气候变化领域集成服务门户(CCPortal): Spatiotemporal pattern of terrestrial evapotranspiration in China during the past thirty years

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DOI	10.1016/j.agrformet.2018.04.020
	Spatiotemporal pattern of terrestrial evapotranspiration in China during the past thirty years
	Li, Xiangyi; He, Yue; Zeng, Zhenzhong; Lian, Xu; Wang, Xuhui; Du, Mingyuan; Jia, Gensuo; Li, Yingnian; Ma, Yaoming; Tang, Yanhong; Wang, Weizhen; Wu, Zhixiang; Yan, Junhua; Yao, Yitong; Ciais, Philippe; Zhang, Xianzhou; Zhang, Yiping; Zhang, Yu; Zhou, Guangsheng; Piao, Shilong
通讯作者	Piao, SL (通讯作者)
发表日期	2018
ISSN	0168-1923
EISSN	1873-2240
起始页码	131
结束页码	140
卷号	259
英文摘要	Evapotranspiration (ET) is one of the most important fluxes in terrestrial ecosystems that regulate atmosphere -hydrosphere-biosphere interactions. Several studies have suggested that global ET has significantly increased in the past several decades, and that such increase has exhibited big spatial variability, but there are few detailed studies on the spatio-temporal change in ET over China. Here, we developed a high-resolution data oriented monthly ET product in China between 1982 and 2015 by integrating remote-sensing and the eddy covariance technique observed ET data in a machine learning approach (model tree ensemble, MTE). We showed that the mean annual ET over China is 552 +/- 14 nun yr(-1), which is comparable to the estimate from a MTE-derived product based on water balance, but is larger than that from both previous MTh-derived global product and process-based land surface models. ET in China significantly increased with a rate of 10.7 mm yr(-1) per decade over the past 30 years (p < 0.05). The largest increases in ET ( > 60 mm yr(-1) per decade) occurred in the eastern periphery of Sichuan, southern Taiwan, and central China, which was attributed to the increases in temperature and solar radiation, as well as the enhanced vegetation productivity. About 22% of the area showed a decreasing trend in ET, mainly in parts of southeastern, southwestern, and northeastern China. The regional decrease in ET was likely due to decreasing precipitation and/or vegetation browning. Although our finding of the significant increase in China's ET at the country scale is supported by five different ET products, there are still less agreement on the change in ET at the regional scale among different ET products.
关键词	LAND EVAPOTRANSPIRATION WORLDWIDE ANALYSIS SOIL EVAPORATION CLIMATE-CHANGE WATER CARBON MODEL ENERGY TRENDS FLUXES
英文关键词	China Eddy covariance; Evapotranspiration; Model tree ensemble (MTE); Spatio-temporal change; Land surface model
语种	英语
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000437064400012
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259378
推荐引用方式 GB/T 7714	Li, Xiangyi,He, Yue,Zeng, Zhenzhong,et al. Spatiotemporal pattern of terrestrial evapotranspiration in China during the past thirty years[J]. 中国科学院青藏高原研究所,2018,259.
APA	Li, Xiangyi.,He, Yue.,Zeng, Zhenzhong.,Lian, Xu.,Wang, Xuhui.,...&Piao, Shilong.(2018).Spatiotemporal pattern of terrestrial evapotranspiration in China during the past thirty years.AGRICULTURAL AND FOREST METEOROLOGY,259.
MLA	Li, Xiangyi,et al."Spatiotemporal pattern of terrestrial evapotranspiration in China during the past thirty years".AGRICULTURAL AND FOREST METEOROLOGY 259(2018).