Study of Spatial Morphological Evolution and Typological Control in Sanjie Liangxiang,Nanning
WEI Hanyu
SHAO Yiran
CHEN Jiaxin
LI Minzhi
WANG Guoguang
Abstract：This study emphasizes the value of spatial structural analysis in conserving and renewing urban districts.It provides a feasible technological path and decision support system by shifting control strategies from experience-based judgments to quantitative reasoning.
During their morphological evolution,historic urban districts face challenges such as weakening spatial structures and ambiguous street and alley textures.These challenges have given rise to an urgent need for typology-based morphological control strategies.The Central Urban Work Conference held in July 2025 emphasized the importance of"urban connotative development"and"urban renewal as a key initiative"while stressing the principle of"adopting differentiated guidance in accordance with local conditions".This means that exploring differentiated governance paths and achieving multiple goals related to cultural continuity and spatial restructuring have become critical to promoting high-quality urban development in the new era of urban renewal,because historic urban districts are carriers of urban space and cultural narratives,including classification identification,structural optimization,and functional integration.
Based on the Conzenian collaborative analysis of urban morphology and space syntax,the study established a research path of"type identification-syntax support-classified control"that aimed to implement the principles of connotative development and differentiated guidance.The results can provide some practical references for spatial structural optimization and refined renewal of historic urban districts.Using the Sanjie Liangxiang historic district in Nanning as a case study,the morphological evolution characteristics and influencing factors of spaces from 1950 to 2020 were analyzed.Their logical relationships were investigated based on space syntax analysis.The spatial structures' differentiated optimization strategies were then proposed by combining spatial morphological analysis and the space syntax results.In this way,the regulatory priorities and control approaches across different areas were clarified,and the spatial logic of historic urban districts within the urban system was disclosed.
Specifically,the research first examines the evolution of spatial morphology from four dimensions:block structure,plot type,building layout,and street network.It identifies key structural features and trends,revealing the multi-dimensional collaborative paths under the influence of policy guidance,market-driven forces,and social adaptation.Second,space syntax is employed to quantify changes in spatial structure and their logical relationships,further confirming the continuous role of government,market,and society in shaping morphological evolution.Finally,the research area is divided into key control units,guiding control units,and general control units by integrating area structure,plot type,building layout,and space syntax analysis results.The differentiated morphological control strategies are proposed in accordance with the historical values,structural potentials,and renewal needs of different areas.
A limitation of this study is that it pays insufficient attention to micro-level social behavior mechanisms.The resident participation and long-term evolutionary process should be further analyzed.In the future,dynamic studies on society-space interaction in the historic urban districts can be expanded by combining them with behavioral surveys and multi-source data,aiming to offer more robust theoretical foundations and practical strategies for refined renewal and human-oriented design.
Keywords：historical urban districtSanjie Liangxiang historic district Nanningspatial morphological evolutionConzenian urban morphologySpace Syntax
Publication Date：2025-09-30
Online Publishing Date：2025-10-20(First online date of this platform, not the publication date of the document)
Pages：10( 36-45 )