关中平原耕地利用生态效率时空演化及驱动因素分析OA

As a key grain-producing region in western China,the Guanzhong Plain requires a critical balance be-tween preserving the nation's food security and sustainable land use.This study employed county-level panel da-ta from 2013 to 2022 to evaluate the ecological efficiency of cultivated land use using the Super-SBM model in-corporating undesirable outputs.Spatial autocorrelation analysis and the Geodetector method were applied to sys-tematically investigate the spatiotemporal evolution of ecological efficiency and its underlying driving mecha-nisms.The results reveal a distinct"U-shaped"temporal trajectory in ecological efficiency,accompanied by a spatial gradient pattern characterized by higher efficiency in the central region,followed by the west.Meanwhile,the east saw lower efficiency.High-efficiency clusters were primarily concentrated in Xi'an and Xianyang and exhibited a trend of westward diffusion.Meanwhile,Tongchuan and Weinan remained in persistently low-effi-ciency states.Significant spatial agglomeration was also observed,with high-efficiency clusters expanding south-ward from Qian County and low-efficiency clusters consistently located in the eastern plain.This spatial heteroge-neity of ecological efficiency has been shaped by a synergistic interplay of natural,socioeconomic,and policy-re-lated factors.The influence of variables like annual precipitation and elevation demonstrated dynamic temporal variability,while the positive effects of urbanization rate and per capita disposable income of rural residents re-vealed a sustained upward trend.The interactions among these multidimensional factors yielded pronounced rein-forcing effects on ecological efficiency.