干旱区生态环境知识资源中心(Arid): Temporal and Spatial Changes of Drought Characteristics in Temperate Steppes in China from 1960 to 2020

Arid

DOI	10.3390/su151712909
	Temporal and Spatial Changes of Drought Characteristics in Temperate Steppes in China from 1960 to 2020
	Chen, Jie; Zhang, Bo; Zhou, Jing; Guo, Feng
通讯作者	Zhang, B
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2023
卷号	15 期号:17
英文摘要	To study the change in drought characteristics, it is helpful to explore the dynamics of drought, analyze the rules of drought, and prevent drought. The annual and seasonal standardized precipitation evapotranspiration index (SPEI) was calculated based on the meteorological data of the temperate steppe region of China from 1960 to 2020, and the spatio-temporal variation of drought characteristics was analyzed by combining the run-course theory to identify drought characteristics. The results show that: (1) During 1960-2020, the SPEI of the temperate steppe region fluctuated in the range of -1.5 to 1.5 and decreased significantly at a rate of-0.02.a(-1) (p < 0.01). In general, there is an increasing trend of drought in the temperate steppe region. (2) There is little difference in the duration of drought in the four seasons, and the very low duration of drought is about 2 months. The cumulative drought intensity was higher in the semi-arid and semi-humid zones of the temperate zone. (3) The very low value of drought frequency occurred in summer, and the very high value of drought frequency occurred in winter. From SPEI-3 to SPEI-12, that is, from seasonal scale to interannual scale, with the increase of time scale, the distribution of the extreme value of drought frequency moved to the southwest, semi-arid, and arid areas. The frequency of the four drought levels showed light drought > middle drought > severe drought > extreme drought in all time scales and all zones.
英文关键词	climate change standardized precipitation evapotranspiration index (SPEI) run-length theory steppe type
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:001064285200001
WOS关键词	TRENDS
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/2XILL650/398828
推荐引用方式 GB/T 7714	Chen, Jie,Zhang, Bo,Zhou, Jing,et al. Temporal and Spatial Changes of Drought Characteristics in Temperate Steppes in China from 1960 to 2020[J],2023,15(17).
APA	Chen, Jie,Zhang, Bo,Zhou, Jing,&Guo, Feng.(2023).Temporal and Spatial Changes of Drought Characteristics in Temperate Steppes in China from 1960 to 2020.SUSTAINABILITY,15(17).
MLA	Chen, Jie,et al."Temporal and Spatial Changes of Drought Characteristics in Temperate Steppes in China from 1960 to 2020".SUSTAINABILITY 15.17(2023).