Method and system for predicting the soil pollution range of a heavy metal attenuation pollution source

A soil pollution and prediction method technology, applied in the agricultural field, can solve the problems such as the inability to accurately describe the boundary of the pollution source, the inability to describe the dynamic change process of the pollution range, and the poor applicability of the spatial scale.

Active Publication Date: 2020-07-17
BEIJING RES CENT FOR INFORMATION TECH & AGRI
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Problems solved by technology

[0004] Although the method of determining the scope of pollution influence based on experience or historical statistics is simple and clear, its results cannot accurately describe the influence boundary of pollution sources, nor can it describe the dynamic change process of the pollution scope.
Dynamic models based on numerical simulations usually have poor spatial scale applicability

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  • Method and system for predicting the soil pollution range of a heavy metal attenuation pollution source

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[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0040] The spatial scale adaptability of traditional numerical simulation methods is poor. On the one hand, models and parameters that are applicable on small scales often perform poorly on medium and large scales. There is no certain conversion relationship between the parameters of different spatial scales, and the measurement methods are also d...

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Abstract

The embodiment of the invention provides a method and system for predicting the soil pollution range of a heavy metal attenuation pollution source, and the method comprises the steps: dividing a target pollution region into a plurality of grids with preset sizes, and building a cellular automaton; for each grid at the current moment, enabling the cellular automaton to calculate the pollutant concentration of each grid at the next moment according to the pollutant concentration of each grid at the current moment, the pollutant concentration output quantity of each grid and the pollutant concentration input quantity of each grid; repeating the process until the number of the standard-exceeding grids reaches the maximum, and taking the boundary of all the standard-exceeding grids as the soilpollution influence range. Aiming at the problem of pollution of a heavy metal attenuation pollution source to surrounding soil, a cellular automaton geographic space simulation framework is adopted,and the cellular automaton is applied to soil pollution range prediction to determine a determination method for terminating iterative computation, so that quantitative dynamic simulation of the influence range of the pollution source is realized.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method and system for predicting soil pollution range of heavy metal attenuation pollution sources. Background technique [0002] Determining the scope of influence of heavy metal pollution sources is a prerequisite for monitoring and remediation. In current practice, the determination of the scope of influence of various pollution sources is mainly based on historical surveys and experience to determine the basic scope of influence (the number of kilometers around the pollution source), and then make corrections based on factors such as wind speed, precipitation, and terrain. [0003] Some studies have also used diffusion simulation models to describe the impact of heavy metal pollution sources on the surrounding soil environment. For example, the diffusion of heavy metal pollutants in soil or soil water is simulated using a convective diffusion model; the diffusion of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/26
CPCG06Q10/04G06Q50/26
Inventor 郝星耀潘瑜春李淑华董士伟李晓岚
Owner BEIJING RES CENT FOR INFORMATION TECH & AGRI
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