Adaptive analysis of green space network planning for the cooling effect of residential blocks in summer: a case study in Shanghai

Authors: Danran Song*, East China Normal University, Yunfang Jiang, East China Normal University, Tiemao Shi, Shenyang Jianzhu University, Xuemei Han, East China Normal University
Topics: Urban and Regional Planning, Planning Geography, Urban Geography
Keywords: Adaptive planning; Cooling effect; ENVI-met; Numerical simulation; Residential block; Shanghai
Session Type: Paper
Day: 4/7/2019
Start / End Time: 2:00 PM / 3:40 PM
Room: Marshall North, Marriott, Mezzanine Level
Presentation File: No File Uploaded

Based on the cooling effect of planning control elements in residential block areas, the element effects characteristics of water bodies and vegetation distribution on the thermal environment of residential blocks were analyzed by using ENVI-met software. The simulation data analysis showed that the combination of water bodies and vegetation had a synergistic cooling effect. Based on these results, simulations of 5 effective adaptive measures were carried out step by step in planning scenarios, that is, improving the water bodies with vegetation corridors, the application of high-albedo material on streets, and increasing the number of green patches, east-west green corridors and north-south green corridors. The results were as follows. First, although each of the 5 optimization strategies have a certain degree of cooling effect on the entire block, the superposition of each factor had a synergistic effect. Second, different spatial optimization strategies had different cooling ranges for each sub-zone. The optimization of the north-south green corridor, green patches and water features corridors is particularly significant for microclimate cooling. The east-west green corridor has a certain influence on a certain range of downwind zones and had an auxiliary cooling effect. The high-albedo material also had a weak overall decrease function for the thermal environment. Finally, the downwind area of the urban creek network had a great impact on cooling intensity, with distance attenuation characteristics. The optimization scenario planning research provided a method for improving the scientific distribution of adaptation measures in urban residential blocks.

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