Journal
EURASIAN SOIL SCIENCE
Volume 50, Issue 1, Pages 20-29Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1064229317010082
Keywords
geomorphometry; spatial variability of the soil properties; agrogray soil of slope; Luvic Greyzemic Phaeozems; ASTER GDEM
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The relationships between the morphometric parameters (MPs) of topography calculated on the basis of digital elevation model (DSTER GDEM, 30 m) and the properties of the plow layer of agrogray soils on a slope were analyzed. The contribution of MPs to the spatial variability of the soil moisture reached 42%; to the content of physical clay (< 0.01 mm particles), 59%; to the humus content, 46%; to the total nitrogen content, 31%; to the content of nitrate nitrogen, 28%; to the content of mobile phosphorus, 40%; to the content of exchangeable potassium, 45%; to the content of exchangeable calcium, 67%; to the content of exchangeable magnesium, 40%; and to the soil pH, 42%. A comparative analysis of the plow layer within the eluvial and transitional parts of the slope was performed with the use of geomorphometric methods and digital soil mapping. The regression analysis showed statistically significant correlations between the properties of the plow layer and the MPs describing surface runoff, geometric forms of surface, and the soil temperature regime.
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