Incorporating vegetation dynamics noticeably improved performance of hydrological model under vegetation greening

doi:10.1016/j.scitotenv.2018.06.233

	Incorporating vegetation dynamics noticeably improved performance of hydrological model under vegetation greening
	Bai, Peng 1; Liu, Xiaomang 1; Zhang, Yongqiang 2; Liu, Changming 1
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2018-12-01
卷号	643 页码:610-622
关键词	Hydrological model Evaporation estimates Vegetation dynamics Penman-Monteith
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2018.06.233
通讯作者	Liu, Xiaomang(liuxm@igsnrr.ac.cn)
英文摘要	Numerous hydrological models calculate actual evaporation as a function of potential evaporation (PET) and soil moisture stress. There are some limitations for such empirical equations since they do not consider vegetation changes, and therefore cannot account for the different responses of soil evaporation and plant transpiration to changes in environmental factors and cannot be used for evaluating the impacts of vegetation changes. Here, we investigated whether incorporating a physically based evaporation scheme into a grid-based hydrological model can improve the accuracy of hydrological simulations. The original and modified hydrological models were evaluated in a basin which has experienced rapid vegetation greening. The model evaluations were performed using streamflow observations, soil moisture observations and water balance-based evaporation estimates. Results indicated that the modified model can provide better evaporation simulations than the original model during the period of vegetation greening. The streamflow and soil moisture simulations by the modified model over the same period benefitted significantly from the improvement in evaporation simulations and exhibited better consistency with in situ observations than the original model. This study underscores the importance of including vegetation change information in evaporation estimates and demonstrated that the physically based evaporation equation can be used in hydrological models to improve the hydrological simulations under vegetation greening conditions. (c) 2018 Elsevier B.V. All rights reserved.
资助项目	Natural Science Foundation of China[41330529] ; Natural Science Foundation of China[41601034] ; Natural Science Foundation of China[41571024]
WOS关键词	GLOBAL TERRESTRIAL EVAPOTRANSPIRATION ; RAINFALL-RUNOFF MODELS ; PARAMETER-ESTIMATION ; SOIL EVAPORATION ; GRACE SATELLITES ; PAN EVAPORATION ; WATER ; CHINA ; CLIMATE ; TRANSPIRATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000444625900057
资助机构	Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/52931]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Xiaomang
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.CSIRO Land & Water, GPO Box 1700, Canberra, ACT 2601, Australia
推荐引用方式 GB/T 7714	Bai, Peng,Liu, Xiaomang,Zhang, Yongqiang,et al. Incorporating vegetation dynamics noticeably improved performance of hydrological model under vegetation greening[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,643:610-622.
APA	Bai, Peng,Liu, Xiaomang,Zhang, Yongqiang,&Liu, Changming.(2018).Incorporating vegetation dynamics noticeably improved performance of hydrological model under vegetation greening.SCIENCE OF THE TOTAL ENVIRONMENT,643,610-622.
MLA	Bai, Peng,et al."Incorporating vegetation dynamics noticeably improved performance of hydrological model under vegetation greening".SCIENCE OF THE TOTAL ENVIRONMENT 643(2018):610-622.