干旱区生态环境知识资源中心(Arid): Assessing the relationship between drought and vegetation dynamics in northern China during 1982-2015

Arid

DOI	10.1007/s00704-022-03956-2
	Assessing the relationship between drought and vegetation dynamics in northern China during 1982-2015
	Geng, Guangpo; Zhou, Hongkui; Wang, Tao
通讯作者	Geng, GP (corresponding author)，Xian Univ Sci & Technol, Coll Geomat, Xian 710054, Peoples R China.
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
ISSN	0177-798X
EISSN	1434-4483
出版年	2022-02
英文摘要	Vegetation is an indicator of changes in the ecological environment and a key source of feedback on the impact of drought. In this work we selected northern China as the study area and used the standardized precipitation evapotranspiration index (SPEI) and the normalized difference vegetation index (NDVI) to assess the relationship between drought and vegetation dynamics at annual and seasonal scales for the period 1982-2015. The results indicated that annual drought showed a slight increase in northern China during this time, and it was mainly attributed to the intensified summer drought; the percentages of areas where significant drying, drying, wetting, and significant wetting occurred accounted for 3.30%, 53.36%, 40.39%, and 2.95%, respectively. Annual NDVI showed a highly significant (p < 0.01) upward trend in northern China, suggesting that vegetation there is greening. However, there was still a significant decrease in the NDVI trend in 13.65% of the study area, and forest accounted for the greatest area among the three land cover types studied. A positive correlation between annual SPEI and annual NDVI was found in most of northern China, and 18.66% of the study area (p < 0.05) were mainly distributed in the central-eastern part of Inner Mongolia, the central part of the Loess Plateau, and northwestern part of Xinjiang Province. Residual analysis found that the percentages of vegetation dynamics affected by human-induced degradation, human-induced improvement, and drought accounted for 13.91%, 47.91%, and 38.18%, respectively; however, 54.15% of the areas affected by drought were located in arid and semi-arid regions and that about 54.61% of those were grassland. The work could provide guidance for vegetation construction and water resource management in northern China.
英文关键词	Drought SPEI NDVI Northern China Correlation
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000750727900002
WOS关键词	GLOBAL DROUGHT ; CLIMATE-CHANGE ; TIME-SCALES ; TRENDS ; BALANCE ; GROWTH ; IMPACT ; COVER
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377347
作者单位	[Geng, Guangpo; Wang, Tao] Xian Univ Sci & Technol, Coll Geomat, Xian 710054, Peoples R China; [Zhou, Hongkui] Zhejiang Acad Agr Sci, Inst Digital Agr, Hangzhou 310021, Peoples R China
推荐引用方式 GB/T 7714	Geng, Guangpo,Zhou, Hongkui,Wang, Tao. Assessing the relationship between drought and vegetation dynamics in northern China during 1982-2015[J],2022.
APA	Geng, Guangpo,Zhou, Hongkui,&Wang, Tao.(2022).Assessing the relationship between drought and vegetation dynamics in northern China during 1982-2015.THEORETICAL AND APPLIED CLIMATOLOGY.
MLA	Geng, Guangpo,et al."Assessing the relationship between drought and vegetation dynamics in northern China during 1982-2015".THEORETICAL AND APPLIED CLIMATOLOGY (2022).