新型城镇化、乡村振兴与生态文明建设战略导向的县域空间多功能优化

Counties serve as a crucial intermediary in advancing new urbanization, rural revitalization, and ecological civilization construction in China. As the research scale shifts downward, the interactions among these strategic goals have become increasingly complex, necessitating a systematic optimization from the perspective of spatial multifunctional coordination. This study associated the three core functions—urban development, rural revitalization, and ecological protection—with the corresponding three major national strategic initiatives and, drawing on the concept of the “maturity model diagram,” constructed a theoretical framework and evaluation system for analyzing county-level spatial multifunctionality at the micro-scale. Taking Shanting District of Zaozhuang City as the study area and using a 500-m grid as the basic evaluation unit, this study conducted an empirical analysis based on multi-source data, employing comprehensive index evaluation, a triangular model, and Exploratory Spatial Data Analysis methods. The results revealed that: ① Single-dimensional functional evaluation showed significant spatial differentiation in the composite functional indices across grids. While the three functions overlapped in certain areas, clear trade-offs and synergies existed among them. ② In the multifunctional trade-off and synergy analysis, areas dominated by a single function accounted for a small proportion and were scattered, while dualfunction dominant areas occupied the largest share, mainly concentrated in urban centers and along transport corridors. Multi-function dominant areas were relatively limited, showing a diffusion pattern from the core to the periphery. ③ From the perspective of spatial clustering, single-function dominant areas showed localized aggregation but overall fragmentation; dual-function dominant areas formed contiguous high-value clusters; and multi-function dominant areas displayed a polarized pattern, with evident local clustering yet pronounced overall heterogeneity. Based on the coordination between the developmental stage of each spatial unit and its neighboring functions, this study constructed a “Four-Quadrant Growth Model,” revealing the evolution of county-level multifunctional spaces and offering theoretical insights for promoting urban-rural coordination and optimizing agricultural and ecological layout.