气候变化领域集成服务门户(CCPortal): Warming and increasing precipitation induced greening on the northern Qinghai-Tibet Plateau

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DOI	10.1016/j.catena.2023.107483
	Warming and increasing precipitation induced greening on the northern Qinghai-Tibet Plateau
	Shi, Shangyu; Wang, Ping; Zhan, Xiaoyun; Han, Jianqiao; Guo, Minghang; Wang, Fei
发表日期	2023
ISSN	0341-8162
EISSN	1872-6887
卷号	233
英文摘要	The Qinghai-Tibet Plateau (QTP) has a fragile ecosystem that is sensitive to climate change. Due to the amplifying effect of climate change, the QTP has experienced rapid warming and shifting precipitation in recent decades, profoundly impacting the local ecosystem. However, the specific details of how vegetation responds to these changes were unclear, and the corresponding contributions were poorly quantified. Here, we employed an elastic net regression model to investigate the sensitivity of vegetation to climate factors across multiple time scales and various seasons. The vegetation activity was represented by the enhanced vegetation index (EVI), while climate change was represented by temperature, precipitation, photosynthetically active radiation (PAR), and soil moisture fraction (SMF). During 2000-2020, approximately 50 % of the QTP area showed greening, mainly concentrated in the northern region. Climate change explained approximately 70 % of the variation in vegetation during the growing season, 39 % in spring and 66 % in autumn. Grasslands exhibited the highest sensitive to climate change, with a relative contribution of 83 %, followed by mixed forests (70 %), forests (53 %) and deserts (52 %). Both temperature and precipitation significantly affected vegetation, with relative contributions of 29 % and 22 %, respectively, during the growing season. PAR and SMF had less impact on vegetation, with relative contributions of 8 % and 12 %, respectively. In the greening region, precipitation (26 %) was more important for vegetation growth compared to temperature (25 %). These findings emphasize the importance of precipitation on vegetation on the QTP, providing valuable insights for improving regional ecosystem assessment model and promoting the restoration of fragile ecosystems.
关键词	Qinghai-Tibet Plateau Vegetation greening Climate change Multiple time scales
英文关键词	CLIMATE-CHANGE; TERRESTRIAL ECOSYSTEMS; SOIL-MOISTURE; ALPINE ECOSYSTEMS; PERMAFROST DEGRADATION; VEGETATION GROWTH; SEMIARID REGION; LAND-SURFACE; TEMPERATURE; MODIS
WOS研究方向	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:001074366400001
来源期刊	CATENA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282711
作者单位	Northwest A&F University - China; Ministry of Water Resources; Chinese Academy of Sciences; Institute of Soil & Water Conservation (ISWC), CAS; Chinese Academy of Sciences; Institute of Geographic Sciences & Natural Resources Research, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Northwest A&F University - China; Chinese Academy of Sciences; Institute of Soil & Water Conservation (ISWC), CAS
推荐引用方式 GB/T 7714	Shi, Shangyu,Wang, Ping,Zhan, Xiaoyun,et al. Warming and increasing precipitation induced greening on the northern Qinghai-Tibet Plateau[J],2023,233.
APA	Shi, Shangyu,Wang, Ping,Zhan, Xiaoyun,Han, Jianqiao,Guo, Minghang,&Wang, Fei.(2023).Warming and increasing precipitation induced greening on the northern Qinghai-Tibet Plateau.CATENA,233.
MLA	Shi, Shangyu,et al."Warming and increasing precipitation induced greening on the northern Qinghai-Tibet Plateau".CATENA 233(2023).