干旱区生态环境知识资源中心(Arid): Recent signal and impact of wet-to-dry climatic shift in Xinjiang, China

Arid

DOI	10.1007/s11442-021-1898-9
	Recent signal and impact of wet-to-dry climatic shift in Xinjiang, China
	Yao Junqiang; Mao Weiyi; Chen Jing; Dilinuer, Tuoliewubieke
通讯作者	Yao, JQ (corresponding author), China Meteorol Adm, Inst Desert Meteorol, Urumqi 830002, Peoples R China.
来源期刊	JOURNAL OF GEOGRAPHICAL SCIENCES
ISSN	1009-637X
EISSN	1861-9568
出版年	2021
卷号	31 期号:9 页码:1283-1298
英文摘要	The Xinjiang region of China is among the most sensitive regions to global warming. Based on the meteorological and hydrological observation data, the regional wet-to-dry climate regime shifts in Xinjiang were analyzed and the impacts of climatic shift on the eco-hydrological environment of Xinjiang were assessed in this study. The results showed that temperature and precipitation in Xinjiang have increased since the mid-1980s, showing a warming-wetting trend. However, drought frequency and severity significantly increased after 1997. The climate of Xinjiang experienced an obvious shift from a warm-wet to a warm-dry regime in 1997. Since the beginning of the 21st century, extreme temperatures and the number of high temperature days have significantly increased, the start date of high temperature has advanced, and the end date of high temperature has delayed in Xinjiang. In addition, the intensity and frequency of extreme precipitation have significantly increased. Consequently, regional ecology and water resources have been impacted by climatic shift and extreme climate in Xinjiang. In response, satellite-based normalized difference vegetation index showed that, since the 1980s, most regions of Xinjiang experienced a greening trend and vegetation browning after 1997. The soil moisture in Xinjiang has significantly decreased since the late 1990s, resulting in adverse ecological effects. Moreover, the response of river runoff to climatic shift is complex and controlled by the proportion of snowmelt to the runoff. Runoff originating from the Tianshan Mountains showed a positive response to the regional wet-to-dry shift, whereas that originating from the Kunlun Mountains showed no obvious response. Both climatic shift and increased climate extremes in Xinjiang have led to intensification of drought and aggravation of instability of water circulation systems and ecosystem. This study provides a scientific basis to meet the challenges of water resource utilization and ecological risk management in the Xinjiang region of China.
英文关键词	climatic shift wet-to-dry water resources drought Xinjiang
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000692383300003
WOS关键词	ARID REGION ; DROUGHT ; VEGETATION ; INDEX ; KARAKORAM ; DATASETS ; EVENTS
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363883
作者单位	[Yao Junqiang; Mao Weiyi; Chen Jing; Dilinuer, Tuoliewubieke] China Meteorol Adm, Inst Desert Meteorol, Urumqi 830002, Peoples R China
推荐引用方式 GB/T 7714	Yao Junqiang,Mao Weiyi,Chen Jing,et al. Recent signal and impact of wet-to-dry climatic shift in Xinjiang, China[J],2021,31(9):1283-1298.
APA	Yao Junqiang,Mao Weiyi,Chen Jing,&Dilinuer, Tuoliewubieke.(2021).Recent signal and impact of wet-to-dry climatic shift in Xinjiang, China.JOURNAL OF GEOGRAPHICAL SCIENCES,31(9),1283-1298.
MLA	Yao Junqiang,et al."Recent signal and impact of wet-to-dry climatic shift in Xinjiang, China".JOURNAL OF GEOGRAPHICAL SCIENCES 31.9(2021):1283-1298.