Simulation of Water Pollution Diffusion Based on WebGIS

Abstract

Taking Liyang City of Jiangsu Province as the research object, a water pollution accident diffusion simulation and analysis system, taking WebGIS as the core, was established by taking finite difference method to do the system dynamics water quality model solution. This paper introduces the construction process of the model, the integration of the model with GIS, the interactive application of the system and users and the visual dynamic expression of water pollution accidents. By combining the statistical analysis of the spatial and environmental database in the system, the scientific simulation of the temporal and spatial relationship of the development of water pollution accidents on the client side is realized and providing precise decision support for early warning and control of water pollution diffusion. 1. Research Background Water resources are not only the basic resources of social and economic development , but also the source of human life. However, in the past decade, due to the acceleration of industrialization and urbanization, sudden water pollution incidents have occurred frequently in China, seriously threatening the surface water ecosystem and urban water supply security. However, the water environment system is a complex dynamic evolution system, which continuously exchanges material and energy with outside world. By using the geographic information system (GIS) based on the geospatial database, this system not only completes the real-time query and analysis of water quality basics, but also realizes the visual expression of sudden water pollution accidents through its spatial How to cite this paper: Kuang, T.Q., Du,