气候变化领域集成服务门户(CCPortal): Impacts of hydrometeorological controls on vegetation productivity: Evidence from satellite observations and reanalysis

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DOI	10.1016/j.ecolind.2024.111976
	Impacts of hydrometeorological controls on vegetation productivity: Evidence from satellite observations and reanalysis
	Liu, Yangxiaoyue; Wang, Yang; Yang, Yaping; Jiang, Hao; Jing, Wenlong
发表日期	2024
ISSN	1470-160X
EISSN	1872-7034
起始页码	161
卷号	161
英文摘要	Climate change notably boosts terrestrial hydraulic redistribution pattern, which could directly affect the spatiotemporal evolution characteristics of vegetation productivity. However, the spatiotemporal evolution pattern of long-term hydrometeorological controls of vegetation productivity is still not fully understood. This paper comprehensively explored the impacts of hydrometeorological controls on leaf area index (LAI) and gross primary productivity (GPP) in China during 1982 - 2015 using both satellite observations and reanalysis. Vapor pressure deficit (VPD), evapotranspiration (ET), precipitation (PT), and soil moisture (SM) were used as representative indicators during investigation. The dynamics of LAI and GPP displayed increasing trends on the whole. And significantly changes mostly occurred in eastern and southern China, accompanied by moderate to dense vegetation coverage. An accelerated increasing trend for LAI could be observed since September 2003 ( +0.175 per decade), while the growth rate of GPP ( +16.76 g C/m 2 per decade) basically maintained stable. In terms of hydrometeorological controls, VPD and ET showed consistently increasing trend and SM presented falling trend in the context of warming climate. Through analysis of feature importance index established by Random Forest, the importance of VPD, SM, and PT obviously increased as latitude decreases, which implied the high sensitivity of vegetation in semi-humid\humid regions to water availability. Additionally, divergence between LAI and GPP can be found in southern Tibet Plateau region and coastal regions, which provides compelling evidence that in the case of high LAI, increasing LAI could weaken the improvement effect on GPP. Findings of this study is expected to promote the understanding of long-term vegetation responses to hydrometeorological variations.
英文关键词	Leaf area index; Gross primary productivity; Vapor pressure deficit; Evapotranspiration; Precipitation; Soil moisture
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS记录号	WOS:001222395400001
来源期刊	ECOLOGICAL INDICATORS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/309053
作者单位	Chinese Academy of Sciences; Chinese Academy of Sciences; Guangdong Academy of Sciences; Guangzhou Institute of Geography, Guangdong Academy of Sciences
推荐引用方式 GB/T 7714	Liu, Yangxiaoyue,Wang, Yang,Yang, Yaping,et al. Impacts of hydrometeorological controls on vegetation productivity: Evidence from satellite observations and reanalysis[J],2024,161.
APA	Liu, Yangxiaoyue,Wang, Yang,Yang, Yaping,Jiang, Hao,&Jing, Wenlong.(2024).Impacts of hydrometeorological controls on vegetation productivity: Evidence from satellite observations and reanalysis.ECOLOGICAL INDICATORS,161.
MLA	Liu, Yangxiaoyue,et al."Impacts of hydrometeorological controls on vegetation productivity: Evidence from satellite observations and reanalysis".ECOLOGICAL INDICATORS 161(2024).