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Construction method of spatio-temporal simulation model for soil heavy metal accumulation process

A technology of accumulation process and simulation model, which is applied in the field of building a spatiotemporal simulation model for the accumulation process of heavy metals in soil, can solve the problems of not involving the influence of soil spatial variability, uncertainty of simulation results, and inability to effectively characterize regional soil spatial heterogeneity, etc. Achieving the effects of sustainability and effectiveness assessments

Active Publication Date: 2022-06-21
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

However, the flux model is a one-dimensional model, mostly based on the small-scale field with uniform underlying surface, and does not involve the influence of regional soil spatial variability under different input modes
The flux model is used to simulate the accumulation of heavy metals in regional soil, and its parameter setting cannot effectively represent the spatial heterogeneity of regional soil, and the simulation results have great uncertainty

Method used

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  • Construction method of spatio-temporal simulation model for soil heavy metal accumulation process
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  • Construction method of spatio-temporal simulation model for soil heavy metal accumulation process

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Embodiment Construction

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] The embodiment of the invention discloses a method for constructing a spatiotemporal simulation model of the accumulation process of heavy metals in soil. Based on the unit flux model, the key environmental processes in the accumulation process of heavy metals in farmland soil are characterized, and the accumulation input and output fluxes of heavy metals in the soil are estimated, and Perform geostatistical analysis, select the...

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Abstract

The invention discloses an ArcGIS-based method for constructing a spatiotemporal simulation model of soil heavy metal accumulation process, and relates to the field of precision agriculture. The present invention uses ArcGIS spatial analysis and model construction, couples the unit flux model and the spatial data platform, constructs a time-space simulation model of soil heavy metal accumulation process based on ArcGIS, simulates and analyzes the time-space change process of heavy metal content in farmland soil in large-scale areas, and predicts potential risk areas , and assess the sustainability and effectiveness of existing pollution prevention and control measures.

Description

technical field [0001] The invention relates to the field of precision agriculture, in particular to a method for constructing a spatiotemporal simulation model of a soil heavy metal accumulation process. Background technique [0002] The sources of heavy metals in farmland soil are complex, including soil parent materials, industrial production, agricultural inputs, transportation, and domestic wastes. After exogenous heavy metals enter the farmland soil, they exist in the soil in the form of complex organic or inorganic substances through the processes of exchange, adsorption and precipitation, and are then absorbed by plants. In terms of time, the main sources and pollution pathways of heavy metals in soil may also be affected by economic models. Spatially, due to the different compositions and ratios of pollution sources, the corresponding heavy metal accumulation degrees are also different among different sites, showing strong spatial heterogeneity. In addition, becau...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20Y02A40/10
Inventor 杨阳陈卫平王美娥
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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