Combined method for measuring soil moisture content
https://doi.org/10.25587/SVFU.2022.27.3.001
Abstract
Spectral methods of measuring soil moisture are widely used in both contact and remote measurements. Spectral methods for determining soil moisture mainly use reflective spectra of soil, the most informative of which are near-infrared (NIR) and mid-infrared sections of the spectrum. A two-wave measurement method is known, which uses wavelengths of 1450 nm and 1300 nm on the reflective spectrum, which are not affected by organic substances present in the soil. However, there is evidence that a two-wave reflective method for determining soil moisture, depending on the specific wavelengths used, may be influenced by the clay content in the soil. A combined method for determining the water content of the soil has been developed. The method is based on two known methods for determining the water content of the soil, providing for the measurement of a reflective signal determined by the reflection spectrum, as well as taking into account constant coefficients depending on the wavelength of radiation. The proposed combined method involves the determination of these constant coefficients in the second method using measurements on three sites of the earth after measurements by the first method at two wavelengths at known constant coefficients. Further, at the stage of combining these methods, the wavelength of the measurements is selected in such a way that the difference between the measurement results of the two combined methods reaches a minimum.
About the Authors
G. R. g. Babaeva
National Aerospace Agency
Azerbaijan
Azerbaijan
BABAYEVA Gulshen Rauf gyzy – Senior Researcher
Baku
Yu. G. Danilov
M.K Ammosov North-Eastern Federal University
Russian Federation
Russian Federation
DANILOV Yury Georgievich – Candidate of Geographical Sciences, Professor, Department of Ecology and Geography, Institute of Natural Sciences
Yakutsk
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Review
For citations:
Babaeva G.R., Danilov Yu.G. Combined method for measuring soil moisture content. Vestnik of North-Eastern Federal University Series "Earth Sciences". 2022;(3):14-20. (In Russ.) https://doi.org/10.25587/SVFU.2022.27.3.001
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