Impact texture on the spectral reflectivity of agro-sod-podzolic soils | Спектральная отражательная способность агродерново-подзолистых почв в зависимости от гранулометрического состава
2013
Drobysh, S.V., The Progect Insitute 'Belgiprozem', Minsk (Belarus) | Bubnova, T.V. | Matychenkova, O.V., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
In course of the research there was studied the agro-sod-podzolic soils spectral reflectivity of different texture with the same content of humus, determined at different wave lengths. The research was realized in the conditions of the Republic of Belarus. As a result of realized research it was revealed that independently of the test wave length (A = 750 nm , A = 680 nm , A = 440 ... 690 nm) the spectral reflectance for loam species was always higher than for soils of lighter granulometric composition at the same content of humus and ranged an average from 48.9% for A = 750 nm in the loam soils to 34.8% in the loosely-loam soils, for A = 680 nm from 44.4% to 31.6%, and for A = 440 - 690 nm from 35.9% to 27.2%, respectively. The wave length of 750 nm was the most informative features for the reflectivity as the function of soils texture. The correlation coefficient between the humus content and spectral reflectance A750 varied depending on the particle size distribution - from r = -0.94 in cohesive sandy varieties to r = -0.91 in light loamy soils and to r = -0.77 in loosely-sandy and cohesive-sandy soils against r = -0.55 on all data, independent of granulometric composition.
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