Service Range and Optimized Layout of Urban Parkland in Jianghan District of Wuhan Based on GIS

The analysis of the service range and optimized layout of urban parkland through scientific methods is conducive to urban ecological environment, urban fabric and stable order to provide accessible recreational places for residents. This paper took Jianghan District in Wuhan for example, based on the GIS network analysis and vector databases of road network, park and population, to obtain the irregular service range of different types of park and bearing capacity. The results showed that the service range of daily recreation within 20 min accounted for 75.5% of the total area, and the bearing capacity of Lingjiaohu Park, Wangjiadun Park, and Longwangmiao Park was low. It was thus concluded that there were visible blind areas and invisible blind areas in Jianghan District. Therefore, specific optimized layout of parkland was implemented in different blind areas to effectively combine park green space and residents' recreational activities, so as to achieve reasonable layout of urban parkland.