Spatiotemporal Patterns of Terrestrial Evapotranspiration in Response to Climate and Vegetation Coverage Changes across the Chinese Loess Plateau
Zheng, Han1,2; Lin, Henry3; Zhu, Xianjin4
通讯作者Zheng, Han(zhenghan@chd.edu.cn) ; Lin, Henry(henrylin@psu.edu)
2019-08-01
发表期刊WATER
卷号11期号:8页码:16
摘要Spatiotemporal patterns of evapotranspiration (ET) and its controlling factors are important for ecosystem services and water resources management in the Chinese Loess Plateau (CLP). In this study, we assessed the spatial patterns of ET and then investigated the interannual variability of ET and its relationships with climate variability and vegetation coverage changes at the timescales of annual, active growing season, as well as different seasons across the entire CLP from 2000 to 2014. A MODIS-derived ET dataset, ground-based datasets of precipitation and atmospheric evaporative demand (AED), and a remote-sensing dataset of Normalized Difference Vegetation Index (NDVI) were comprehensively analyzed. Results showed that mean annual ET varied distinctly among different vegetation zones, generally higher in the more humid southeastern parts of the CLP. Summer ET and ET over active growing season significantly increased for more than 40% of the entire CLP area, and winter ET significantly decreased over similar to 70% of the entire CLP region, while annual ET, spring ET, and autumn ET remained quite stable during 2000-2014. Per-pixel interannual variability of ET was mainly positively correlated with that of precipitation and NDVI except for winter, but negatively correlated with AED trends. Our study also demonstrated that ET variation trends were exactly consistent for the entire CLP region, the areas mainly implemented with the Grain for Green (GFG) project, and other CLP areas not implemented with the GFG project during 2000-2014. Our findings suggest that the spatiotemporal patterns of CLP ET were mainly water-limited, and climate variability played an essential role in shaping the interannual variability of ET in the CLP. This study will improve our understanding on the ET variations over water-limited areas under climate and vegetation coverage changes.
关键词evapotranspiration climate change vegetation coverage change interannual variability Chinese Loess Plateau
DOI10.3390/w11081625
关键词[WOS]WATER-USE EFFICIENCY ; CARBON-DIOXIDE ; SOIL-MOISTURE ; ECOSYSTEMS ; REVEGETATION ; EVAPORATION ; YIELD ; MODIS
收录类别SCI ; SCI
语种英语
资助项目National Natural Science Foundation of China[31700414] ; National Natural Science Foundation of China[31500390] ; National Natural Science Foundation of China[41790444] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19020302]
WOS研究方向Water Resources
项目资助者National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS类目Water Resources
WOS记录号WOS:000484561500099
出版者MDPI
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/13464
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Zheng, Han; Lin, Henry
作者单位1.Changan Univ, Sch Environm Sci & Engn, Minist Educ, Key Lab Subsurface Hydrol & Ecol Effect Arid Reg, Xian 710054, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, CAS Ctr Excellence Quaternary Sci & Global Change, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
3.Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA 16802 USA
4.Shenyang Agr Univ, Coll Agron, Shenyang 110161, Liaoning, Peoples R China
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Zheng, Han,Lin, Henry,Zhu, Xianjin. Spatiotemporal Patterns of Terrestrial Evapotranspiration in Response to Climate and Vegetation Coverage Changes across the Chinese Loess Plateau[J]. WATER,2019,11(8):16.
APA Zheng, Han,Lin, Henry,&Zhu, Xianjin.(2019).Spatiotemporal Patterns of Terrestrial Evapotranspiration in Response to Climate and Vegetation Coverage Changes across the Chinese Loess Plateau.WATER,11(8),16.
MLA Zheng, Han,et al."Spatiotemporal Patterns of Terrestrial Evapotranspiration in Response to Climate and Vegetation Coverage Changes across the Chinese Loess Plateau".WATER 11.8(2019):16.
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