干旱区生态环境知识资源中心(Arid): Impacts of multiple temporal and spatial scale drought on grassland vegetation dynamics in the Tibetan Plateau region of China, 1982-2015

Arid

DOI	10.1016/j.envdev.2024.101033
	Impacts of multiple temporal and spatial scale drought on grassland vegetation dynamics in the Tibetan Plateau region of China, 1982-2015
	Wang, Licheng
通讯作者	Wang, LC
来源期刊	ENVIRONMENTAL DEVELOPMENT
ISSN	2211-4645
EISSN	2211-4653
出版年	2024
卷号	51
英文摘要	The Tibetan Plateau is a sensitive area to global climate change, and the special natural environmental conditions have nurtured extremely fragile vegetation and its ecosystems, making it one of the ideal regions to study the response of vegetation to climate change. In this study, we used the drought index (SPEI) and the vegetation index (NDVI) as drought and green indicators, respectively. The spatial and temporal variation patterns of vegetation greenness on the Tibetan Plateau from 1982 to 2015 were analysed, and the response of vegetation greenness to dry and wet changes was investigated. The results showed that the grassland vegetation improved overall (slope = 0.00015, P < 0.05) and degraded locally during 34 years. The NDVI of grassland vegetation showed an increasing trend from 1982 to 2008 (slope = 0.00005, P = 0.86), and a significant decreasing trend from 2009 to 2015 (slope =-0.002, P < 0.05). The degraded areas of grassland NDVI were mainly distributed in wet areas. Meanwhile, the Tibetan Plateau as a whole showed a non-significant trend of increasing drought, with a mitigating trend of drought in dry areas and an increasing trend of drought in wet areas. The probability of vegetation growth loss was higher with increasing drought. The vulnerability of grassland vegetation to drought events was significantly higher in the humid region than in the arid region. Under the current drought intensification, the risk of loss of grassland vegetation to drought in the humid zone will increase. This suggests that we need to pay more attention to the stability of vegetation in the humid region and drought trends.
英文关键词	Grassland vegetation Drought index Copula function
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001279340500001
WOS关键词	SOIL-MOISTURE ; HOT EXTREMES ; TRENDS ; NDVI ; VULNERABILITY ; ARIDITY ; INDEX ; MODIS
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/2XILL650/403544
推荐引用方式 GB/T 7714	Wang, Licheng. Impacts of multiple temporal and spatial scale drought on grassland vegetation dynamics in the Tibetan Plateau region of China, 1982-2015[J],2024,51.
APA	Wang, Licheng.(2024).Impacts of multiple temporal and spatial scale drought on grassland vegetation dynamics in the Tibetan Plateau region of China, 1982-2015.ENVIRONMENTAL DEVELOPMENT,51.
MLA	Wang, Licheng."Impacts of multiple temporal and spatial scale drought on grassland vegetation dynamics in the Tibetan Plateau region of China, 1982-2015".ENVIRONMENTAL DEVELOPMENT 51(2024).

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