干旱区生态环境知识资源中心(Arid): Response of Vegetation Cover Change to Drought at Different Time-scales in the Beijing-Tianjin Sandstorm Source Region, China

Arid

DOI	10.1007/s11769-021-1206-8
	Response of Vegetation Cover Change to Drought at Different Time-scales in the Beijing-Tianjin Sandstorm Source Region, China
	Cao Bo; Kong Xiaole; Wang Yixuan; Liu Hang; Hongwei, Pei; Shen Yan-jun
通讯作者	Shen, YJ (corresponding author), Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res,Key Lab Agr Water Resources, Innovat Acad Seed Design INASEED,Hebei Lab Agr Wa, Shijiazhuang 050022, Peoples R China.
来源期刊	CHINESE GEOGRAPHICAL SCIENCE
ISSN	1002-0063
EISSN	1993-064X
出版年	2021
卷号	31 期号:3 页码:491-505
英文摘要	Dominated by an arid and semiarid continental climate, the Beijing-Tianjin Sandstorm Source Region (BTSSR) is a typical ecologically fragile region with frequently occurring droughts. To provide information for regional vegetation protection and drought prevention, we assessed the relations between vegetation cover change (measured by the Normalized Difference Vegetation Index, NDVI) and the Standardized Precipitation Evapotranspiration Index (SPEI) at different time-scales, in different growth stages, in different subregions and for different vegetation types based on the Pearson's correlation coefficient in the BTSSR from 2000 to 2017. Results showed that 88.19% of the vegetated areas experienced increased NDVI in the growing season; 48.3% of the vegetated areas experienced significantly increased NDVI (P < 0.05) and were mainly in the south of the BTSSR. During the growing season, a wetter climate contributed to the increased vegetation cover from 2000 to 2017, and NDVI anomalies were closely related to SPEI. The maximum correlation coefficient in the growing season (Rmax) was significantly positive (P < 0.05) in 97.84% of the total vegetated areas. In the vegetated areas with significantly positive Rmax, pixels with short time-scales (1-3 mon) accounted for the largest proportion (33.9%). The sensitivity of vegetation to the impact of drought rose first and then decreased in the growing season, with a peak in July. Compared with two subregions in the south, subregions in the north of the BTSSR were more sensitive to the impacts of drought variations, especially in the Xilingol Plateau and Wuzhumuqin Basin. All four major vegetation types were sensitive to the effects of drought variations, especially grasslands. The time-scales of the most impacting droughts varied with growth stages, regions, and vegetation types. These results can help us understand the relations between vegetation and droughts, which are important for ecological restoration and drought prevention.
英文关键词	vegetation cover change standardized precipitation evapotranspiration index (SPEI) ecological restoration drought prevention Beijing-Tianjin Sandstorm Source Region (BTSSR)
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000648287300008
WOS关键词	SAND SOURCE REGION ; CRITICAL CLIMATE PERIODS ; LOESS PLATEAU ; GROWING-SEASON ; GROWTH ; EVAPOTRANSPIRATION ; DYNAMICS ; LAG ; PRODUCTIVITY ; RESTORATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367932
作者单位	[Cao Bo; Kong Xiaole; Wang Yixuan; Liu Hang; Shen Yan-jun] Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res,Key Lab Agr Water Resources, Innovat Acad Seed Design INASEED,Hebei Lab Agr Wa, Shijiazhuang 050022, Peoples R China; [Cao Bo; Wang Yixuan; Liu Hang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Hongwei, Pei] Hebei Univ Architecture, Zhangjiakou 075000, Peoples R China
推荐引用方式 GB/T 7714	Cao Bo,Kong Xiaole,Wang Yixuan,et al. Response of Vegetation Cover Change to Drought at Different Time-scales in the Beijing-Tianjin Sandstorm Source Region, China[J],2021,31(3):491-505.
APA	Cao Bo,Kong Xiaole,Wang Yixuan,Liu Hang,Hongwei, Pei,&Shen Yan-jun.(2021).Response of Vegetation Cover Change to Drought at Different Time-scales in the Beijing-Tianjin Sandstorm Source Region, China.CHINESE GEOGRAPHICAL SCIENCE,31(3),491-505.
MLA	Cao Bo,et al."Response of Vegetation Cover Change to Drought at Different Time-scales in the Beijing-Tianjin Sandstorm Source Region, China".CHINESE GEOGRAPHICAL SCIENCE 31.3(2021):491-505.