京津冀土地绿色利用效率时空格局及影响因素

Spatio-temporal Pattern of Green Land Use Efficiency in Beijing-Tianjin-Hebei and Its Influencing Factors

[目的]探索京津冀土地绿色利用效率时空格局与影响因素,为推动土地利用绿色发展转型、促进国土空间开发保护格局优化提供理论参考。[方法]以京津冀为研究区域,构建土地绿色利用效率评价指标体系,运用SBM-DEA模型、探索性空间数据分析(ESDA),揭示京津冀土地绿色利用效率时空格局特征,并采用Tobit多元回归模型探讨其影响因素。[结果](1)2008年以来,京津冀土地绿色利用效率整体呈上升趋势,尤其是2012年以来明显上升,达到有效状态。(2)空间上呈现“中间高四周低”的空间非均衡性特征,京津两市处于高效率中心,且全域空间正相关性显著且不断增强,局域空间集聚特征明显,邻近城市间效率值关联特征显著。(3)经济发展、生态环境治理对土地绿色利用效率提升具有显著的正向影响,经济发展水平影响最为突出,而土地城镇化、人口集聚体现为明显的负向影响。[结论]加快促进京津冀绿色发展转型,进一步深化京津冀协同发展,着力提高低效率区域的经济发展水平。建议加强优化国土空间开发保护格局,实施严格的土地利用制度,加强土地生态系统修复与维护,差异化制定土地绿色利用效率提升举措,全面推动土地绿色利用效率提升。

[Objective]This paper explores the spatial-temporal pattern and influencing factors of green land use efficiency in Beijing-Tianjin-Hebei,and provides theoretical reference for promoting the green development and transformation of land use and optimizing the spatial development and protection pattern of land.[Methods]Taking Beijing-Tianjin-Hebei as the research area,we constructed a land green utilization efficiency evaluation index system,used the SBM-DEA model and exploratory spatial data analysis(ESDA)to reveal the characteristics of spatial and temporal patterns of land green utilization efficiency in Beijing-Tianjin-Hebei,and explored the influencing factors by using the Tobit multiple regression model.[Results](1)Since 2008,the overall green land use efficiency in Beijing-Tianjin-Hebei has been on the rise,especially since 2012,which has reached an effective state.(2)The spatial non-equilibrium characteristics of“high in the middle and low in the surroundings”are shown in the space,with Beijing and Tianjin in the high-efficiency centers,and the positive spatial correlation in the whole area is significant and increasing,the local spatial agglomeration characteristics are obvious,and the efficiency value correlation characteristics among the neighboring cities are significant.(3)Economic development and ecological governance have a significant positive impact on the improvement of land green use efficiency,with the level of economic development having the most prominent impact,while land urbanization and population agglomeration reflect a significant negative impact.[Conclusion]It should accelerate the promotion of the green development transition in Beijing-Tianjin-Hebei,further deepen the Beijing-Tianjin-Hebei synergistic development,and focus on improving the level of economic development in inefficient regions.It is recommended that the optimization of the spatial development and protection pattern of land be strengthened,a strict land-use system be implemented,the restoration and maintenance of land ecosystems be strengthened,and initiatives to improve the efficiency of the green use of land be formulated in a differentiated manner,so as to comprehensively promote the improvement of the efficiency of green land use.