干旱区生态环境知识资源中心(Arid): Spatio-temporal evolution and non-stationary characteristics of meteorological drought in inland arid areas

Arid

DOI	10.1016/j.ecolind.2021.107644
	Spatio-temporal evolution and non-stationary characteristics of meteorological drought in inland arid areas
	He, Bing; Chang, Jianxia; Wang, Yimin; Wang, Yan; Zhou, Shuai; Chen, Chen
通讯作者	Chang, JX (corresponding author), Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian 710048, Peoples R China.
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2021
卷号	126
英文摘要	The climate system has both non-stationary and nonlinear characteristics. The non-stationary processes such as climate change and human activities have brought severe challenges to life, agriculture and ecology in arid areas. It is of great practical significance to study the spatiotemporal variation and non-stationary characteristics of drought in arid region for adopting the countermeasures to adapt to climate change. The traditional trend change and variation analysis method was used to study the drought change characteristics, which could not effectively identify the clustering phenomenon of drought and the spatial and temporal variation of drought in different time intervals. Therefore, the method of breaks for additive seasonal and trend (BFAST) was introduced to determine the non-stationary characteristics and spatial variation of drought. In this study, a typical inland arid area was taken as the study area, and the drought was quantified by standardized precipitation evapotranspiration index (SPEI). The results show that: (1) the study area was prone to light drought and moderate drought, and the duration and intensity of drought events increased significantly after 1996; (2) The spatial distribution of drought frequency and drought intensity in different seasons were significantly different; (3) The results of BFAST analysis showed that there were four discontinuities in SPEI12 time series, which indicated that the drought in the study area had obvious non-stationary characteristics. Through the analysis of the breakpoint and drought change characteristics in the study area, the occurrence time of the breakpoint in the northern region had a certain periodicity, and the climate was in a state of aridity. The results of this study have important guiding significance for further understanding the non-stationary characteristics of drought in inland arid areas, and will promote the management of water resources and the protection of ecological environment.
英文关键词	Non-stationary Drought BFAST Inland arid areas Standardized precipitation evapotranspiration index
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:000647802300010
WOS关键词	CHINA ; XINJIANG ; STATIONARITY ; SEVERITY ; PATTERNS ; INDEX
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/2XILL650/350004
作者单位	[He, Bing; Chang, Jianxia; Wang, Yimin; Wang, Yan; Zhou, Shuai; Chen, Chen] Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian 710048, Peoples R China
推荐引用方式 GB/T 7714	He, Bing,Chang, Jianxia,Wang, Yimin,et al. Spatio-temporal evolution and non-stationary characteristics of meteorological drought in inland arid areas[J],2021,126.
APA	He, Bing,Chang, Jianxia,Wang, Yimin,Wang, Yan,Zhou, Shuai,&Chen, Chen.(2021).Spatio-temporal evolution and non-stationary characteristics of meteorological drought in inland arid areas.ECOLOGICAL INDICATORS,126.
MLA	He, Bing,et al."Spatio-temporal evolution and non-stationary characteristics of meteorological drought in inland arid areas".ECOLOGICAL INDICATORS 126(2021).