乡镇街道尺度国土“三生”空间功能评价及协调关系

乡镇街道尺度国土“三生”空间功能评价及协调关系研究更面向国土空间优化过程中的人本需求导向和基层精细化治理。研究提出“分维功能评价—协调水平测算—作用方向判别”的整套思路框架。其中，兼顾空间隶属和空间质量双重属性构建“三生”空间功能综合评价指标体系，运用耦合协调模型和双变量空间自相关模型探究功能间协调水平及各自对整体协调的作用方向，并以苏州市为例进行实证分析。结果表明：（1）所构建分析框架、指标体系及技术方法路径具有科学性和普适性特点，能够在乡镇街道尺度有效识别“三生”空间功能分布格局和空间协调关系。（2）在乡镇街道尺度的较高标准约束下，苏州市“三生”空间功能具有较显著城乡差异和区域差异，且“三生”空间功能协调整体水平呈现“大分散、小集聚”的分布特征，协调水平主要受生产、生活空间功能同向作用，生态空间功能的协同作用不足、多呈现反向关系。（3）从城区、乡镇、生态单元等不同空间类型提升“三生”空间综合功能，完善基层国土空间治理的精细化，在更大尺度上实现“三生”空间的整体协调，构建功能复合、风貌相宜、协调共进的国土空间格局。

Study on the evaluation of the spatial function and coordination relationship of the territorial "production-living-ecological" spaces at the township-street scale

The research on the evaluation of territorial "production-living-ecological" spatial functions and the coordination relationship at the township-street scale is more oriented towards humanistic demand and grassroots refined governance support in the process of territorial spatial optimization. This study proposeed a whole set of thinking framework of "fractal dimension function evaluation-coordination level measure-action direction judgment". Among them, the dual attributes of space membership and space quality were considered to construct a comprehensive evaluation index system for the "production-living-ecological" spatial functions. The study then used the coupling coordination model and the bivariate spatial autocorrelation model to explore the level of coordination between functions and their respective directions for overall coordination, by taking Suzhou as an example. The results showed that: (1) The constructed theoretical framework, index system and technical method path have good scientificity and universality, and can effectively identify the spatial function distribution pattern and spatial coordination relationship of the "production-living-ecological" spaces at the township-street level. (2) Under the constraints of the higher standards of township-street scale, the "production-living-ecological" spatial functions in Suzhou had significant urban-rural differences and regional differences, and the overall level of coordination of the "production-living-ecological" spatial functions was low, showing a distribution pattern of "large dispersion and small agglomeration". Besides, the overall coordination level was mainly affected by the co-direction effect of production and living space functions, and the lack of synergy of ecological space functions showed a reverse-direction effect. (3) Promoting the comprehensive function of "production-living-ecological" spaces from different spatial types such as urban areas, townships and ecological units, improving the refined governance of grassroots territorial spaces, and realizing the overall coordination of "production-living-ecological" spaces at a larger scale can build a territorial spatial pattern with multiple functions, appropriate landscapes and coordinated progress.