Ecological risk evaluating method of urban system

A technology of ecological risk and evaluation method, which is applied in the field of ecological risk evaluation of urban systems, and can solve problems that have not yet been involved in urban system ecological risk evaluation methods

Inactive Publication Date: 2010-07-14
BEIJING NORMAL UNIVERSITY
View PDF3 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patents retrieved above are related to risk assessment and environmental risk assessment, and have not yet involved the ecological risk assessment method of urban systems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ecological risk evaluating method of urban system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Below in conjunction with the examples, the specific implementation of the present invention will be further described in detail. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] An embodiment of the present invention provides an ecological risk assessment and zoning method of an urban system, the steps of which include:

[0023] (1) Select the administrative area of ​​City X as the research area, and collect city-by-year data (Table 1). Assuming that there are m kinds of chemical pollutants to be studied, the physical and chemical property parameters of each pollutant are collected (Table 1), for example, the molecular weight of the i-th pollutant can be expressed as M i .

[0024] Table 1 Data to be collected

[0025]

[0026] (2) The model structures of the fugacity method and the isobaric concentration method are similar, and the main difference lies in the propertie...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an ecological risk evaluating method of an urban system. The method comprises the following steps of: (S1) acquiring year-by-year data information of an urban area to be researched and determining a pollutant used as a chemical risk source; (S2) establishing a class III multi-media fugacity / equivalent concentration model; (S3) estimating according to the year-by-year data information to obtain a model parameter and substituting the model parameter into the model to obtain a calculating value of pollutant concentration; (S4) obtaining a predicted value of the model parameter in a researched time segment according to the obtained year-by-year model parameter; (S5) substituting the model parameter predicted value into the model to obtain a pollutant concentration predicted value; and (S6) acquiring a predicted value of urban ecological risks brought by chemical pollutions. The ecological risk evaluating method of an urban system obtains the predicted values of time sequences and space distribution based on past and current ecological risk change conditions, serves for an implementation process of urban ecological planning and is helpful to formulating and implementing more scientific and reasonable urban ecological planning.

Description

technical field [0001] The invention relates to the fields of environmental science and urban ecological planning, in particular to an ecological risk assessment method for urban systems. Background technique [0002] The urban ecosystem is a complex system with human as the core. Human beings are not only the builders of the urban system, but also live in the urban system. With the acceleration of urbanization on a global scale, a series of ecological problems caused by urbanization have gradually emerged, which have and will further threaten the health of cities and natural ecosystems. All kinds of pollution (air, water, solid waste), resource shortage, flood, heat island effect, etc. have become ecological risks that affect the health of urban ecosystems. Urban ecological risk assessment is the main means of comprehensive analysis of various ecological risks existing in the urban system. Urban ecological risk assessment and zoning results can provide the status quo and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G06Q90/00
Inventor 徐琳瑜宋慧敏杨志峰王磊
Owner BEIJING NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap