Urban scale ecological red line delimiting method

Abstract

The invention relates to the field of ecological protection, in particular to a method for delimiting urban-scale ecological red lines. The invention discloses a method for delimiting the urban-scale ecological red line. Starting from the center of the city, taking the circular area with increasing radius as the research object, it is found that the proportion of the area where the ecological system service is extremely important is greater than that of the overall urban research area. The area that is higher than the average value is designated as the ecological protection red line area. The present invention can calculate an ecological red line that is concrete, feasible, easy and quick to operate, highly visualized, and can roughly represent urban development, and can roughly evaluate the encroachment of areas with high importance to ecosystem services by the development and expansion of cities at the present stage To grasp the bottom line of ecological protection of a city's development from a macro perspective.

Description

technical field [0001] The invention belongs to the field of ecological protection, and in particular relates to a method for delimiting urban-scale ecological red lines. Background technique [0002] The ecological red line is defined in accordance with relevant laws and regulations in order to maintain the safety of the ecological system, prevent the disorderly spread of urban and rural construction land, and ensure the sustainable development of the social economy. The boundary of the designated ecological protection land range. It not only includes all kinds of ecological land and green open space that have great natural and human value and regional influence, and needs to be controlled to ensure the normal and harmonious development of the urban economy and society, but also includes the use to improve ecology, protect the environment, and beautify the city. Provide residents with recreation, disaster prevention, and risk avoidance venues and various large-scale urban ...

AI Technical Summary

Problems solved by technology

[0004] But there are also many deficiencies: 1. In the process of analyzing the results of the evaluation of the importance of ecosystem services, we found that the distribution of areas with high importance of ecosystem services is scattered, and they are not related to other areas with low importance of ecosystem services The areas are distributed in a mixed manner around the city, and it is impossible to delineate a certain area with a line that is of high importance to ecosystem services. Due to the time-consuming and labor-intensive steps of data collection, extraction, field investigation, and comprehensive analysis, it is difficult for The division of the ecological red line of an area often takes several months to several years, so the results of the division often lose timeliness. It is often useful for analyzing the impact of the current urban development status on the ecosystem and predicting and planning the macro direction of future urban development. 2. At the same time, areas with extremely important ecosystem services and generally important areas are intertwined and scattered in many places. In some existing division methods, many unscientific, Infeasible division phenomenon, the division results must not truly reflect where the areas with high distribution and concentration of extremely important areas of ecosystem services are; 3. Since the division results tend to be superficial, in the existing ecological red line division method, Emphasize the strict grasp of the specific details of the regional division, the process is complicated, the overall division effect is low in visualization, and the ecological protection red line areas are scattered around the city, so it is not easy to scientifically see the current position and relationship between them and the city center. Therefore, it is also not applicable to the analysis and judgment of the overall urban scale ecological security pattern.

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