多源空间数据整合视角下的城市开发强度研究

城市开发强度能直观表征人类活动强度，对指导城市规划与管理、促进城市可持续发展具有重要价值。采用社会-经济-生态系统耦合视角构建城市开发强度的多维测度体系，整合多源空间数据，测度了杭州市主城及3个副城的开发强度并揭示了其空间分布特征。结果表明，杭州城市开发强度由主城向副城呈波动降低，高强度开发过度集中于主城，主城的功能疏散有待加强；各副城开发强度不一，江南城与主城呈现跨江融合，临平城、下沙城空间上较为独立；各开发维度中，建筑强度、功能强度及效益强度热点区分布基本一致，环境响应高强度区则集聚于主副城交界处，表现出空间异质性。多维测度体系可较好表征城市开发强度，对城市规划及精细化管理具有一定的应用价值。

Measuring urban development intensity based on the integration of multi-source spatial data

Urban development intensity can directly indicate human activities intensity, which provides valuable information on instructing urban planning and sustainable development. This paper developed a multidimensional measuring system of urban development intensity from a perspective of social, economic, and ecological coupling system. The urban development intensity of the center and three sub-centers in Hangzhou was measured to uncover the spatial characteristics based on the integration of multi-source spatial data. Results indicated that the urban development intensity in Hangzhou declined from the center to the sub-centers. The high intensity development was mainly occurred in the city center, which implied that evacuation function needs to be further enhanced in the main center. Moreover, the development intensity of each sub-center in was different. Jiangnan sub-center and the center represented a cross-river integration, while Linping sub-center and Xiasha sub-center were spatially independent. The hotspot distribution of building intensity, intensity and output intensity were consistent, while the area with high environmental responding intensity was concentrated in the boundary between the center and the sub-centers, which exhibited spatial heterogeneity. The developed multidimensional measuring system by integrating multi-source spatial data has a great potential for characterizing urban development intensity, which is valuable for improving urban planning and management in a detailed manner.