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单词 Umbrisols
释义

Umbrisols

英语百科

Umbrisol

Contour terraces and grassed waterways used for erosion control in Kansas.
Distribution of umbrisols.

In soil classification, an umbrisol is a soil with a dark topsoil and in which organic matter has accumulated within the mineral surface soilin most cases with low base saturationto the extent that it significantly affects the behaviour and utilization of the soil. Umbrisols are the counterpart of comparable soils with a high base saturation (Chernozems, Kastanozems and Phaeozems).

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