大气污染扩散空间信息系统

Study on Spatial Information System of Air Pollutant Dispersion

将ＧＩＳ（ 地理信息系统） 引入大气多源扩散研究领域，成功地解决了ＧＩＳ 与大气污染扩散数据的连接问题，实现了大气污染扩散数据的计算机图形可视化与计算机一次成图的功能。在此基础上开发了一套带ＧＩＳ 图形处理和分析功能的大气污染扩散空间信息系统软件包，该软件包对传统的Ｇ－ Ｈ 面源模式进行了改进工作，提高了其计算速度及计算精度。对线源模式进行了研究，提高了其计算速度及计算精度，解决了在普通微机上实现线源污染扩散的计算问题。

Geographic information system (GIS) succedssfully linked to air pollutant diffusion data was introduced to the field of multi source air diffusion,which realized the functions of computerized visualization of air pollutant diffusion data and direct cartography.On the basis of this,an air pollution diffusion spatial information system software package was developed with the functions of GIS graphic processing and analysis.The package improved the traditional G-H model of area source and enhanced the computation speed and accuracy.The line source mode was also improved with increased computation speed and accuracy,thus realizing the use of PC for line source pollution diffusion modeling.