干旱区生态环境知识资源中心(Arid): Analysis of Drought Characteristics and Its Effects on Crop Yield in Xinjiang in Recent 60 Years

Arid

DOI	10.3390/su132413833
	Analysis of Drought Characteristics and Its Effects on Crop Yield in Xinjiang in Recent 60 Years
	Cheng, Junqi; Yin, Shuyan
通讯作者	Yin, SY (corresponding author)，Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Peoples R China.
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2021
卷号	13 期号:24
英文摘要	With global warming, the frequency of drought in China is gradually increasing. The study of drought characteristics and its impact on crop yield is of great significance to ecological construction and food security. Based on the SPEI index in Xinjiang from 1961 to 2020, the changing characteristics of drought and their responses to meteorological yield of three kinds of crops (cotton, wheat and corn) were analyzed. The results revealed that the SPEI in Xinjiang exhibited a decreasing trend. Drought occurred less during 1961-1996 and mainly occurred during 1997-2020. The annual variation trend of SPEI decreased regionally, and the arid trend increased from northwest to southeast. The seasonal variation in SPEI displayed an increasing trend only in winter, but a decreasing trend in spring, summer and autumn. The decreasing trend of the SPEI index in spring accounted for 90.91%, mainly distributed in the central and eastern part of Xinjiang; the decreasing trend in summer accounted for 81.82%, mainly located in the eastern part of Xinjiang; the decreasing trend in autumn accounted for 84.85%, mainly located in the south and central and eastern part of Xinjiang; the decreasing trend in winter accounted for only 33.33%, mainly located in the southwest, central and eastern part of Xinjiang; the per unit area yield of the three kinds of crops showed a significant increasing trend (p < 0.01). The meteorological yield of cotton showed an increasing trend, while that of wheat and corn showed a decreasing trend. Correlation analysis of climatic yield and SPEI, and regression analysis of standardized climatic yield residuals and SPEI in different seasons revealed that drought in spring and autumn had the greatest effect on the meteorological yield of cotton, while drought in spring and summer had the greatest effect on the meteorological yield of wheat and corn.
英文关键词	drought characteristics crop yield Xinjiang SPEI index climate changes
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000737423700001
WOS关键词	AGRICULTURAL DROUGHT ; INDEX
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/375794
作者单位	[Cheng, Junqi; Yin, Shuyan] Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Junqi,Yin, Shuyan. Analysis of Drought Characteristics and Its Effects on Crop Yield in Xinjiang in Recent 60 Years[J],2021,13(24).
APA	Cheng, Junqi,&Yin, Shuyan.(2021).Analysis of Drought Characteristics and Its Effects on Crop Yield in Xinjiang in Recent 60 Years.SUSTAINABILITY,13(24).
MLA	Cheng, Junqi,et al."Analysis of Drought Characteristics and Its Effects on Crop Yield in Xinjiang in Recent 60 Years".SUSTAINABILITY 13.24(2021).