Transformation of soil texture schemes and determination of water-physical properties of soils

Authors : Alexander SADOVSKİ, Mariya IVANOVA

Pages : 306-313

Doi:10.18393/ejss.760201

View : 59 | Download : 10

Publication Date : 2020-10-01

Article Type : Research Paper

Abstract :Measuring soil water-physical properties is laborious, time-consuming, and expensive. That provokes a lot of scientists to estimate them which action is troubled by the usage of different soil texture classification systems. The study proposes a rapid, reliable, and universally applicable methodology for soil textural transformations between different classification systems. The method of discrete mathematics is applied to make the conversion of particle-size classes from the Kachinsky system, which is used in Bulgaria to the International systems. Three different data sources were used to determine the water-physical properties of soils from textural data - 376 soil profiles from Bulgaria, extraction from the SoilGrids system for the Plovdiv district in Bulgaria and data from CanSIS/NSDB database. The relationship between the dependent variables field capacity insert ignore into journalissuearticles values(FC);, wilting point insert ignore into journalissuearticles values(WP); and bulk density insert ignore into journalissuearticles values(BD);, and independent variables sand, silt, and clay soil content was sought in the form of a regression equation. The applied stepwise regression procedure produces a close dependence between the soil texture and its water-physical properties.
Keywords : Bulk density, discrete mathematics, field capacity, soil texture, wilting point

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