Mathematical derivation of a refined four-stream radiative transfer model in row planted crops

In the paper i.e., a refined four-stream radiative transfer model for row planted crops, the equations of the results are shown, namely the DRF-related equations. In order to further illustrate our research work, this material provides detailed mathematical physical ideas about the derivation and solution for the modified the four-stream (MFS) radiative transfer equations. The material includes:

A) Nomenclature table;

B) Derivation of horizontal radiative transfer equation for row crops;

C) Area fractions of each component in row crops;

D) Solving of the DRFs on the boundary of the canopy closure;

E) Solving of the DRF of between-row based on integral raditive transfer equation.