Target soil property content prediction method based on soil transfer function

Abstract

The invention relates to a target soil property content prediction method based on a soil transfer function. The method comprises the following steps: on the basis of collecting a multi-source soil data set and an environmental variable, dividing a data set containing all measurement information, dividing a secondary region according to spatial heterogeneity of soil properties, screening an optimal independent variable set of soil transfer functions in different regions, and further carrying out linear and nonlinear soil transfer function fitting for different partitions; through precision comparison of different partitions and different functions, selecting an optimal sample point-oriented soil transfer function for perfecting a soil sample point database; constructing a soil independentvariable map layer of the region by applying a machine learning mode, constructing a region-oriented soil transfer function, and making a target soil property content spatial distribution map of the production target region. Therefore, accurate prediction of the target soil property content can be efficiently realized, and the working efficiency is improved.

Description

technical field [0001] The invention relates to a method for predicting the property and content of target soil based on soil transfer function, and belongs to the technical field of soil measurement. Background technique [0002] As an important carrier of human living environment, the development of social economy is closely related to soil. Since the 20th century, the rapid development of global industrialization has led to a sharp increase in the content of heavy metals in the soil, especially in the soil around industrial areas and various mining areas. The heavy metal content in the soil has seriously affected the stability of the ecosystem. The attention of the broad masses of the people is a globally recognized hot topic. The development of sustainable ecological agriculture suggests the use of more ecological and environmentally friendly organic fertilizers. However, cow dung and pig manure, which are widely used in current agricultural production, will produce co...

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Problems solved by technology

[0011] (3) The obtained soil transfer function can only predict the soil information at the sample point scale, and cannot be extended to the regional scale, forming a soil map that can serve more application departments

The accuracy of the soil map of the covered area cannot reach the accuracy of laboratory analysis, so these soil transfer functions cannot be directly applied to the historical soil map to make the spatial distribution map of soil properties and content

[0012] The insufficiency of the existing soil property and content prediction technology mentioned above has affected the specific benefits of the production and processing of soil information products in relevant application departments such as biology, agronomy and environment, and caused economic losses to the national ecological planning and precision agriculture deployment to a certain extent.

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