Park green land site selection optimization method based on urban impact factors

The invention relates to a park green land site selection optimization method based on urban impact factors. The method comprises the steps of collecting park green land information, an urban built-up area range, urban land data, urban house data and green land planning data; analyzing the park green land information to obtain service coverage data, and performing superposition erasure analysis on the service coverage data and the urban house data to obtain uncovered house roof data; performing overlay analysis by utilizing the potential grid surface and uncovered house roof data, the urban house data and the greenbelt planning data to sequentially obtain a pre-served house area, a to-be-demolished house area and a greenbelt planning judgment result, and recording the results as three index parameters; performing normalization processing and probability distribution function processing of a normal distribution function on the three index parameters to obtain scores of the three index parameters in sequence; w