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Establishment of the Forecasting System of Trans-boundary Heavy Pollution Accidents Based on GIS

Author: HouZuo
Tutor: YouHong
School: Harbin Institute of Technology
Course: Environmental Science and Engineering
Keywords: Straddling GIS Major pollution incident Early warning system
CLC: X321
Type: Master's thesis
Year: 2010
Downloads: 139
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Abstract

In recent years, major water pollution accident occurred frequently brought serious damage to the ecological environment and the health of persons, transboundary water pollution accidents and even caused a diplomatic dispute between the countries, the impact of China's international image. Therefore, to strengthen the management of transboundary rivers, to prevent the occurrence of such an accident, has become a focus of environmental protection work. In this context, this paper established straddling a major water pollution incident early warning system to provide an effective tool for risk management and emergency decision. Based on the pressure - state - response model, in a wide range of cross-border water pollution accident, and the uncertainty characteristics Unlike water pollution accident, to build a cross-border water pollution accident warning indicator system. Selection of individual indicators to follow good accuracy, operability principle, and in consultation with a number of experts scoring for individual indicators, using the analytic hierarchy process to determine the weight of the indicators. As a reference to relevant literature and finalize the grading system of cross-border water pollution accident police intelligence. According to police intelligence scores, the water pollution accident is divided into four levels: general water pollution accident, the larger water pollution accident, serious water pollution accidents, especially serious water pollution accidents. This article is divided into three parts: the overall design of the cross-border early warning system of major water pollution accident warning map production, map operations control, data management and maintenance. Production to use ArcMap completed warning thematic maps, the late map the network released convenience. Tool customization features, the use of the ArcIMS web publishing components in accordance with its own characteristics of the system and the special needs of their own customized map operation control tools. Design and straddling a major water pollution accident geo-spatial database using ArcSDE as middleware, vector data transmission in the oracle database. Based on a comprehensive analysis of the data needs of the entire system, the establishment of a cross-border early warning system of major water pollution accident. This system can realize the basic information query and browsing warning thematic maps querying and browsing including environmentally sensitive receptor thematic maps, along the major towns and cities maps, an important water intake / water source maps, maps of risk source; including the characteristic pollutant risk field maps, the characteristic pollutant concentration field maps and integrated police intelligence level display warning thematic maps. System data, update, delete plug diversion is also available through the system client management and maintenance. With real-time, objective, specific understanding of the pollution after the accident in the Songhua River basin straddling the establishment of early warning systems of major water pollution accident, the country and the environmental protection department, emergency expert group decision-making command provides scientific basis.

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