气候变化领域集成服务门户(CCPortal): Decoupling the response of vegetation dynamics to asymmetric warming over the Qinghai-Tibet plateau from 2001 to 2020

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DOI	10.1016/j.jenvman.2023.119131
	Decoupling the response of vegetation dynamics to asymmetric warming over the Qinghai-Tibet plateau from 2001 to 2020
	Xu, Binni; Li, Jingji; Pei, Xiangjun; Yang, Hailong
发表日期	2023
ISSN	0301-4797
EISSN	1095-8630
卷号	347
英文摘要	Global land surface air temperature data show that in the past 50 years, the rate of nighttime warming has been much faster than that of daytime, with the minimum daily temperature (Tmin) increasing about 40% faster than the maximum daily temperature (Tmax), resulting in a decreased diurnal temperature difference. The QinghaiTibet Plateau (QTP) is known as the roof of the world, where temperatures have risen twice as fast as the global average warming rate in the last few decades. The factors affecting vegetation growth on the QTP are complex and still not fully understood to some extent. Previous studies paid less attention to the explanations of the complicated interactions and pathways between elements that influence vegetation growth, such as climate (especially asymmetric warming) and topography. In this study, we characterized the spatial and temporal trends of vegetation coverage and investigated the response of vegetation dynamics to asymmetric warming and topography in the QTP during 2001-2020 using trend analysis, partial correlation analysis, and partial least squares structural equation model (PLS-SEM) analysis. We found that from 2001 to 2020, the entire QTP demonstrated a greening trend in the growing season (April to October) at a rate of 0.0006/a (p < 0.05). The spatial distribution pattern of partial correlation between NDVI and Tmax differed from that of NDVI and Tmin. PLS-SEM results indicated that asymmetric warming (both Tmax and Tmin) had a consistent effect on vegetation development by directly promoting greening in the QTP, with NDVI values being more sensitive to Tmin, while topographic factors, especially elevation, mainly played an indirect role in influencing vegetation growth by affecting climate change. This study offers new insights into how vegetation responds to asymmetric warming and references for local ecological preservation.
关键词	Vegetation dynamics Asymmetric warming Topography Partial least squares structural equation model (PLS-SEM)The qinghai-tibet plateau (QTP)
英文关键词	NET PRIMARY PRODUCTION; TIME-SERIES DATA; GREEN-UP DATES; CLIMATE-CHANGE; ALPINE GRASSLAND; ANTHROPOGENIC ACTIVITIES; SPRING PHENOLOGY; LEAF RESPIRATION; LAND-COVER; TEMPERATURE
WOS研究方向	Environmental Sciences
WOS记录号	WOS:001092970000001
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283183
作者单位	Chengdu University of Technology; Chengdu University of Technology; Chengdu University of Technology
推荐引用方式 GB/T 7714	Xu, Binni,Li, Jingji,Pei, Xiangjun,et al. Decoupling the response of vegetation dynamics to asymmetric warming over the Qinghai-Tibet plateau from 2001 to 2020[J],2023,347.
APA	Xu, Binni,Li, Jingji,Pei, Xiangjun,&Yang, Hailong.(2023).Decoupling the response of vegetation dynamics to asymmetric warming over the Qinghai-Tibet plateau from 2001 to 2020.JOURNAL OF ENVIRONMENTAL MANAGEMENT,347.
MLA	Xu, Binni,et al."Decoupling the response of vegetation dynamics to asymmetric warming over the Qinghai-Tibet plateau from 2001 to 2020".JOURNAL OF ENVIRONMENTAL MANAGEMENT 347(2023).