江苏省县域城镇建设用地效率时空特征及驱动因子识别

Spatial-Temporal Characteristics and Driving Factor Identification of Urban Construction Land Efficiency in Counties of Jiangsu Province

综合运用Bootstrap-DEA模型、探索性空间数据分析和地理加权回归,揭示2010—2016年江苏省54个县市单元城镇建设用地效率时空特征及其影响因素的空间异质性.研究表明:(1)2010—2016年,江苏省县域城镇建设用地综合效率、纯技术效率和规模效率均呈现持续增长态势,区域间建设用地效率呈现苏南>苏中>苏北的空间态势.(2)县域城镇建设用地综合效率及分解效率均整体呈现空间集聚趋势,且局部空间格局演变表现为综合效率热点多在苏南,呈“趋同俱乐部”格局,冷点集中在苏北,南北差异显著;纯技术效率总体格局具有一定变化,热点总体趋向苏南地区集中;规模效率总体格局变化相对较大,热点分布主体锁定在苏州、无锡、常州和南京.(3)县域城镇建设用地综合效率地理空间分异格局被验证为人口集聚、经济效应、科技创新、政府调控、对外开放等多重因子非线性共轭作用的结果.研究结论反映了江苏省城镇建设用地效率格局及影响因素状况,为制定土地调控政策提供了借鉴.

Using Bootstrap-DEA model,exploratory spatial data analysis and geographical weighted regression,the spatial and temporal characteristics of urban construction land efficiency in 54 counties and cities of Jiangsu Province from 2010 to 2016,and the spatial heterogeneity of influencing factors were revealed.The results show that:(1)from 2010 to 2016,the comprehensive efficiency,pure technical efficiency and scale efficiency of urban construction land efficiency in counties of Jiangsu Province show a continuous growth trend,and the inter-regional construction land efficiency shows a spatial trend of Southern Jiangsu>Central Jiangsu>Northern Jiangsu.(2)The comprehensive efficiency and decomposition efficiency of urban construction land efficiency in counties show a trend of spatial agglomeration on the whole,and the evolution of local spatial pattern shows that the focus of comprehensive efficiency is mainly in the south of Jiangsu,showing a pattern of“convergence club”,while the cold spots are concentrated in the north of Jiangsu,with a significant difference between the north and the south;The overall pattern of pure technical efficiency has some changes,and the hot spots tend to be concentrated in the south of Jiangsu.The overall pattern of scale efficiency changes relatively large,the hot spots are locked in Suzhou,Wuxi,Changzhou and Nanjing.(3)The geographical spatial differentiation pattern of urban construction land comprehensive efficiency in counties has been verified as the result of non-linear conjugation of multiple factors such as population agglomeration,economic effects,technological innovation,government regulation,and opening up.The conclusion of the study reflects the efficiency pattern and influencing factors of urban construction land efficiency in Jiangsu Province,and provides a reference for formulating land control policies.