Improved mining industry derelict land reclamation appropriateness fuzzy synthetic evaluation method

Abstract

The invention belongs to the field of land evaluations, and provides an improved mining industry derelict land reclamation appropriateness fuzzy synthetic evaluation method. The improved mining industry derelict land reclamation appropriateness fuzzy synthetic evaluation method comprises the step of establishing an evaluation index system, the step of determining evaluation index weights, the step of dividing evaluation units based on a mining industry waste map spot extracted from a remote sensing image, the step of determining the evaluation unit dividing sequence according to the evaluation index weights and data obtaining precision of the evaluation index weights, and the step of constantly adjusting the dividing line to enable the evaluation unit shapes and the areas to facilitate production practice to finally obtain the evaluation unit meeting the requirement according to the proportion of the index values of the evaluation indexes in the mining industry derelict land map spot grid area. In addition, the evaluation indexes are divided into a quantitative evaluation index and a qualitative evaluation index, different subjection functions are established for different types of evaluation indexes, and a reclamation appropriateness grade for a specific purpose is obtained. The improved mining industry derelict land reclamation appropriateness fuzzy synthetic evaluation method has the advantages that the evaluation result is more objective and accurate, the workload is low and the evaluation method can directly serve for production practical.

Description

technical field [0001] The invention belongs to the technical field of land suitability evaluation, and in particular relates to an improved fuzzy comprehensive evaluation method for reclamation suitability of mining abandoned land. Background technique [0002] Land is a very precious natural resource. However, with the development of the mining industry, the land resources in mining areas are increasingly being severely damaged, which has a serious impact on people's life, production and ecological environment. Therefore, it is particularly important to carry out land reclamation work and take remediation measures to restore the destroyed land to usable land. [0003] The suitability evaluation of mining abandoned land reclamation is of great significance for land reclamation. It is based on the investigation of the overall quality of the land and the statistics and prediction of the damage to the land to determine the reasonable use direction of the land to be reclaimed, ...

AI Technical Summary

Problems solved by technology

In the prior art, the following three methods are usually used to obtain the evaluation unit: (1) The grid of the evaluation index is used as the evaluation unit; the main disadvantage of this method is: simply using the grid as the evaluation unit, the accuracy of the evaluation result is relatively high , but it cannot reflect the differences of the participating factors and the integrity of the map block, which is not convenient for the application of the evaluation results

(2) Superimpose the layers of each evaluation index, and use the area where the superimposed index values ​​are basically the same as the evaluation unit; The block shapes and areas are different, which is not conducive to the application of evaluation results

The main disadvantage of this method is that the extracted abandoned map spots are directly used as the evaluation unit, and the evaluation results are too rough.

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