An improved complementary relationship for estimating evapotranspiration attributed to climate change and revegetation in the Loess Plateau, China

doi:10.1016/j.jhydrol.2020.125516

	An improved complementary relationship for estimating evapotranspiration attributed to climate change and revegetation in the Loess Plateau, China
	Li, Tiansheng 4; Xia, Jun 1,2,4; Zhang, Lu 3; She, Dunxian 1,4; Wang, Gangsheng 4; Cheng, Lei 4
刊名	JOURNAL OF HYDROLOGY
	2021
卷号	592 页码:13
关键词	Evapotranspiration Complementary relationship Parameter alpha(c) Climate change Revegetation
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2020.125516
通讯作者	Xia, Jun(xiajun666@whu.edu.cn) ; Zhang, Lu(Lu.Zhang@csiro.au)
英文摘要	Evapotranspiration (ET) is a key component in terrestrial climate and vegetation interactions. A generalized complementary relationship proposed by Brutsaert (2015); Brutsaert et al. (2020) has been shown to be a powerful tool for ET estimation. As the single parameter in the generalized complementary relationship, it is generally accepted that alpha(c) has high spatial variability and is closely correlated to the land-surface conditions. However, understanding of the temporal variability in alpha(c) is also important in a changing environment. In this study, we investigated the impacts of climate change and revegetation on ET by establishing the relationship between alpha(c) and the climatic-vegetation factors in 14 catchments of the Loess Plateau. The results showed that alpha(c) presented both spatial and temporal variability, where the aridity index (AI) and the average Normalized Difference Vegetation Index (NDVI) during the growing season are two dominant factors that control the variability in alpha(c). Furthermore, combing the generalized complementary relationship and the empirical model of alpha(c) proposed in this study, the impacts of climate change and revegetation on the ET increase were quantified in the Loess Plateau. The results show that climate change (mainly expressed by an increase in precipitation) contributed the most to the ET increase (approximately 68% on average), whereas revegetation (quantified by the NDVI increase) also played a dominant role (approximately 32% on average) in the ET increase, which suggests that revegetation planning management should pay more attention to the increased water consumption by evapotranspiration in the sustainable economic and ecological development of the Loess Plateau.
资助项目	National Natural Science Foundation of China[41890823]
WOS关键词	LANDSCAPE EVAPORATION ; SOIL-MOISTURE ; WATER ; VARIABILITY ; SIMULATIONS ; PRINCIPLE ; BALANCE ; MODELS ; CO2
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000639844900001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162543]
专题	中国科学院地理科学与资源研究所
通讯作者	Xia, Jun; Zhang, Lu
作者单位	1.Wuhan Univ, Hubei Key Lab Water Syst Sci Sponge City Construc, Wuhan, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.CSIRO Land & Water, Christian Lab, Canberra, ACT, Australia 4.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Li, Tiansheng,Xia, Jun,Zhang, Lu,et al. An improved complementary relationship for estimating evapotranspiration attributed to climate change and revegetation in the Loess Plateau, China[J]. JOURNAL OF HYDROLOGY,2021,592:13.
APA	Li, Tiansheng,Xia, Jun,Zhang, Lu,She, Dunxian,Wang, Gangsheng,&Cheng, Lei.(2021).An improved complementary relationship for estimating evapotranspiration attributed to climate change and revegetation in the Loess Plateau, China.JOURNAL OF HYDROLOGY,592,13.
MLA	Li, Tiansheng,et al."An improved complementary relationship for estimating evapotranspiration attributed to climate change and revegetation in the Loess Plateau, China".JOURNAL OF HYDROLOGY 592(2021):13.