological stations along the margins of the Badain Jaran Desert,this study analyzed the spatiotemporal variations in evaporation from water surfaces and identified the dominant controlling factors.Methods used included linear trend analysis,linear tendency estimation,the departure method,the rank correlation coefficient-based method,and Multiple Linear Regression(MLR).Results indicate notable spatiotemporal differences in evaporation distribution and evolution.Spatially,average annual evaporation exhibited a pronounced altitude effect,decreasing at a rate of about 8.23 mm/m from east to west with increasing altitude.Temporally,annual evaporation showed significant upward trends after 1996 at the northeastern(Guaizi Lake)and western(Dingxin)margins,with rates of 132 mm/10a and 105 mm/10a,respectively.Conversely,along the northwestern(Ejina Banner)and southern(Alxa Right Banner)margins of the desert,an evaporation paradox was observed,with annual evaporation trending downward at rates of 162 mm/10a and 187 mm/10a,respectively,especially after 1987.The dominant factors controlling evaporation varied spatially:Average annual temperature and relative humidity influended the western margin(Dingxin),average annual temperature was the key factor for the northeastern margin(Guaizi Lake),and average wind speed was crucial for the northern(Ejina Banner)and southern(Alxa Right Banner)margins.

关 键 词：Evaporation from water surface Evaporation paradox Dominant controlling factor Variation trend 

分 类 号：P426.2[天文地球—大气科学及气象学]