A method and system for constructing a soil-vegetation synergistic interaction radiation transfer model

By constructing a soil-vegetation synergistic interaction radiative transfer model, soil nutrients and crop status are dynamically coupled, solving the problem of insufficient dynamic characterization of soil spectra under vegetation cover conditions in existing models, and realizing high-precision SOC remote sensing monitoring and cross-platform applicability.

CN121658753BActive Publication Date: 2026-06-09CHINA AGRI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA AGRI UNIV
Filing Date
2026-02-03
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing radiative transfer models struggle to dynamically characterize soil spectra under vegetation cover conditions, neglecting soil-crop feedback mechanisms and resulting in insufficient accuracy in SOC remote sensing monitoring. In particular, complex signal superposition occurs when vegetation cover gradients change, making accurate monitoring difficult.

Method used

A soil-vegetation cooperative interactive radiative transfer model (SVSI-RTM) was constructed. By dynamically coupling soil nutrient and crop state tensors, a dual feedback driving system of 'nutrient + phenotype = spectrum' was formed. The APSIM model was used to simulate crop growth. Combined with SSCG, PROSPECT-D and SAILH modules, the spectral characteristics of soil and canopy were simulated. The model was adapted to multispectral sensors through spectral resampling.

Benefits of technology

It achieves accurate reproduction of soil organic carbon remote sensing monitoring under vegetation cover conditions, improves the accuracy of spectral simulation and cross-platform applicability, and ensures the physical consistency and scenario generalization ability of spectral simulation.

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Abstract

The application discloses a kind of soil-vegetation synergic interaction radiation transmission model construction method and system, belong to soil remote sensing monitoring technical field.The method includes: obtaining dynamic parameter, the parameter of target area crop is output soil state parameter and vegetation state parameter by running crop growth model;Parameter conversion is carried out by calling mechanism constraint transfer operator;Coupling radiation transmission model, and based on the sensor response function convolution method of radiation transmission mechanism, the hyperspectral reflectance data output by the canopy radiation transmission module is smoothed, and the equivalent reflectivity of each band is calculated by numerical integration;Output soil-crown complex mixed reflection characteristic data.The application breaks through the bottleneck problem of traditional radiation transmission model in soil organic carbon remote sensing monitoring under vegetation coverage scene, and finally achieves significant technical effect in spectral simulation accuracy, cross-platform applicability, scene generalization ability and application support value.
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