Soil structure degradation quantification method based on soil pore parameters and hydrological functions

By combining quantitative methods of soil pore parameters and hydrological functions, and utilizing high-resolution CT scans and Pearson correlation coefficient analysis, the problem of neglecting synergistic correlations in soil structure degradation research was solved, enabling accurate diagnosis and remediation of soil degradation.

CN121027483AInactive Publication Date: 2025-11-28INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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Patent Information

Application Number
CN202511577100.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-31
Publication Date
2025-11-28
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

In existing technologies, soil structure degradation research has neglected the synergistic relationship between soil pore parameters and hydrological functions, resulting in a one-sided characterization of degradation and a lack of precise quantitative methods, which makes it difficult to meet the technical requirements for graded restoration of farmland soil degradation.

Method used

A quantitative method based on soil pore parameters and hydrological functions was adopted. Three-dimensional pore morphology parameters were obtained by high-resolution CT scanning. Combined with Pearson correlation coefficient and redundancy analysis, a quantitative analysis system of pore-hydrology synergy was constructed, and degradation quantitative levels were set.

Benefits of technology

It achieves accurate characterization and precise diagnosis of soil structure degradation, breaking through the limitations of traditional single parameters, and has good universality and prospects for promotion.

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Abstract

The invention discloses a soil structure degradation quantification method based on soil pore parameters and hydrological functions, relates to the technical field of farmland soil degradation analysis, and aims to solve the problem that degradation characterization is one-sided due to the fact that a traditional evaluation method only depends on a single physical or hydraulic index. The method comprises the following steps: sampling soil; utilizing CT scanning and image analysis to obtain soil pore structure parameters; parameters reflecting the hydrological function of the soil are obtained; obtaining a farmland soil degradation value by adopting the Pearson correlation coefficient and the soil pore structure parameter and the soil hydrological function parameter obtained by redundancy analysis; and setting a farmland soil structure degradation quantification grade, and comparing an actually measured farmland soil degradation value with a natural forest land or grassland so as to obtain a specific quantification grade of the farmland soil structure degradation. According to the method, the three-dimensional pore morphological parameters obtained through high-resolution CT scanning and the dynamic hydrological function indexes are subjected to coupling analysis, and the soil structure degradation degree can be accurately represented.
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