面向蓝绿空间网络的青岛市南区绿地布局及绿道选线

Green Space Layout and Greenway Route Selection in Shinan District of Qingdao for Green and Blue Space Network

为了进一步优化沿海地区的蓝绿空间网络,选取典型滨海山地区域(青岛市南区)为研究对象,提取308处自然资源和173处文化资源的代表性样点,运用ArcGIS空间模型对其绿地空间布局类型、空间分布格局、分布密度进行分析,并运用成本连通性模型确定市南区最低成本路径的优化网络,提出面向蓝绿空间网络连接的复合型游憩绿道选线方法和规划建议。结果表明:青岛市南区绿地空间布局呈凝聚型分布,且形成7个绿地集群;市南区绿地空间分布模式主要为依附型、支撑型、扩散型3类,且具有明显的绿地空间自相关性;识别出1条一级绿道、3条二级绿道、38条三级绿道构成理想的蓝绿空间网络图。研究结果将为识别我国沿海地区资源特征,形成完善的绿色基础设施和蓝色廊道的空间衔接提供参考。

In order to further optimize the blue-green spatial network in the coastal area,a typical coastal mountainous area(Shinnan District,Qingdao)is selected to determine 308 sample sites with representative natural resources and 173 sites with representative cultural resources.The spatial layout types,spatial distribution patterns and distribution density of the green spaces in the sties are analyzed using ArcGIS spatial model,and the cost connectivity model is applied to determine the optimal network with the lowest-cost paths in the Shinnan District,so as to propose the route selection method and planning recommendations for compound recreation greenway,which will contribute to the connection of blue and green spatial networks.The study finds that the green space in the southern part of the District is cohesively distributed,forming seven green clusters.There are three types of distribution patterns of green spaces,i.e.,dependent,supportive and diffusive,presenting obvious spatial autocorrelation of green spaces.One primary greenway,three secondary greenways and 38 tertiary greenways are identified for an ideal blue-green spatial network map.The results would provide references for the identification of resources characteristics along the coastal regions and the formation of spatial connection between green infrastructures and blue corridors.