Express Estimation of the Physiological State of Woody Plants by Dielectric Characteristics of Tree Stem Tissues
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2021, Vol 15, Issue 2
Abstract
Dielectric spectroscopy methods for estimating the state of trees were considered. Dielectric characteristics describe cell membranes and conductivity of plant tissues. A pulsed Fourier transform dielectric spectrometer of an original design was used to measure the values of dielectric characteristics. The spectrometer was connected to a portable computer, which was used to control and power it. The device design allows to expressly (in about 1s) receive information on the dielectric characteristics of the tree trunk tissues in the frequency range from 1 to 100 kHz and to process, visualize and save the results of measurements on a computer in the field conditions. Tree state estimates obtained with the pulsed Fourier transform dielectric spectrometer were compared with the visual tree characteristics and radial growth data. It is shown that there are differences in the values of dielectric characteristics in trees of different state categories and with different values of radial growth. Dielectric spectroscopy data, unlike subjective qualitative visual indicators of tree state, are quantitative and objective. The data can be obtained much faster and with less effort compared to estimates of tree characteristics by radial growth. The described method was used to estimate the state of Siberian pine (Pinus sibirica), Siberian fir (Abies sibirica) and Siberian spruce (Picea obovata) in forest plantations of the Baikal region. Studies were carried out both in control (undamaged) plantations and in those affected by bacterial infection. It is shown that the proposed method can be applied to the express state estimation of trees and the level of their damage. For citation: Soukhovolsky V.G., Voronin V.I., Oskolkov V.A., Kovalev A.V. Express Estimation of the Physiological State of Woody Plants by Dielectric Characteristics of Tree Stem Tissues. Lesnoy Zhurnal [Russian Forestry Journal], 2021, no. 2, pp. 70–85. DOI: 10.37482/0536-1036-2021-2-70-85
Authors and Affiliations
V. G. Soukhovolsky, V. I. Voronin, V. A. Oskolkov, A. V. Kovalev
Keywords
Related Articles
- EP ID EP693555
- DOI https://doi.org/10.37482/0536-1036-2021-2-70-85
- Views 192
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