基于POI数据的建设用地多功能混合利用空间分异研究

建设用地多功能混合利用对提升区域用地效率、增进国土空间效能具有重要意义。论文构建基于生产—生活—生态空间(即三生空间)的建设用地多功能混合利用分析框架,以济南市为研究区,采用POI数据,利用熵模型、景观格局分析和关联规则挖掘方法,探究土地混合利用的空间分异特征。结果显示,研究区建设用地混合利用以生产空间、生产—生活空间和生活空间为主;核心城区的建设用地混合利用度较高,而生产、生活空间集中连片,生态空间嵌入不足;乡村地区景观的破碎化特征明显,以生产—生活空间引领的建设用地混合利用度较低;产业园区的生活—生态空间在网络中处于边缘位置,加强园区内部规划与周边区域形成互补的生活、生态空间,是实现园区土地可持续利用的关键。关联规则的分析结果表明,科学的生产空间规划是优化混合利用的重要抓手,而合理的生态空间布局对带动区域建设用地混合利用起着关键作用。研究基于POI数据,从行为空间互动理论视角探究建设用地多功能混合规律,丰富了现有土地混合利用理论与方法体系,也为土地利用政策制定及城市空间格局优化提供了科学依据。

Spatial differentiation of multi-functional mixed use of construction land based on points of interest

Mixed land use is of great significance for improving the efficiency of use of regional land and territorial space. A framework for analyzing and optimizing multi-functional mixed use of construction land based on production-living-ecological space was developed in this study. Based on the point of interest (POI) data, entropy model, landscape pattern analysis, and association rules mining were applied to explore the spatial differentiation of mixed land use, taking Jinan City as the study area. The results show that the main types of mixed use of construction land in the city are production space, production-living space, and living space. The degree of mixed utilization of the core urban area is high, the production and living spaces are concertrated and connected, however, the ecological space is not embedded enough. The landscape fragmentation in the rural areas is obvious, and the mixed use led by production and living space is weak. The living-ecological space in the industrial parks is in a very marginal position in the network. Strengthening the internal planning of the parks or forming a complementary living and ecological space with the surrounding areas is the key to realize the sustainable development of the parks. The research of association rules shows that reasonable production space planning is an important way to guide and optimize the mixed land use. At the same time, strengthening the rational use of ecological space plays an important role in promoting mixed land use. Based on the POI data, this study explored the patterns of multi-functional combination of construction land from the perspective of behavioral spatial interaction theory, which enriches the existing land mixed use theory and methods and provides a theoretical basis for land use policy making and spatial pattern optimization.