文献类型：期刊文献

中文题名：Spatiotemporal variations of actual evapotranspiration over the Lake Selin Co and surrounding small lakes(Tibetan Plateau)during 2003-2012

英文题名：Spatiotemporal variations of actual evapotranspiration over the Lake Selin Co and surrounding small lakes (Tibetan Plateau) during 2003-2012

作者：Zhou, Jing[1];Wang, Lei[1,2];Zhang, YinSheng[1,2];Guo, YanHong[1];He, Dan[3]

第一作者：Zhou, Jing

通讯作者：Zhou, J[1]

机构：[1]Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China;[2]Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;[3]Beijing Union Univ, Coll Arts & Sci, Beijing 100191, Peoples R China

第一机构：Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China

通讯机构：[1]corresponding author), Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China.

年份：2016

卷号：0

期号：12

起止页码：2441-2453

中文期刊名：中国科学：信息科学（英文版）

外文期刊名：SCIENCE CHINA-EARTH SCIENCES

收录：;EI(收录号：20164502974547);Scopus(收录号：2-s2.0-84992727066);WOS:【SCI-EXPANDED(收录号:WOS:000390019500013)】；CSCD:【CSCD2015_2016】；

基金：We thank Ma Ning for sharing the estimated ETa data at the Shenzha station that are calculated by the Nonlinear-CR model with appropriately calibrated parameter values in his publication and Zhang Guoqing for sharing annual boundaries of the Lake Selin Co and surrounding small lakes from 2003 to 2012 extracted in his publication. This study was financially supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB03030300), the National Natural Science Foundation of China (Grant Nos. 41401080, 41322001 & 41190083), and the Hundred Talents Program of Chinese Academy of Sciences (Dr. Wang Lei). The third author (Dr. Zhang Yinsheng) was funded by the National Natural Science Foundation of China (Grant No. 41430748).

语种：英文

中文关键词：Actual evapotranspiration;Lake basins;Tibetan Plateau;Distributed hydrological model;Penman method

外文关键词：Actual evapotranspiration; Lake basins; Tibetan Plateau; Distributed hydrological model; Penman method

摘要：Actual evapotranspiration(ET_a) over the Tibetan Plateau(TP) is an important component of the water cycle,and greatly influences the water budgets of the TP lake basins.Quantitative estimation of ET_a within lake basins is fundamental to physically understanding ET_a changes,and thus will improve the understanding of the hydro logical processes and energy balance throughout the lake basins.In this study,the spatiotemporal dynamic changes of ET_α within the Lake Selin Co(the TP's largest lake) and its surrounding small lakes and land area during 2003-2012 are examined at the basin scale.This was carried out using the well-established Water and Energy Budget-based Distributed Hydrological Model(WEB-DHM) for the land area,the Penman method for the water area when unfrozen,and a simple sublimation estimation approach for the water area when frozen.The relationships between ET_a changes and controlling factors are also discussed.Results indicate that the simulated land ET_a from the WEB-DHM reasonably agrees with the estimated ET_a values from the nonlinear complementary relationship model using appropriately calibrated parameter values at a point scale.Land ET_a displayed a non-significant increase of 7.03 mm year^(-1),and largely depends on precipitation.For the water area,the combined effects of reduced wind speed and net radiation offset the effect of rising temperature and vapor pressure deficit,and contributed to a non-significant decrease in evaporation of 4.17 mm year^(-1).Sensitivity analysis shows that vapor pressure deficit and wind speed are the most sensitive variables to the changes of evaporation from the water area.
Actual evapotranspiration (ET (a) ) over the Tibetan Plateau (TP) is an important component of the water cycle, and greatly influences the water budgets of the TP lake basins. Quantitative estimation of ET (a) within lake basins is fundamental to physically understanding ET (a) changes, and thus will improve the understanding of the hydrological processes and energy balance throughout the lake basins. In this study, the spatiotemporal dynamic changes of ET (a) within the Lake Selin Co (the TP's largest lake) and its surrounding small lakes and land area during 2003-2012 are examined at the basin scale. This was carried out using the well-established Water and Energy Budget-based Distributed Hydrological Model (WEB-DHM) for the land area, the Penman method for the water area when unfrozen, and a simple sublimation estimation approach for the water area when frozen. The relationships between ET (a) changes and controlling factors are also discussed. Results indicate that the simulated land ET (a) from the WEB-DHM reasonably agrees with the estimated ET (a) values from the nonlinear complementary relationship model using appropriately calibrated parameter values at a point scale. Land ET (a) displayed a non-significant increase of 7.03 mm year(-1), and largely depends on precipitation. For the water area, the combined effects of reduced wind speed and net radiation offset the effect of rising temperature and vapor pressure deficit, and contributed to a non-significant decrease in evaporation of 4.17 mm year(-1). Sensitivity analysis shows that vapor pressure deficit and wind speed are the most sensitive variables to the changes of evaporation from the water area.