气候变化领域集成服务门户(CCPortal): Dual Influence of Climate Change and Anthropogenic Activities on the Spatiotemporal Vegetation Dynamics Over the Qinghai-Tibetan Plateau From 1981 to 2015

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DOI	10.1029/2021EF002566
	Dual Influence of Climate Change and Anthropogenic Activities on the Spatiotemporal Vegetation Dynamics Over the Qinghai-Tibetan Plateau From 1981 to 2015
	Wei, Yanqiang; Lu, Haiyan; Wang, Jinniu; Wang, Xufeng; Sun, Jian
通讯作者	Wei, YQ (通讯作者)
发表日期	2022
EISSN	2328-4277
卷号	10 期号:5
英文摘要	Climate change and human activities have already caused degradation in a large fraction of vegetation on the Qinghai-Tibetan Plateau (QTP). Many studies report that climate variability instead of overgrazing has been the primary cause for large-scale vegetation cover changes on the QTP, for example, Lehnert et al., 2016, . However, it remains unclear how human activities (mainly livestock grazing) regulate vegetation dynamics under climate change. This paper takes the AVHRR/GIMMS Normalized Difference Vegetation Index (NDVI) as an indicator to analyze the growth status of vegetation zones in the QTP, which has highly sensitive to climate change. The spatiotemporal dynamics of vegetation growth between 1981 and 2015 were analyzed. The dual effects of climate change and human activities were examined by correlation analyses of data from 87 meteorological stations and economic statistical data of the QTP. Results show that: (a) The vegetation in central and southwestern QTP with high altitudes was improving due to the warm-humid climate trend. An increase in temperature and a reduction in the harsh frigid climate at high altitudes due to global warming has resulted in expansions of the vegetated areas, with the NDVI showing a concordant increase. (b) The degraded areas were mainly confined to the northern and eastern QTP, which have high human and livestock population densities. In comparison to gently changing climate regimes, anthropogenic activities such as chronic concentration of population and livestock in the valleys with a less harsh climate exerts a much stronger pressure on vegetation. The study indicates that the anthropogenic pressures are much more intensive than the impact of climate change and are critical for the conservation and sustainable management of the QTP vegetation.
关键词	INDUCED LAND DEGRADATION PHOTOSYNTHETIC TRENDS ALPINE GRASSLAND NORTH-AMERICA VARIABILITY PERMAFROST IMPACT CHINA ELEVATION GLACIER
英文关键词	vegetation dynamics; anthropogenic activities; climate change; Qinghai-Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000798080000001
来源期刊	EARTHS FUTURE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260634
推荐引用方式 GB/T 7714	Wei, Yanqiang,Lu, Haiyan,Wang, Jinniu,et al. Dual Influence of Climate Change and Anthropogenic Activities on the Spatiotemporal Vegetation Dynamics Over the Qinghai-Tibetan Plateau From 1981 to 2015[J]. 中国科学院青藏高原研究所,2022,10(5).
APA	Wei, Yanqiang,Lu, Haiyan,Wang, Jinniu,Wang, Xufeng,&Sun, Jian.(2022).Dual Influence of Climate Change and Anthropogenic Activities on the Spatiotemporal Vegetation Dynamics Over the Qinghai-Tibetan Plateau From 1981 to 2015.EARTHS FUTURE,10(5).
MLA	Wei, Yanqiang,et al."Dual Influence of Climate Change and Anthropogenic Activities on the Spatiotemporal Vegetation Dynamics Over the Qinghai-Tibetan Plateau From 1981 to 2015".EARTHS FUTURE 10.5(2022).