Impact of land use transition on ecosystem services in the Yangtze River economic belt and associated mechanism
摘要
Land-use transition (LUT) driven by urbanization plays a crucial role in shaping regional ecosystem services, yet its spatial interactions with ecosystem service change and the underlying causal pathways remain unclear. In this study, we examine the relationship between land-use transition and total ecosystem services (TES) in the Yangtze River Economic Belt (YREB) from 2005 to 2020 by integrating spatial autocorrelation analysis, multiscale geographically weighted regression and spatial econometric models. We find significant positive spatial autocorrelation between land-use patterns and ecosystem services across the study period. The relationship between land-use structure and TES shows marked spatial and temporal heterogeneity: positive coupling first strengthened and then weakened before shifting to strong negative coupling, indicating a reversal from spatial synergy to spatial conflict. By contrast, land-use intensity and land-use dynamics were consistently negatively coupled with TES, suggesting a persistent spatial mismatch. Spatial econometric models further show that land-use structure is positively associated with TES, whereas land-use intensity and land-use dynamics are negatively related to TES. Spillover effects vary across transition dimensions, with land-use intensity is positively related to ecosystem services in neighboring areas, land-use dynamics shows a significant negative spillover association, and land-use structure shows no significant spillover association. These findings reveal the scale-dependent and spatially heterogeneous mechanisms through which LUT affects ecosystem services, and suggest that land-management policies in the YREB should account for both local impacts and cross-regional spillovers.