Accessibility of Park Green Space in the Main Urban Area of Lanzhou City Based on Improved Ga2SFCA
Taking the central city of Lanzhou as the research object,the nuclear density analysis was applied to reveal the spatial layout characteristics of parks and green spaces,and the improved Ga2SFCA model was used to evaluate the accessibility of different types of parks.The results show that the accessibility of parks in the central urban area is characterized by the distribution of"high in the north and low in the south,high in the west and low in the east".The accessibility of all types of parks generally shows the common characteristic of"high in the west and low in the east",and the degree of compatibility between various types of parks and the needs of the population varies due to the differences in their categories,sizes and service scopes.Based on the results,recommendations are provided for the allocation of park green space resources and the improvement of the quality of the stock of green space in Lanzhou.
kernel density analysisimproved Ga2SFCAaccessibility analysiscountermeasure proposal