基于信息熵与数据包络分析的长三角三大都市圈国土空间开发绩效评价

Performance evaluation of territorial spatial development in three major metropolitan areas of Yangtze River Delta based on information entropy and data envelopment analysis

摘要

国土空间开发绩效是区域高质量发展的重要测度,如何通过提升其水平以促进都市圈协调发展,已成为当前亟待探讨的重要课题。本研究综合运用信息熵模型与数据包络分析(DEA)方法,构建“结构有序性-利用效率”双维评价框架,以上海、南京、杭州三大发展成熟且特点各异的都市圈为研究对象,以区县为基本单元进行绩效评价。结果表明:1)三大都市圈国土空间结构呈现“核心低熵→外围高熵→远郊中低熵”的圈层式分布特征,其中上海都市圈呈现多核结构,南京与杭州都市圈则为单核结构;2)土地利用效率空间分异明显,呈现“核心效率最佳→近郊技术有效→远郊规模有效→外围效率较低”的梯度规律,其中上海都市圈整体效率较高,南京与杭州都市圈则以规模有效为主;3)部分承担重要功能定位的区域在效率上具有较大提升潜力,未来应着力通过产业升级与资源整合,强化其核心功能与区域协同作用。研究从“结构-效率”耦合视角揭示了都市圈国土空间开发的空间分异规律与优化路径,为长三角区域国土空间优化与协同发展提供可借鉴的分析范式与决策依据。

Abstract

The performance of territorial space development is an important indicator for the high-quality development of regions.How to enhance its level to promote the coordinated development of metropolitan areas has become an important issue that needs to be explored urgently now.This study comprehensively employs the information entropy model and the Data Envelopment Analysis (DEA) method to construct a two-dimensional evaluation framework of "structural orderliness-utilization efficiency",and takes the three mature metropolitan areas with distinct characteristics in Shanghai,Nanjing,and Hangzhou as the research objects,conducting performance evaluations at the county-level basic units.The results show:1) The territorial space structure of the three metropolitan areas presents a "core low entropy → periphery high entropy → far suburbs medium-low entropy" circular distribution feature.Among them,Shanghai metropolitan area shows a multi-core structure,while Nanjing and Hangzhou metropolitan areas have a single-core structure; 2) The spatial differentiation of land use efficiency is obvious,presenting a "core efficiency is the best → near suburbs are technologically effective → far suburbs are scale-effective → peripheral efficiency is relatively low" gradient pattern.Among them,the overall efficiency of Shanghai metropolitan area is relatively high,while Nanjing and Hangzhou metropolitan areas mainly rely on scale-effect; 3) Some regions that undertake important functional positioning have great potential for efficiency improvement.In the future,efforts should be made to strengthen their core functions and regional synergy through industrial upgrading and resource integration.This study reveals the spatial differentiation patterns and optimization paths of territorial space development in metropolitan areas from the perspective of "structure-efficiency coupling",providing a reference analytical model and decision-making basis for the optimization and coordinated development of territorial space in the Yangtze River Delta region.

关键词

信息熵 / 数据包络分析 / 都市圈 / 国土空间开发绩效

Key words

information entropy / data envelopment analysis / metropolitan area / territorial spatial development performance

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基金资助

国家自然科学基金(42101017);中国地质调查局东北地质科技创新中心区创基金项目(QCJJ2022-23)