基于GIS的多污染因子复合地面浓度场模拟与评价

Simulation and evaluation of ground concentration complex multi-environment factor based on GIS

针对工业大气多因子复合作用的污染物连续地面浓度分布和评价问题,提出了一种基于GIS的地面浓度场模拟和综合评价的新方法,该方法将大气污染物扩散高斯模式和大气质量综合污染指数评价模型在GIS中有机集成,实现了污染物分布空间信息的显示和分析。通过将此方法应用于某一化工厂污染源不同气象条件下污染扩散分析计算,结果表明此种方法简单实用,特别是对多污染因子复合作用的综合评价模型具有任意空间分辨精度,可以满足不同分级需求。

According to the concentration distribution on the ground and the evaluation of the industrial air always acted by the multi-pollution factors a new simulation and evaluation method is presented based on the geographic information （GIS）. The method of the Gaussian model The Gaussian model of the atmospheric dispersion of the pollutants and the air quality model evaluation of the integrated pollution index is organically integrated in the GIS. The spatial distribution of the pollutants has information display and analysis. The method is applied to the analysis of the pollution concentration＇ s distribution of a chemical plant under different weather conditions. The result shows that the method is simple and practical. It meets the need of different classification, especially for the complex multi-environment factor comprehensive evaluation model which has arbitrary spatial resolution precision.