Assessment volume of a forest biomass by the attenuation of the navigation signals the frequencies L1

Anatoly Sorokin,Daniil Makarov,Aleksandr Borisov,Viktor Ivanov,Anatoly Ostylovsky,Dmitry Kharlamov,V.B Kashkin,M.V Noskov,V Kharuk,Y.A Maglinets,E Loupian,G.M Tsibulśkii,L.G Sverdlik

doi:10.1051/e3sconf/202014902006

Abstract

The method for assessment the volume of a forest stand based on measurements of the attenuation of navigation satellites signals in the L1 range and morphological features of forest species is presented. The dielectric model of a mixed dielectric with the natural structural features of the species of the forest stand was used. The option of restoring the biomass volume of the forest stand according to the radioscopy data on the mixed forest test site is considered. The practical applications of the method of continuous local monitoring of the forest stand condition in forest science are discussed.

Highlights

The physics of the interaction of radio waves with the forest is an actual area of research in fundamental and applied sciences
The electrophysical properties of the stand as a multicomponent medium are determined by the molecular structure of wood, including water, and the macroscopic distribution of tree elements in the volume of the stand
Temporal dependences of the amplitude of attenuated signals in the forest stand are used to determine the coefficients of specific attenuation assigned to the areas of different types of forests taking into account the known taxation characteristics

Summary

Introduction

The physics of the interaction of radio waves with the forest is an actual area of research in fundamental and applied sciences. The electrophysical properties of the stand as a multicomponent medium are determined by the molecular structure of wood, including water, and the macroscopic distribution of tree elements in the volume of the stand. It is possible to continuously monitor the state of the stand by radioscopy using signals from navigation satellites [2]. The electrophysical characteristics of the stand are determined by the amount of stand biomass by fractions, the moisture content of wood, needles, leaves and the spatial distribution of trees. The sounding of forests with signals from various satellites of the GPS and GLONASS navigation systems with a frequency of 1 Hz provides scanning of the forest stand on an area of up to 1 ha. Coordinate binding of scanning flows of pulse signals allows determining the localization of changes in biomass and its moisture [3]

Method for determining the bulk density of stand biomass

Results and discussion

Conclusions