干旱区生态环境知识资源中心(Arid): Study on spring drought in cold and arid regions based on the ANOVA projection pursuit model

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DOI	10.1016/j.ecolind.2024.111772
	Study on spring drought in cold and arid regions based on the ANOVA projection pursuit model
	Pei, Wei; Hao, Lei; Fu, Qiang; Ren, Yongtai; Li, Tianxiao
通讯作者	Ren, YT
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2024
卷号	160
英文摘要	Due to the influence of snow cover and soil freeze-thaw processes in the early spring, the characteristics of spring drought in cold regions are different from those in other regions. This paper takes Qiqihar, a cold and semiarid grain production area in Northeast China, as the study area. Based on factors such as snow cover in the early spring period and precipitation, temperature, evapotranspiration, and soil moisture during the spring sowing period, a projection pursuit model with analysis of variance (ANOVA PPM) was used to analyze the spatiotemporal variation characteristics of regional spring drought. For the ANOVA PPM, based on the grouping of the projection points, local aggregation is measured by the mean square within groups, and overall dispersion is measured by the mean square between groups, thus achieving comparability and balance between overall dispersion and local aggregation. The spatial analysis of spring drought showed that, from a spatial perspective, there were significant spatial differences in spring drought in different subregions, and spring drought was closely related to latitude, with significant differences occurring at different latitudes. The northern region is relatively light, while the central and southern regions are more severe. From a temporal perspective, there are significant differences in spring droughts between different decades (1980 s, 1990 s, 2000 s and 2010 s). Overall, spring drought first intensifies and then decreases.
英文关键词	Spring drought Cold and arid regions Analysis of variance Projection pursuit model
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001199208700001
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403384
推荐引用方式 GB/T 7714	Pei, Wei,Hao, Lei,Fu, Qiang,et al. Study on spring drought in cold and arid regions based on the ANOVA projection pursuit model[J],2024,160.
APA	Pei, Wei,Hao, Lei,Fu, Qiang,Ren, Yongtai,&Li, Tianxiao.(2024).Study on spring drought in cold and arid regions based on the ANOVA projection pursuit model.ECOLOGICAL INDICATORS,160.
MLA	Pei, Wei,et al."Study on spring drought in cold and arid regions based on the ANOVA projection pursuit model".ECOLOGICAL INDICATORS 160(2024).