Method for simulating spatial and temporal migration trend distribution of organic pollutants

The embodiment of the invention discloses a method for simulating the spatial and temporal migration trend distribution of organic pollutants and relates to the field of organic pollutant migration distribution simulation. The method comprises the following steps that: S1, a database is established; S2, grid division is performed on a research area; S3, a four-level escape model is established, specifically, an escape calculation formula, a Z value calculation formula, a D value calculation formula and an advection calculation formula are integrated, and the formulas are programmed through a Matlab programming platform; and S4, four-stage multi-medium escape model simulation is performed by adopting the four-stage escape model and on the basis of advection rules. According to the method, spatial heterogeneity is solved by gridding the research area; a set of independent parameter files is configured for each grid and is corresponding to years in which simulation is performed, and therefore, the method more co