[Dynamic Evolution and Influencing Factors of Urban Land Green Use Efficiency in the Yangtze River Delta from the Perspective of "Pollution Reduction and Carbon Reduction"].

Abstract

Scientific exploration of the spatiotemporal characteristics and influencing factors of urban land green use efficiency from the perspective of "pollution reduction and carbon reduction" has great significance for achieving sustainable regional resource utilization. Taking the Yangtze River Delta Region as an example and using the period from 2003 to 2022 as the study period， this paper incorporates environmental indicators into a super-efficiency SBM model with "desirable output + undesirable output" to measure the urban land green use efficiency in the region. By employing methods such as kernel density estimation， Theil-Sen trend analysis， and panel fixed effects models， this study comprehensively analyzes the spatiotemporal evolution characteristics and influencing factors of urban land green use efficiency in the Yangtze River Delta. The study yields several important results： ① Over the study period， the urban land green use efficiency in the Yangtze River Delta Region shows an overall upward trend， with regional disparities exhibiting a divergent pattern. ② The urban land green use efficiency in the Yangtze River Delta Region generally presents a spatial pattern of higher efficiency in the east and lower efficiency in the west， with significant increases in efficiency in most cities during the study period. ③ The expansion of urban economic scale， industrial structure upgrading， and technological advancement significantly promote green efficiency of land use. Based on these findings， this paper suggests strengthening regional coordinated development， enhancing urban economic scale， upgrading industrial structure， and improving the technological level to improve urban land green use efficiency. The conclusions of this study provide theoretical references for the formulation and adjustment of regional development policies and the green and high-quality development of regional economies.