Aciculignosa canopy reflectivity calculation method and model

Abstract

The invention discloses an aciculignosa canopy reflectivity calculation method. The method comprises the steps of S1, recognizing a parameter, wherein a model parameter is input, and the input parameter is preliminarily divided into three types, namely, a leaf parameter, a soil parameter and a canopy parameter; S2, inputting the leaf parameter in the step 1 into a LIBERTY model to conduct single leaf spectral information simulation to obtain the reflectivity and transmittance of an aciculignosa leaf; S3, according to the soil parameter and the canopy parameter in the step 1 and the reflectivity and transmittance of the spectrum of the single leaf, calculating an extinction coefficient and a scattering coefficient, and further calculating to obtain a parameter of the SALI model; S4, inputting the parameter obtained by calculation in the steps 3 into the SALI model, and calculating the related reflection factor and reflectivity of a canopy; S5, according to the reflection factor and the reflectivity in the step 4, calculating the reflectivity of the canopy. The aciculignosa canopy reflectivity calculation method is applicable to continuous aciculignosa canopy parameter inversion.

Description

technical field [0001] The invention relates to a method for inversion of vegetation parameters, in particular to a method for inversion of parameters of coniferous vegetation by using a physical radiation model. Background technique [0002] Quantitative remote sensing is more and more widely used in vegetation inversion, which is of great significance for efficient management of vegetation physiological parameter information, forest fire early warning, and crop cultivation. In recent years, the physical inversion model has become a vegetation parameter inversion model of domestic and foreign hot research because of its strong stability and portability. Among them, the method of using the physical coupling model of the leaf model and the canopy model to invert the content of the biochemical components of the entire canopy is a hot idea. The physical model of the leaf considers the physical mechanism of the interaction between light and the leaf and the structure of the lea...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is, aiming at the problem of inverting the parameters of coniferous vegetation in a continuous large area and the problem of simplifying the model parameters and calculation process, the present invention proposes a coniferous leaf LIBERTY model and canopy radiation transfer model SAIL The coupling model of the model, which simulates the reflectance and transmittance of a single coniferous leaf and takes it as the input parameter of the coniferous canopy model, and finally simulates the reflectance of the continuous coniferous canopy

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