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.
Highlights
Introduction of Research AreaThe main watershed of Liyang is the Shahe Reservoir of Tianmu Lake and Daxi Reservoir and its tributaries
This paper introduces the construction process of the model, the integration of the model with geographic information system (GIS), the interactive application of the system and users and the visual dynamic expression of water pollution accidents
In order to realize the organic combination of GIS with water quality, water quantity and terrain in the river basin and a series of models, Water Resources Research Center of Dublin College, National University of Ireland, has developed the DSS.CWM decision support system [3] for water management in the river basin, providing the functions of inquiry and analysis of water quality and prevent the emergence of sudden water pollution accidents
Summary
Water resources are the basic resources of social and economic development, and the source of human life. In order to realize the organic combination of GIS with water quality, water quantity and terrain in the river basin and a series of models, Water Resources Research Center of Dublin College, National University of Ireland, has developed the DSS.CWM decision support system [3] for water management in the river basin, providing the functions of inquiry and analysis of water quality and prevent the emergence of sudden water pollution accidents. Taking Liyang City of Jiangsu Province as an example, this paper chooses the finite difference water quality model which is most suitable for the hydrological characteristics of the basin, develops a surface water quality monitoring and water pollution diffusion analysis and simulation system suitable for county and municipal environmental protection applications, realizes the simulation visualization of the temporal and spatial distribution of sudden water pollution accidents in rivers and reservoirs and constitutes basic information , decision-making and human-computer interactions supporting the emergency treatment of sudden water pollution accidents scientifically, efficiently and accurately
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