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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
environmental science
Changes in potential evapotranspiration and surface runoff in 1981–2010 and the driving factors in Upper Heihe River Basin in Northwest China
Hydrological Processes, Volume 31, No. 1, Year 2017
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Description
Changes in potential evapotranspiration and surface runoff can have profound implications for hydrological processes in arid and semiarid regions. In this study, we investigated the response of hydrological processes to climate change in Upper Heihe River Basin in Northwest China for the period from 1981 to 2010. We used agronomic, climatic and hydrological data to drive the Soil and Water Assessment Tool model for changes in potential evapotranspiration (ET0) and surface runoff and the driving factors in the study area. The results showed that increasing autumn temperature increased snow melt, resulting in increased surface runoff, especially in September and October. The spatial distribution of annual runoff was different from that of seasonal runoff, with the highest runoff in Yeniugou River, followed by Babaohe River and then the tributaries in the northern of the basin. There was no evaporation paradox at annual and seasonal time scales, and annual ET0 was driven mainly by wind speed. ET0 was driven by relative humidity in spring, sunshine hour duration in autumn and both sunshine hour duration and relative humility in summer. Surface runoff was controlled by temperature in spring and winter and by precipitation in summer (flood season). Although surface runoff increased in autumn with increasing temperature, it depended on rainfall in September and on temperature in October and November. Copyright © 2016 John Wiley & Sons, Ltd.
Authors & Co-Authors
Luo, Kaisheng
China, Beijing
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences
China, Beijing
University of Chinese Academy of Sciences
Tao, Fulu
China, Beijing
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences
Finland, Helsinki
Natural Resources Institute Finland Luke
Deng, Xiangzheng
China, Beijing
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences
Moiwo, Juana Paul
Sierra Leone, Freetown
Njala University
Statistics
Citations: 36
Authors: 4
Affiliations: 4
Identifiers
Doi:
10.1002/hyp.10974
ISSN:
08856087
e-ISSN:
10991085
Research Areas
Environmental