Air-ground integrated cooperative monitoring system and method of soil heavy metal pollution degree

Abstract

The invention discloses an air-ground integrated cooperative monitoring system and method of soil heavy metal pollution degree. The air-ground integrated cooperative monitoring system is composed of an air hyperspectral surface source monitoring terminal, a ground LIBS point source monitoring terminal, and a ground monitoring terminal. According to the method, the air hyperspectral surface source monitoring terminal is used for rough measurement of large-area soil heavy metal pollution degree, and providing the positions of specific areas with soil heavy metal pollution; at the same time, the ground LIBS point source monitoring terminal is used for cooperative accurate measurement of soil heavy metal in the specific areas, including measurement on the kinds and contents of heavy metal pollutants; and at last, the ground monitoring terminal is used for displaying a three dimensional spatial distribution map of soil heavy metal pollution degree. According to the air-ground integrated cooperative monitoring system and the method, the air hyperspectral surface source monitoring terminal and the ground LIBS point source monitoring terminal are adopted, so that rapid accurate measurement on large-area soil heavy metal kinds and contents is realized, evaluation time and error of large-area soil heavy metal pollution degree are shortened and reduced respectively, and reliable basis is provided for treatment and prevention of soil heavy metal pollution.

Description

technical field [0001] The invention belongs to the technical field of soil ecological environment monitoring, and relates to a space-ground integrated collaborative monitoring system and method for the degree of heavy metal pollution in large-area soil, in particular to a large-area soil heavy metal pollution based on hyperspectral area source monitoring and LIBS point source monitoring A collaborative monitoring method for air-ground integration. Background technique [0002] With the expansion of industrial production scale, the aggravation of urban environmental pollution and the unreasonable use of pesticides and chemical fertilizers, the degree of soil heavy metal pollution is increasing, and the polluted area is also expanding. Heavy metal pollutants mainly refer to Hg (mercury), Cd (cadmium), Pb (lead), Cr (chromium), Cu (copper), Ni (nickel), Co (cobalt), Sn (tin) and metalloid As ( Arsenic), etc. Since heavy metal pollutants move poorly in the soil, stay for a lo...

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Problems solved by technology

However, in practical applications, due to the relatively low content of heavy metals in polluted soil, the signal reflected in the spectrum will be relatively weak, and the content of soil texture, humidity, organic matter, iron oxide, etc. will all affect the soil spectral characteristics, so the current The accuracy of detecting heavy metal pollution in soil by hyperspectral remote sensing technology is often not high

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