Method and system for quantitatively evaluating rare earth mining area environment pressure on basis of PSR model

Abstract

The invention relates to the technical field of rare earth mining area environment pressure evaluation, in particular to a method for quantitatively evaluating rare earth mining area environment pressure on basis of a PSR model. The method comprises the following steps of: S101, data acquisition: obtaining an original remote sensing image, rainfall capacity data, topographic data, soil data and population density data of a to-be-evaluated area through a data acquisition unit; S102, data pre-processing: correcting the remote sensing image obtained in the step S101 through a geometric correction module, and carrying out atmospheric correction and mask clipping to obtain a research area remote sensing image; S103, remote sensing image information extraction: analyzing surface feature classification information of an evaluation area through a remote sensing information extraction unit, and carrying out statistic on the area of the evaluation area; and S104, PSR model analysis. By adoption of the method and system, the environmental safety conditions of rare earth mining areas are quantitatively evaluated, so that technical support is provided for the environment governance of the rear earth mining areas; and compared with the field investigation manner, the method and system have the characteristics of being time-saving, labor-saving and high in efficiency.

Description

technical field [0001] The invention relates to the technical field of environmental pressure assessment of rare earth mines, in particular to a PSR model-based quantitative assessment method and system for the environmental pressure of rare earth mines. Background technique [0002] As a unique mineral resource in China, rare earth is known as "industrial vitamin" and "vault" of new materials, and is an important strategic resource of our country. The mining of rare earths has made an important contribution to the development of the national economy, but it has also caused serious ecological and environmental problems. The rare earth mining process is also a process of ecological environment destruction, such as vegetation destruction, land desertification, soil erosion, tailings occupation and other ecological environmental problems, which aggravate the fragility and degradation speed of the ecological system in the mining area, and seriously threaten the ecological securi...

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Problems solved by technology

[0003] The environmental pressure assessment of mining areas in my country relies more on field investigations, and the environmental impact and damage caused by mining cannot be fully estimated.

Most of the rare earth mines are located in remote mountainous areas, with high mountains and dense forests, scattered mining areas, and many mine sites. If the previous field investigation is used, it will not only be time-consuming and laborious, but also the work efficiency will be very low. It is also relatively difficult to quantitatively assess the environmental pressure of the mining area.

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