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The evapotranspiration and environmental controls of typical underlying surfaces on the Qinghai-Tibetan Plateau

查看全文 作　　者：JinLei [1]Chen;Jun [2,4]Wen;ShiChang [1,3]Kang;XianHong [2]Meng;XianYu [4]Yang 高影响力作者 机构地区：[1]State Key Laboratory of Cryospheric Science,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,Gansu 730000,China;[2]Key Laboratory of Land Surface Processes and Climate Change,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,Gansu 730000,China;[3]CAS Centre for Excellence in Tibetan Plateau Earth Sciences,Beijing 100101,China;[4]College of Atmospheric Sciences,Chengdu University of Information Technology,Chengdu,Sichuan 610225,China高影响力机构 出　　处：《Research in Cold and Arid Regions》索引2021年第13卷第1期,共9页高影响力期刊 基　　金：This work is financially supported by the National Natural Science Foundation of China(Grant Nos.42005075 and 41530529),the Second Tibetan Plateau Scientific Expedition and Research Program(STEP)(No.2019QZKK0605);the State Key Laboratory of Cryospheric Science(Grant Nos.SKLCS-ZZ-2020 and SKLCS-ZZ-2021);Foundation for Excellent Youth Scholars of'Northwest Institute of Eco-Environment and Resources',CAS(Grant No.FEYS2019020);The authors declare no competing interest in this paper.Our cordial gratitude should be extended to anonymous reviewers and the Editors for their professional and pertinent comments on this manuscript. 摘　　要：To reveal the characteristics of evapotranspiration and environmental control factors of typical underlying surfaces(alpine wetland and alpine meadow)on the Qinghai-Tibetan Plateau,a comprehensive study was performed via in situ observations and remote sensing data in the growing season and non-growing season.Evapotranspiration was positively correlated with precipitation,the decoupling coefficient,and the enhanced vegetation index,but was energy-limited and mainly controlled by the vapor pressure deficit and solar radiation at an annual scale and growing season scale,respectively.Compared with the non-growing season,monthly evapotranspiration,equilibrium evaporation,and decoupling coefficient were greater in the growing season due to lower vegetation resistance and considerable precipitation.However,these factors were restricted in the alpine meadow.The decoupling factor was more sensitive to changes of conductance in the alpine wetland.This study is of great significance for understanding hydro-meteorological processes on the Qinghai-Tibetan Plateau. 关 键 词：EVAPOTRANSPIRATION control factor typical underlying surfaces Qinghai-Tibetan Plateau
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