干旱区生态环境知识资源中心(Arid): Quantifying the contribution of climate change and human activities to surface drought in Qinghai, northeastern Qinghai-Tibetan Plateau

Arid

DOI	10.1007/s00704-024-04983-x
	Quantifying the contribution of climate change and human activities to surface drought in Qinghai, northeastern Qinghai-Tibetan Plateau
	Qin, Gexia; Wang, Ninglian; Wu, Yuwei; Zhou, Sugang; Meng, Zhiyuan
通讯作者	Wang, NL
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
ISSN	0177-798X
EISSN	1434-4483
出版年	2024
卷号	155 期号:7 页码:6099-6117
英文摘要	Quantifying the change of drought and their driving mechanisms is essential for monitoring land surface environmental changes and for understanding the land-atmosphere interaction in the arid region. Most researches are limited to average climate change, whereas the response analysis of extreme climate, the interaction of different climate factors and human activities to changes in drought are still lacking or not comprehensively considered. Firstly, we employed the temperature vegetation dryness index (TVDI), which associates land surface temperature with vegetation cover, to explore the spatiotemporal variation of drought across seasons in Qinghai province. Then, we specifically quantify the contribution of different climate factors and human activities to surface drought. Our findings revealed that drought exhibited upchange covering 73.71% in spring, 19.32% in summer, and 89.25% in winter, while autumn witnessed an decreasing trend in TVDI, with a rate of decrease exceeding 0.005 per year. Notably, drought in the meadow region was primarily influenced by average climate change. In the shrub-tussock region, extreme climate factors predominantly affected drought during spring and winter, whereas average climate change played a greater role during summer and autumn. The sensitivity of drought to temperature was greater than precipitation during spring and autumn, whereas the reverse was observed during summer and winter. In the steppe, swamp, and desert region, drought was mainly driven by average climate change during spring but by extreme climate events during summer, autumn, and winter. Furthermore, we discovered that the interaction between any two climate factors had a stronger explanatory power for the spatial distribution of drought in the steppe and desert region. The effect of the interaction between any two environmental factors on the TVDI was greater than that of a single climate factor. In summary, our study demonstrated significant spatiotemporal variations in the response of drought to different environmental factors across various grassland types and seasons, highlighting the importance of considering the interactions between environmental factors in understanding drought dynamics.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001220460600001
WOS关键词	VEGETATION ; REGION
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/2XILL650/405789
推荐引用方式 GB/T 7714	Qin, Gexia,Wang, Ninglian,Wu, Yuwei,et al. Quantifying the contribution of climate change and human activities to surface drought in Qinghai, northeastern Qinghai-Tibetan Plateau[J],2024,155(7):6099-6117.
APA	Qin, Gexia,Wang, Ninglian,Wu, Yuwei,Zhou, Sugang,&Meng, Zhiyuan.(2024).Quantifying the contribution of climate change and human activities to surface drought in Qinghai, northeastern Qinghai-Tibetan Plateau.THEORETICAL AND APPLIED CLIMATOLOGY,155(7),6099-6117.
MLA	Qin, Gexia,et al."Quantifying the contribution of climate change and human activities to surface drought in Qinghai, northeastern Qinghai-Tibetan Plateau".THEORETICAL AND APPLIED CLIMATOLOGY 155.7(2024):6099-6117.