Method for evaluating river basin accumulation environment risks

A technology of environmental risk and watershed, applied in the field of environmental risk and management, environmental science, can solve the problems of weak evaluation and spatial research, and achieve a wide range of applications
CN102364508AInactive Publication Date: 2012-02-29BEIJING NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING NORMAL UNIVERSITY
Publication Date
2012-02-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

Aiming at the characteristics of various risk sources, upstream and downstream accumulation, complex and multiple risk receptors and the like of river basin environment risks, the invention discloses a method for evaluating river basin accumulation environment risks on the basis of GIS (Geographic Information System) technology effective insertion components. The method comprises the following steps of: firstly, with a chemical engineering park along the river within a river basin range as an environment risk evaluation point source, quantifying environment risk source dangers through relevant quantitative models such as a fire model (Exergy); secondly, establishing a GIS space accumulation model, coupling a river basin dispersion one-dimensional water quality mode, calculating a river basin environment risk accumulation field, acting the river basin environment risk accumulation field on a service range of a water taking hole through the water taking hole; thirdly, evaluating the vulnerability of an environment acceptor along the river; and finally, determining the level of the region risks through risk strengths and operation results of acceptor vulnerability evaluation levels, and generating a river basin environment risk ranking graph on the basis of a space display function of a GIS. The method can be widely applied to regional environment risk evaluation, regional industry layout plan, soil utilization plan, environment risk management, and formulation of pollution accident prevention measures and emergence plans, and has the characteristics of high efficiency, low cost, high precision, wide appliance range and the like.
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Description

technical field

[0001] The invention relates to the fields of environmental science, environmental risk and management, in particular to a method for comprehensively evaluating the cumulative environmental risk of a river basin by using GIS and Excel technology. This evaluation method can be widely used in regional industrial layout planning, land use planning and environmental risk management, as well as the formulation of pollution accident prevention measures and emergency plans. Background technique

[0002] With the continuous expansion of the degree and scale of my country's industrialization, industrial development on a regional scale has become a new growth point of my country's economy. my country's regional development model usually takes industry, especially the chemical industry as the leading industry, and economic development zones or industrial parks as the carrier. However, in the process of rapid industrialization, the discharge of a large number of toxic a...

Claims

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