Ecological vulnerability evaluation method suitable for expressway road area
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A technology of expressway and evaluation method, which is applied in the fields of environmental science, environmental assessment, geography, ecology, and land space planning. Intuitive effect of deterministic and precision verification methods
Active Publication Date: 2021-03-26
中铁二十四局集团福建铁路建设有限公司 +3
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[0004] Traditional monitoring and evaluation mainly adopts artificial ground observation, positioning and measurement monitoring methods to obtain various vulnerability evaluation indicators for comprehensive evaluation,
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[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0035] It should be pointed out that the following detailed descriptions are all exemplary, and are intended to provide further explanation to the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0036] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprises" and / or "comprises" are used in this specification, they indicate There are features, steps, operations, means, ...
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Abstract
The invention relates to an ecological vulnerability evaluation method suitable for an expressway road domain. The method comprises the steps of providing grade division of regional ecological vulnerability evaluation and division of an ecological vulnerability range corresponding to each grade; collecting corresponding ground objects conforming to each grading characteristic of ecological vulnerability evaluation on the remote sensing image to serve as sample points to participate in modeling analysis, and adding the ecological vulnerability EFD of each sample point into attributes of the sample points in geographic information software; extracting a remote sensing index and a terrain index corresponding to each influence factor influencing the ground environment change and causing ecological vulnerability, performing normalization processing, and extracting the remote sensing index and the terrain index into the attributes of the sample points so as to enable the influence factors tobe comparable with each other; coupling the indexes, constructing an ecological vulnerability evaluation model, and obtaining a spatial distribution diagram of ecological vulnerability grading zoningof the research area through model calculation. The precision verification mode of the model is visual, accurate, simple and convenient, and both subjective visual discrimination and objective data analysis can achieve the effect.
Description
technical field [0001] The invention relates to the fields of ecology, geography, environmental science, land space planning, and environmental assessment, in particular to an ecological vulnerability assessment method suitable for highway road areas. Background technique [0002] The typical ecologically fragile areas in my country are mainly distributed in the arid and semi-arid areas in the north, the hilly areas in the south, the mountainous areas in the southwest, the Qinghai-Tibet Plateau, and the land-water junction areas in the east. The administrative areas include Heilongjiang, Inner Mongolia, Jilin, Liaoning, Hebei, Shanxi, Shaanxi, Ningxia, Gansu, Qinghai, Xinjiang, Tibet, Sichuan, Yunnan, Guizhou, Guangxi, Chongqing, Hubei, Hunan, Jiangxi, Anhui, Fujian and many other areas. These ecologically fragile areas are widely distributed, with low environmental carrying capacity and prominent conflicts between man and land. It is necessary to implement appropriate develo...
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