干旱区生态环境知识资源中心(Arid): Drought Assessment in a Semi-Arid River Basin in China and its Sensitivity to Different Evapotranspiration Models

Arid

DOI	10.3390/w11051061
	Drought Assessment in a Semi-Arid River Basin in China and its Sensitivity to Different Evapotranspiration Models
	Zhang, Dan; Li, Zhanling; Tian, Qingyun; Feng, Yaru
通讯作者	Li, Zhanling
来源期刊	WATER
EISSN	2073-4441
出版年	2019
卷号	11 期号:5
英文摘要	The Standardized Precipitation Evapotranspiration Index (SPEI) is widely used for climatological and hydrological studies, in which the estimation of potential evapotranspiration (PET) is of great importance. As many different models exist in estimating PET, the question that arises is in which way the selection of the PET model affects the calculated SPEI and the drought assessment. This study, on the basis of evaluating drought conditions over the Hexi Inland River Basin in China with long-term climate data of 18 stations by using SPEI, compared three types and eight kinds different PET models with respect to their sensitivity to the calculation of SPEI, and to drought events and drought characteristics. The results showed that the study area experienced a drying trend over the past 56 years, and the extreme drought events occurred more frequently after 2000 as a whole. All the investigated PET models were sensitive to the estimation of SPEI and to the drought assessment. When considering the alternatives of the Thornthwaite model in the calculation of SPEI for drought identification, the Blaney-Criddle equation among the temperature-based models and the Makkink equation among the radiation-based models are recommended due to the comparable results in determining the drought trends, drought events, and drought characteristics.
英文关键词	SPEI potential evapotranspiration sensitivity Hexi Inland River Basin
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000472680400191
WOS关键词	SPEI ; INDEXES ; EVAPORATION
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219205
作者单位	China Univ Geosci Beijing, Sch Water Resources & Environm, MOE Key Lab Groundwater Circulat & Environm Evolu, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Dan,Li, Zhanling,Tian, Qingyun,et al. Drought Assessment in a Semi-Arid River Basin in China and its Sensitivity to Different Evapotranspiration Models[J],2019,11(5).
APA	Zhang, Dan,Li, Zhanling,Tian, Qingyun,&Feng, Yaru.(2019).Drought Assessment in a Semi-Arid River Basin in China and its Sensitivity to Different Evapotranspiration Models.WATER,11(5).
MLA	Zhang, Dan,et al."Drought Assessment in a Semi-Arid River Basin in China and its Sensitivity to Different Evapotranspiration Models".WATER 11.5(2019).