A hyperspectral remote sensing monitoring method for wetland soil nitrifying microbial community

Abstract

The invention discloses a method for hyperspectral remote sensing monitoring of wetland soil nitrifying microbial communities, including: wetland soil spectrum and nitrifying microorganism measurement in the monitoring area; hyperspectral remote sensing image preprocessing, including format conversion, absolute radiance value conversion, atmospheric correction and geometry Precise correction; based on the experimental measurement spectrum, the estimation model of the number of nitrifying microorganisms in the wetland soil in the monitoring area is constructed to estimate the number of nitrifying microorganisms in the wetland soil in the monitoring area; the number of nitrifying microorganisms in the wetland soil is estimated based on hyperspectral remote sensing images; The value is determined. The benefit of the present invention is that it can extract the distribution of nitrifying microorganisms on a regional scale, thereby helping to obtain the temporal and spatial evolution characteristics and driving factor information of soil nitrification, and providing information for a correct understanding of the wetland nitrogen cycle process and its impact mechanism, and wetland pollution purification functions. scientific basis.

Description

technical field [0001] The invention relates to a hyperspectral remote sensing monitoring method for wetland soil nitrifying microbial communities, belonging to the field of remote sensing technology applications. Background technique [0002] Nitrogen cycle is a material cycle that describes the mutual transformation process between elemental nitrogen and nitrogen-containing compounds in nature, and is one of the core processes of element cycle in soil ecosystems, among which nitrification is of great significance to the nitrogen cycle of soil. Nitrification is an intermediate link connecting nitrogen fixation and denitrification, and it is related to the degree of nitrogen utilization by plants, soil acidification, water pollution and the greenhouse gas nitrous oxide (N 2 O) A series of ecological and environmental issues such as release are directly related. Therefore, nitrification is a central link in the nitrogen biogeochemical cycle. [0003] Nitrification is a reac...

AI Technical Summary

Problems solved by technology

Most of this kind of research is carried out on some specific sites sporadically, and it is difficult to obtain the changes in the distribution of microbial communities on a regional scale.

Moreover, the regional ecological effects of microbial communities take a long time to manifest, and it is difficult to give accurate estimates and evaluations only based on short-term monitoring

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