globalchange  > 气候变化与战略
DOI: 10.1016/j.jenvman.2020.110310
Revealing the spatio-temporal variability of evapotranspiration and its components based on an improved Shuttleworth-Wallace model in the Yellow River Basin
Author: Jiang Z.-Y.; Yang Z.-G.; Zhang S.-Y.; Liao C.-M.; Hu Z.-M.; Cao R.-C.; Wu H.-W.
Source Publication: Journal of Environmental Management
ISSN: 3014797
Publishing Year: 2020
Volume: 262
Language: 英语
Keyword: Evapotranspiration partition ; NDVI ; Shuttleworth-wallace model ; Yellow river basin
Scopus Keyword: agricultural modeling ; biogeochemistry ; environmental factor ; evapotranspiration ; NDVI ; spatial variation ; temporal variation ; trend analysis ; article ; environmental factor ; evapotranspiration ; river basin ; vegetation ; water management ; China ; Yellow River Basin
English Abstract: Identifying the spatio-temporal variations of evapotranspiration (ET) from its components (soil evaporation and plant transpiration) can greatly improve our understanding of water-cycle and biogeochemical processes. However, partitioning evapotranspiration into evaporation (E) and transpiration (T) at regional scale with high accuracy still remains a challenge. This study has aimed to reveal the spatio-temporal variations of evapotranspiration and its components by using an improved Shuttleworth-Wallace (SWH) model to partition ET in the Yellow River Basin during 1981–2010. The environmental factors affecting the spatial and temporal variations of evapotranspiration and its components were also assessed. Results showed that the mean annual ET, T and E in the Yellow River Basin were 372.18 mm, 179.64 mm, and 192.54 mm, respectively, over the last 30 years. The spatial pattern of mean annual ET and T displayed a decreasing trend from southeast to northwest in the Yellow River Basin, and the temporal variation showed a significant increasing trend with rates of 1.72 mm yr−1 and 1.54 mm yr−1, respectively. It meant that T accounted for the variations of ET, while E showed no significant changes in recent decades. Moreover, the normalized differential vegetation index (NDVI) and temperature were identified as the main factors controlling the variations of ET and T in the Yellow River Basin. Among them, the area with NDVI as the dominant factor for ET and T could reach 63.82% and 78.47% of the whole basin respectively. However, the variations of E were affected by complex factors, and evaporation in the western alpine region was mainly controlled by temperature. Our findings are expected to not only have implications for developing sustainable policies of water management and ecological restoration in this region, but also provide valuable insight in methodology of ET partitioning in regional or global scale. © 2020 Elsevier Ltd
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被引频次[WOS]:1   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Appears in Collections:气候变化与战略

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Affiliation: School of Geography, South China Normal University, Guangzhou, 510631, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, China; Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou, 510650, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou, 510650, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, 519082, China; Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing, 210008, China

Recommended Citation:
Jiang Z.-Y.,Yang Z.-G.,Zhang S.-Y.,et al. Revealing the spatio-temporal variability of evapotranspiration and its components based on an improved Shuttleworth-Wallace model in the Yellow River Basin[J]. Journal of Environmental Management,2020-01-01,262
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