基于空间失序理论的城市街道空间品质大规模测度 ——以合肥市二环内为例

摘要　随着城市建设提质优化以及人们对美好生活的追求，空间品质成为城市研究中的重要组成部分。但近年来经济 的高速发展，城市空间出现失序。以合肥市二环内区域为案例，以街景图像等多源数据为载体，采用非现场建成环境 审计等技术方法，探索合肥市空间失序现象以及不同类型的街道与空间失序程度的关系。结果表明合肥市二环内：（1） 整体空间破败程度为35.11%；（2）空间失序要素中以沿街商业要素的失序程度最为严重；（3）商业服务业设施用 地街道（B 类）空间品质最差，物流仓储用地（W 类）街道空间品质优质。基于空间失序理论，大规模测度街道空间 品质的优劣，在实践上能为未来城市的精细化管理提供重要依据；在理论研究上尝试弥补以往国内城市地理对空间失 序研究的空缺。

Large-scale Measurement of the Quality of Urban Street Space Based on Physical DisorderTheory: A Case Study of Area within the Second Ring of Hefei City

Abstract　 With improvements and optimization in the field of urban construction and people's pursuit of a higher quality of life, spatial quality has become an important aspect of urban research. However, rapid developments in the Chinese economy in recent years have caused disordered local urban space. In this study, area within the second ring of Hefei City was used as the research object, and multi-source data (e.g., street view images) were applied as carriers. On this basis, the physical disorder phenomenon, the relationship between different street types and the degree of physical disorder in Hefei City were explored through technical methods such as virtual built-environment audit. For area within the second ring road of Hefei City, the results revealed as following: (1) for the overall spatial quality, the degree of physical disorder was 35.11%; (2) among the spatial features explored, the commercial elements along the street presented the highest disorder degree; and (3) the quality of the space along the streets of land servicing commercial-industry facilities (Class B) was the worst, while the quality along the streets of logistics and storage land (Class W) was the best. Based on physical disorder theory, this study quantitatively measured the quality of street space. In practice, these findings provide important insights toward improving the urban management of cities in the future. In theory, they address the limitations of current research into physical disorder in China's urban space.