The Study on Evolutive Model of Heavy Metal Pollution in Urban Surface Soil and Design of Time-Series Database

Abstract

In order to study how the heavy metal pollution disseminates in urban surface soil and to recognize its evolutive pattern, this paper provides a model with time variable based on Euler method which could avoid the shortcoming of the traditional constant time assumption. We establish a set of spatial-temporal equations and derive their analytical solutions by 3-order Fourier transform.