Ecological service efficacy evaluation method based on urban land utilization

The invention discloses an ecological service efficacy evaluation method based on urban land utilization, and belongs to the technical field of urban planning. The method mainly comprises the following steps: acquiring urban ecosystem data of a target area; remote sensing images in five time periods are collected, the classification precision of the remote sensing images is larger than or equal to 90%, and land is classified after field evaluation; dividing the urban land into square grids by means of an ArcGIS fishing net tool, and then respectively calculating the area of each land utilization type in each grid unit; according to the average actual grain yield per unit area of the five time periods, comparing the average actual grain yield per unit area of the whole country in the same period to obtain a correction coefficient of the ecosystem service equivalent; and obtaining the service value of the urban ecosystem according to the corrected value equivalent and various land utilization areas. According t