首页|Unveiling evapotranspiration patterns and energy balance in a subalpine forest of the Qinghai-Tibet Plateau:observations and analysis from an eddy covariance system
Unveiling evapotranspiration patterns and energy balance in a subalpine forest of the Qinghai-Tibet Plateau:observations and analysis from an eddy covariance system
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Evapotranspiration is an important parameter used to characterize the water cycle of ecosystems.To under-stand the properties of the evapotranspiration and energy balance of a subalpine forest in the southeastern Qinghai-Tibet Plateau,an open-path eddy covariance system was set up to monitor the forest from November 2020 to October 2021 in a core area of the Three Parallel Rivers in the Qing-hai-Tibet Plateau.The results show that the evapotranspira-tion peaked daily,the maximum occurring between 11:00 and 15:00.Environmental factors had significant effects on evapotranspiration,among them,net radiation the greatest(R2=0.487),and relative humidity the least(R2=0.001).The energy flux varied considerably in different seasons and sensible heat flux accounted for the main part of turbulent energy.The energy balance ratio in the dormant season was less than that in the growing season,and there is an energy imbalance at the site on an annual time scale.
Niu Zhu、Jinniu Wang、Dongliang Luo、Xufeng Wang、Cheng Shen、Ning Wu、Ning Zhang、Binghui Tian、Aihong Gai
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Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041,People's Republic of China
College of Resources and Environmental Sciences,Gansu Agricultural University,Lanzhou 730070,People's Republic of China
Mangkang Ecological Monitoring Station,Tibet Ecological Security Barrier Ecological Monitoring Network,Qamdo 854500,People's Republic of China
Northwest Institute of Eco Environmental Resources,Chinese Academy of Sciences,Lanzhou 730000,People's Republic of China
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CAS"Light of West China"ProgramNational Natural Science Foundation of ChinaState Key Laboratory of Cryospheric Science,Northwest Institute of Eco-Environment and Resources,Chinese Academy Sciences
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