Evapotranspiration partitioning using an optimality-based ecohydrological model in a semiarid shrubland

doi:10.1080/17538947.2018.1503741

	Evapotranspiration partitioning using an optimality-based ecohydrological model in a semiarid shrubland
	Chen, Lajiao 7; Su, Liying 8; Liu, Weijiang 9; Wang, Lizhe 1,7; Wu, Hui 2,3; Zhu, A-Xing 4,6; Luo, Yiqi 5
刊名	INTERNATIONAL JOURNAL OF DIGITAL EARTH
	2019-12-02
卷号	12 期号:12 页码:1423-1440
关键词	ET partitioning optimality-based ecohydrological model VOM semiarid shrubland
ISSN号	1753-8947
DOI	10.1080/17538947.2018.1503741
通讯作者	Wang, Lizhe(wanglz@radi.ac.cn)
英文摘要	Partitioning of evapotranspiration (ET) into biological component transpiration (T) and non-biological component evaporation (E) is crucial in understanding the impact of environmental change on ecosystems and water resources. However, direct measurement of transpiration is still challenging. In this paper, an optimality-based ecohydrological model named Vegetation Optimality Model (VOM) is applied for ET partitioning. The results show that VOM model can reasonably simulate ET and ET components in a semiarid shrubland. Overall, the ratio of transpiration to evapotranspiration is 49% for the whole period. Evaporation and plant transpiration mainly occur in monsoon following the precipitation events. Evaporation responds immediately to precipitation events, while transpiration shows a lagged response of several days to those events. Different years demonstrate different patterns of T/ET ratio dynamic in monsoon. Some of the years show a low T/ET ratio at the beginning of monsoon and slowly increased T/ET ratio. Other years show a high level of T/ET ratio for the whole monsoon. We find out that spring precipitation, especially the size of the precipitation, has a significant influence on the T/ET ratio in monsoon.
资助项目	National Key Research and Development Program of China[2017YFC050540503] ; National Natural Science Foundation of China[41301028] ; National Natural Science Foundation of China[41571413] ; National Natural Science Foundation of China[41701520] ; National Natural Science Foundation of China[41471368] ; National Natural Science Foundation of China[201704910065] ; China Scholarship Council (CSC)
WOS关键词	CARBON-DIOXIDE EXCHANGE ; WATER-USE ; EVAPORATION ; DYNAMICS
WOS研究方向	Physical Geography ; Remote Sensing
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000498765400004
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; China Scholarship Council (CSC)
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/130137]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Lizhe
作者单位	1.China Univ Geosci, Comp Sci & Geol Survey CUG, Wuhan 430074, Hubei, Peoples R China 2.Hangzhou Dianzi Univ, Smart City Res Ctr, Hangzhou, Zhejiang, Peoples R China 3.Smart City Res Ctr Zhejiang Prov, Hangzhou, Zhejiang, Peoples R China 4.Nanjing Normal Univ, Sch Geog, Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing, Jiangsu, Peoples R China 5.No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ 86011 USA 6.Univ Wisconsin, Dept Geog, Madison, WI 53706 USA 7.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing 100094, Peoples R China 8.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China 9.Chinese Acad Environm Planning, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Chen, Lajiao,Su, Liying,Liu, Weijiang,et al. Evapotranspiration partitioning using an optimality-based ecohydrological model in a semiarid shrubland[J]. INTERNATIONAL JOURNAL OF DIGITAL EARTH,2019,12(12):1423-1440.
APA	Chen, Lajiao.,Su, Liying.,Liu, Weijiang.,Wang, Lizhe.,Wu, Hui.,...&Luo, Yiqi.(2019).Evapotranspiration partitioning using an optimality-based ecohydrological model in a semiarid shrubland.INTERNATIONAL JOURNAL OF DIGITAL EARTH,12(12),1423-1440.
MLA	Chen, Lajiao,et al."Evapotranspiration partitioning using an optimality-based ecohydrological model in a semiarid shrubland".INTERNATIONAL JOURNAL OF DIGITAL EARTH 12.12(2019):1423-1440.