气候变化领域集成服务门户(CCPortal): Analysis of Vegetation Dynamics and Driving Mechanisms on the Qinghai-Tibet Plateau in the Context of Climate Change

CCPortal

DOI	10.3390/w15183305
	Analysis of Vegetation Dynamics and Driving Mechanisms on the Qinghai-Tibet Plateau in the Context of Climate Change
	Chang, Yinghui; Yang, Chuncheng; Xu, Li; Li, Dongfeng; Shang, Haibin; Gao, Feiyang
发表日期	2023
EISSN	2073-4441
卷号	15 期号:18
英文摘要	The Qinghai-Tibet Plateau (TP) is susceptible to climate change and human activities, which brought about drastic alterations in vegetation on the plateau. However, the trends and driving mechanisms of vegetation changes remain unclear. Therefore, the normalized difference vegetation index (NDVI) was used to analyze the spatiotemporal distribution of vegetation and the consistency of dynamic trends in the TP from 2000 to 2020 in this study. The independent contributions and interactive factors of natural and human activities on vegetation changes were investigated through the Geodetector model. The drivers of vegetation under different dry-wet zones and precipitation gradients were quantitatively separated, and the internal mechanisms of vegetation changes were discussed from multiple perspectives. The results showed that from 2000 to 2020, the NDVI had an overall increasing trend, with an increasing rate of 0.0027 a-1, and the spatial pattern was different, increasing gradually from the northwest to the southeast. Consistent improvement occurred in the central and southeastern parts of the TP, while the western and northern parts consistently deteriorated. The annual mean precipitation had the greatest explanatory power for vegetation changes (0.781). The explanatory power of the integrated effects between two factors was greater than that of individual factors. The integrated effects between annual mean precipitation and other driving factors had the strongest explanatory power on vegetation variations. The driving mechanisms of vegetation dynamics varied among different dry-wet zones, and the vegetation growth was more sensitive to the response of precipitation in arid and semi-arid climate zones. This study enhances our understanding of the intrinsic mechanisms of vegetation changes on the plateau, which can provide a reference for ecological conservation, and has implications for further prediction and assessment of vegetation ecosystem stability.
关键词	NDVI vegetation dynamics geodetector model influencing factors Qinghai-Tibetan Plateau
英文关键词	3-RIVER HEADWATERS REGION; GEOGRAPHICAL DETECTOR; TEMPORAL VARIATIONS; INNER-MONGOLIA; MODIS NDVI; RIVER; COVER; LAND; TEMPERATURE; TREND
WOS研究方向	Environmental Sciences ; Water Resources
WOS记录号	WOS:001072551700001
来源期刊	WATER
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283247
作者单位	China University of Geosciences - Wuhan; China University of Geosciences - Wuhan; China University of Geosciences - Wuhan
推荐引用方式 GB/T 7714	Chang, Yinghui,Yang, Chuncheng,Xu, Li,et al. Analysis of Vegetation Dynamics and Driving Mechanisms on the Qinghai-Tibet Plateau in the Context of Climate Change[J],2023,15(18).
APA	Chang, Yinghui,Yang, Chuncheng,Xu, Li,Li, Dongfeng,Shang, Haibin,&Gao, Feiyang.(2023).Analysis of Vegetation Dynamics and Driving Mechanisms on the Qinghai-Tibet Plateau in the Context of Climate Change.WATER,15(18).
MLA	Chang, Yinghui,et al."Analysis of Vegetation Dynamics and Driving Mechanisms on the Qinghai-Tibet Plateau in the Context of Climate Change".WATER 15.18(2023).