Soil environment quality zoning method and system

A technology of environmental quality and soil, which is applied in the direction of instruments, character and pattern recognition, data processing applications, etc., can solve the problems that traditional methods cannot satisfy the soil environmental quality zoning, and achieve the effect of strong application universality

Active Publication Date: 2021-05-11
BEIJING RES CENT FOR INFORMATION TECH & AGRI
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Problems solved by technology

[0009] The present invention provides a soil environment quality zoning method and system, which are used to solve the defect that the ...

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  • Soil environment quality zoning method and system
  • Soil environment quality zoning method and system

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[0049] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0050] The embodiment of the present invention aims at the complex areas caused by the interaction of high-intensity human activities such as industrial and mining enterprises' concentrated discharge, high investment in facility agriculture, and high geological background, and proposes a soil environmental quality zoning method for agricultural product origin, based on the high-density area S...

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Abstract

The invention provides a soil environment quality zoning method and system. The method comprises the following steps: extracting soil environment quality comprehensive characteristics of monitoring points in a target area based on a principal component analysis method; screening out main influence indexes of the soil environment quality by adopting a geographic detector; establishing a series initialization pre-classification scheme, and determining an optimal pre-classification scheme according to a Bayesian information criterion; constructing a Gaussian mixture model according to the optimal pre-classification scheme, and estimating hidden variable parameters representing sample point categories in the Gaussian mixture model through an EM algorithm to obtain initial classification of the monitoring points; and obtaining an initial partition based on the corresponding Thiessen polygon of the monitoring point, and performing final partition on the target area in combination with natural boundary information of the target area. According to the method, on the basis of the comprehensive characteristics of the soil environment quality of the monitoring points, the Gaussian mixture model based on the EM algorithm is constructed, and comprehensive partitioning of the soil environment quality based on the high-dimensional attribute characteristics is achieved.

Description

technical field [0001] The invention relates to the fields of agriculture and computer technology, in particular to a method and system for zoning soil environment quality. Background technique [0002] The influencing factors of soil heavy metals are divided into natural factors and human factors. The natural factors are mainly soil parent rock, and the human factors can be divided into industrial sources (such as mining, smelting, coal burning, transportation, etc.), agricultural sources (fertilizers, pesticides, irrigation water, etc.) and living sources (traffic, domestic wastewater, domestic waste, coal, etc.). Soil parent rock and soil-forming conditions are the main reasons for the regional differences in background values. Factors such as climate, biology, topography and landform play an important role in the process of soil formation and transportation, and affect the zonal distribution of heavy metals in soil. The production of industrial and mining enterprises a...

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Application Information

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IPC IPC(8): G06Q50/02G06Q10/06G06K9/62
CPCG06Q50/02G06Q10/06395G06F18/2135G06F18/24155
Inventor 潘瑜春刘佳斌郑顺安郜允兵杨晶赵亚楠周艳兵刘振民陈其永
Owner BEIJING RES CENT FOR INFORMATION TECH & AGRI
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