干旱区生态环境知识资源中心(Arid): Drought propagation and construction of a comprehensive drought index based on the Soil and Water Assessment Tool (SWAT) and empirical Kendall distribution function (K-C '): a case study for the Jinta River basin in northwestern China

Arid

DOI	10.5194/nhess-21-1323-2021
	Drought propagation and construction of a comprehensive drought index based on the Soil and Water Assessment Tool (SWAT) and empirical Kendall distribution function (K-C '): a case study for the Jinta River basin in northwestern China
	Liang, Zheng; Su, Xiaoling; Feng, Kai
通讯作者	Su, XL (corresponding author), Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China. ; Su, XL (corresponding author), Northwest A&F Univ, Minist Educ, Key Lab Agr Soil & Water Engn Arid Area, Yangling 712100, Shaanxi, Peoples R China.
来源期刊	NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
ISSN	1561-8633
EISSN	1684-9981
出版年	2021
卷号	21 期号:4 页码:1323-1335
英文摘要	Monitoring drought and mastering the laws of drought propagation are the basis for regional drought prevention and resistance. Multivariate drought indicators considering meteorological, agricultural and hydrological information may fully describe drought conditions. However, series of hydrological variables in cold and arid regions that are too short or missing make it difficult to monitor drought. This paper proposed a method combining Soil and Water Assessment Tool (SWAT) and empirical Kendall distribution function (K-C') for drought monitoring. The SWAT model, based on the principle of runoff formation, was used to simulate the hydrological variables of the drought evolution process. Three univariate drought indexes, namely meteorological drought (standardized precipitation evapotranspiration index; SPEI), agricultural drought (standardized soil moisture index; SSI) and hydrological drought (standardized streamflow drought index; SDI), were constructed using a parametric or non-parametric method to analyze the propagation time from meteorological drought to agricultural drought and hydrological drought. The K-C' was used to build a multivariable comprehensive meteorology-agriculture-hydrology drought index (MAHDI) that integrated meteorological, agricultural and hydrological drought to analyze the characteristics of a comprehensive drought evolution. The Jinta River in the inland basin of northwestern China was used as the study area. The results showed that agricultural and hydrological drought had a seasonal lag time from meteorological drought. The degree of drought in this basin was high in the northern and low in the southern regions. MAHDI proved to be acceptable in that it was consistent with historical drought records, could catch drought conditions characterized by univariate drought indexes, and capture the occurrence and end of droughts. Nevertheless, its ability to characterize mild and moderate droughts was stronger than severe droughts. In addition, the comprehensive drought conditions showed insignificant aggravating trends in spring and summer and showed insignificant alleviating trends in autumn and winter and at annual scales. The results provided theoretical support for the drought monitoring in the Jinta River basin. This method provided the possibility for drought monitoring in other watersheds lacking measured data.
类型	Article
语种	英语
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000646700800001
WOS关键词	MODEL ; CLIMATE ; CALIBRATION ; SATELLITE
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351184
作者单位	[Liang, Zheng; Su, Xiaoling; Feng, Kai] Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China; [Liang, Zheng; Su, Xiaoling; Feng, Kai] Northwest A&F Univ, Minist Educ, Key Lab Agr Soil & Water Engn Arid Area, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Liang, Zheng,Su, Xiaoling,Feng, Kai. Drought propagation and construction of a comprehensive drought index based on the Soil and Water Assessment Tool (SWAT) and empirical Kendall distribution function (K-C '): a case study for the Jinta River basin in northwestern China[J]. 西北农林科技大学,2021,21(4):1323-1335.
APA	Liang, Zheng,Su, Xiaoling,&Feng, Kai.(2021).Drought propagation and construction of a comprehensive drought index based on the Soil and Water Assessment Tool (SWAT) and empirical Kendall distribution function (K-C '): a case study for the Jinta River basin in northwestern China.NATURAL HAZARDS AND EARTH SYSTEM SCIENCES,21(4),1323-1335.
MLA	Liang, Zheng,et al."Drought propagation and construction of a comprehensive drought index based on the Soil and Water Assessment Tool (SWAT) and empirical Kendall distribution function (K-C '): a case study for the Jinta River basin in northwestern China".NATURAL HAZARDS AND EARTH SYSTEM SCIENCES 21.4(2021):1323-1335.