干旱区生态环境知识资源中心(Arid): Desert vegetation responses to the temporal distribution patterns of precipitation across the northern Xinjiang, China

Arid

DOI	10.1016/j.catena.2021.105544
	Desert vegetation responses to the temporal distribution patterns of precipitation across the northern Xinjiang, China
	Liu, Chao; Yan, Xiaoyue; Jiang, Fengqing
通讯作者	Jiang, FQ (corresponding author), Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Xinjiang, Peoples R China. ; Jiang, FQ (corresponding author), Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Xinjiang, Peoples R China.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	206
英文摘要	Vegetation in arid/semiarid areas in the northern hemisphere is highly sensitive to precipitation variability. Understanding the change of dryland vegetation and its response to spatiotemporal patterns of precipitation changes is critical to delve impacts of meteorological droughts on dryland vegetation. Based on the Normalized Difference Vegetation Index (NDVI) and precipitation data, we delineated the spatiotemporal pattern of trends of the arid/semiarid plant growth and its responses to daily precipitation changes in the northern Xinjiang. The results indicated several regular characteristics in the NDVI responses to precipitation at unequal time and spatial scales during the growing season, i.e. April-October. It identified shortening time lags of NDVI responses to precipitation over time. This study found for the first time that precipitation changes tend to impact NDVI changes given dry period length (DL) of > 18 days, and the effect of precipitation process was more significant. Three temporal distribution types of a precipitation process were classified, i.e. A-type or B-type precipitation process, which are characterized by two consecutive rainfall days with less or larger precipitation amount on the first day than the next day, and C-type precipitation process, which is characterized by three or more consecutive rainfall days. A- and B-type precipitation processes can benefit availability of moisture in the medium and early stage of the growing season respectively. Precipitation of 6.1-12.0 mm is the most favorable condition for the growth of desert vegetation. This study highlights multifarious vegetation responses to different precipitation processes and provides theoretical ground for ecological restoration and conservation in a changing environment across northern Xinjiang, China, and also in drylands in other regions of the globe.
英文关键词	NDVI Precipitation distribution Desert vegetation Tendency Time-lag response Dry period
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000688449100053
WOS关键词	CLIMATE-CHANGE ; RIVER-BASIN ; SPATIOTEMPORAL VARIATION ; INNER-MONGOLIA ; LOESS PLATEAU ; ARID REGION ; DROUGHT ; PHENOLOGY ; DYNAMICS ; IMPACTS
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362791
作者单位	[Liu, Chao; Yan, Xiaoyue; Jiang, Fengqing] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Xinjiang, Peoples R China; [Liu, Chao; Yan, Xiaoyue] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Liu, Chao; Yan, Xiaoyue; Jiang, Fengqing] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Liu, Chao,Yan, Xiaoyue,Jiang, Fengqing. Desert vegetation responses to the temporal distribution patterns of precipitation across the northern Xinjiang, China[J]. 中国科学院新疆生态与地理研究所,2021,206.
APA	Liu, Chao,Yan, Xiaoyue,&Jiang, Fengqing.(2021).Desert vegetation responses to the temporal distribution patterns of precipitation across the northern Xinjiang, China.CATENA,206.
MLA	Liu, Chao,et al."Desert vegetation responses to the temporal distribution patterns of precipitation across the northern Xinjiang, China".CATENA 206(2021).