[Spatiotemporal Pattern of Ecological-economic Coupling Coordination Degree and Spatiotemporal Heterogeneity of Influencing Factors in National Key Ecological Functional Zones in Sichuan Province， China].

Achieving a balance between ecological conservation and economic development is essential for regional coordination and sustainable development. This study examines 56 national key ecological function counties （cities） in Sichuan Province， employing a coupling coordination model to assess the current state and dynamic evolution of ecological-economic coupling coordination. Temporal analysis， trend surface analysis， and spatial autocorrelation analysis are utilized to delineate spatiotemporal evolution patterns， while a geographically and temporally weighted regression （GTWR） model is applied to explore influencing factors and spatiotemporal heterogeneity. The results indicate that： ① The coupling coordination degree generally fell within the range of 0.4-0.5 （mild imbalance） and 0.5-0.6 （primary coordination）， exhibiting a U-shaped trend of initial decline followed by subsequent improvement. ② High coordination areas were mainly concentrated in the eastern and southern regions of Sichuan Province， with an expanding north-south disparity. ③ Spatial correlation of the coupling coordination degree weakened initially before strengthening， revealing significant spatial heterogeneity and regional clustering characteristics. ④ Key influencing factors， including river network density， road network density， government intervention， industrial structure， and population density， displayed pronounced spatiotemporal heterogeneity. These findings suggest that while the alignment between ecological protection policies and economic development strategies in Sichuan's national key ecological function areas is strengthening， regional disparities remain prominent. Therefore， targeted policies should be formulated based on local conditions to achieve a sustainable synergy between environmental conservation and economic growth.