Land space overall planning population scale decomposition method

The invention discloses a land space overall planning population scale decomposition method. The method comprises the following steps: determining the total residential building scale of a planning area; constructing a density distribution reference model, a correction model and an expansion model; constructing a factor evaluation index system of the density distribution reference model; performing spatial evaluation on the condition factors in each unit to obtain a reference model density partition; optimizing the density partition of the reference model to obtain a complete density partition result; determining the reference plot ratio of the residential building in each density partition; calculating the residential building scale of each unit; the residential building scale of each unit is corrected; calculating the population scale of each unit according to the corrected unit residential building scale, the general residential building scale and the general population; the method can achieve the precise