文献类型：期刊文献

英文题名：Analyzing the Driving Forces of Vegetation Change in the Yellow River Basin: Comprehensive Assessment of Natural Social and Economic Factors

作者：Gao, Fei[1,2,3] Yang, Ying[1,2] Yuan, Weijie[1,2] Deng, Xiuxiu[1,2] Wang, Lina[1,2] Zhang, Shuai[1,2]

第一作者：Gao, Fei

通信作者：Zhang, S[1];Zhang, S[2]

机构：[1]Chinese Acad Forestry, Expt Ctr Forestry North China, Beijing 102300, Peoples R China;[2]Natl Permanent Sci Res Base Warm Temperate Zone Fo, Beijing 102300, Peoples R China;[3]Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China

年份：2026

卷号：15

期号：4

外文期刊名：PLANTS-BASEL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001700156500001)】；

基金：This research was funded by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2022MA009, CAFYBB2024QF037) and Sub-project of the National Key Research and Development Program of China (2024YFD2201104-4).

语种：英文

外文关键词：leaf area index; driving mechanisms; Geographically and Temporally Weighted Regression; ecological restoration

摘要：Leaf area index (LAI) is a key vegetation structural parameter widely used to quantify vegetation dynamics. A thorough understanding of its spatiotemporal characteristics and driving mechanisms is essential for sustainable ecosystem management. This study combines LAI and climate remote sensing data with socioeconomic statistics, and uses the Geographically and Temporally Weighted Regression (GTWR) model and geographic detector to identify the key drivers of LAI changes and their spatial differentiation characteristics. The results indicate a significant upward trend in the LAI across the basin, with a markedly higher growth rate after 2000 (0.0123/year) compared to the period before 2000 (0.0028/year). Spatially, before 2000, 57% of the regions showed an increasing trend in LAI, while after 2000, 69% of the regions exhibited an increasing trend in LAI. In terms of temporal LAI dynamics, in the eastern region, the positive promotion effect of the Grain for Green policy (GRGR) was the most significant factor affecting LAI changes. In the central region, the employed population ratio (EPR) emerged as the dominant factor driving LAI increase. In the western region, the negative effect of the urban-rural income ratio (IR) served as the primary driver of LAI change. Regarding the spatial distribution of LAI, both natural and policy factors were statistically significant. Mean precipitation (MP) and mean slope (MS) exerted the most pronounced influences, followed by mean temperature (MT) and GRGR, whereas mean elevation (MD) showed the weakest effect. Notably, socioeconomic factors did not demonstrate statistically significant impacts on the spatial distribution of LAI. This study provides a theoretical foundation for understanding the driving mechanisms of LAI dynamics in the Yellow River Basin and offers scientific support for ecological restoration and sustainable management in the region.