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

Arid

	Response of Vegetation Cover Change to Drought at Different Timescales in the Beijing-Tianjin Sandstorm Source Region, China
	Cao Bo; Kong Xiaole; Wang Yixuan; Liu Hang; Pei Hongwei; Shen Yanjun
来源期刊	中国地理科学(英文版)
ISSN	1002-0063
出版年	2021
卷号	31 期号:3 页码:1002-0063
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 Pearsons 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
国家	中国
开放获取类型	Bronze
收录类别	CSCD
WOS类目	Science & Technology - Other Topics
CSCD记录号	CSCD:6955543
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365413
作者单位	Cao Bo, The Innovative Academy of Seed Design (INASEED), Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences;;University of Chinese Academy of Sciences, Key Laboratory of Agricultural Water Resources, Chinese Academy of Sciences;;Hebei Laboratory of Agricultural Water-Saving;;, Shijiazhuang;;, ;;Beijing 050022;;100049.; Wang Yixuan, The Innovative Academy of Seed Design (INASEED), Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences;;University of Chinese Academy of Sciences, Key Laboratory of Agricultural Water Resources, Chinese Academy of Sciences;;Hebei Laboratory of Agricultural Water-Saving;;, Shijiazhuang;;, ;;Beijing 050022;;100049.; Liu Hang, The Innovative Academy of Seed Design (INASEED), Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences;;University of Chinese Academy of Sciences, Key Labor...
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 Timescales in the Beijing-Tianjin Sandstorm Source Region, China[J],2021,31(3):1002-0063.
APA	Cao Bo,Kong Xiaole,Wang Yixuan,Liu Hang,Pei Hongwei,&Shen Yanjun.(2021).Response of Vegetation Cover Change to Drought at Different Timescales in the Beijing-Tianjin Sandstorm Source Region, China.中国地理科学(英文版),31(3),1002-0063.
MLA	Cao Bo,et al."Response of Vegetation Cover Change to Drought at Different Timescales in the Beijing-Tianjin Sandstorm Source Region, China".中国地理科学(英文版) 31.3(2021):1002-0063.