Landscape Service of Small and Micro Public Spaces from the Perspective of Landscape Scheduled Affordances

Objective Urban governance in the context of urban renewal pays more attention to small and micro public spaces. From the perspective of landscape service,this research quantitatively analyzes the capacity of landscape service of micro and small public spaces to support leisure activities by accurately matching the outdoor leisure needs of space users, with a view to providing reference for constructing a matching mechanism between subjective attributes of the scheduled affordances of leisure activities and the types of leisure activities.Methods Taking the small and micro spaces in Heping District of Tianjin as the research object and point of interest(POI) data and OSM(OpenStreetMap)data as the optimization basis, this research, based on high-resolution remote sensing images(HRRS), positions and identifies small and micro spaces at the macro scale. Focusing on the environmental user paradigm from the perspective of landscape scheduled affordances, the research adopts the public space &public life survey(PSPL) and the public space index(PSI) methods to determine the landscape scheduled affordances and the supply capacity of landscape leisure functions of small and micro spaces, thus obtaining the evaluations on the overall landscape service capacity of micro and small spaces in Heping District.Results The above methodology yields the following three main findings:spatial location and spatial scale information of 75 micro and small spaces in Heping District, Tianjin, and evaluation on their support capacity for leisure activities; evaluation on the scheduled affordances of landscape leisure activities in micro and small spaces based on the environmental and subjective attributes; and proportion and distribution of the types of leisure activities supported by the five supportive aspects of subjective attributes in different types of micro and small spaces.Conclusion The research concludes that:The 5-minute accessibility of the 75 micro and small spaces is poor, the noise risk is small, and the landscape continuity is uneven; the scheduled affordances of leisure activities is incomplete in 58 out of the 75 micro and small spaces, with a completeness rate of only 24%; and the types of activities compatible with micro and small spaces in parks or squares or along streets are available. This research may propose leisure function adaptation programs for micro and small spaces with different subjective attributes, and provide reference for governance of urban micro and small spaces.