Morphology and genesis of gypsum pedofeatures and their representation on detailed soil maps of arid regions

A new map of gypsiferous soils has been developed on the basis of generalized cartographic and analytic data of a detailed soil survey at the Dzhizak Experimental Station. This map reflects the major regularities of the geographic distribution of gypsum pedofeatures in the studied soils. A detailed...

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Bibliographic Details
Published in:Eurasian soil science 2010-08, Vol.43 (8), p.848-857
Main Authors: Yamnova, I. A., Golovanov, D. L.
Format: Article
Language:English
Subjects:
Arid regions
Arid zones
Earth and Environmental Science
Earth Sciences
Genesis and Geography of Soils
Geographic information systems
Geographical distribution
Geography
Geomorphology
Geotechnical Engineering & Applied Earth Sciences
Groundwater levels
Gypsum
Minerals
Moisture content
Soil moisture
Soil sciences
Soil surveys
Soil types
Soil water
Spatial distribution
Water, Underground
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Summary:A new map of gypsiferous soils has been developed on the basis of generalized cartographic and analytic data of a detailed soil survey at the Dzhizak Experimental Station. This map reflects the major regularities of the geographic distribution of gypsum pedofeatures in the studied soils. A detailed macro- and micromorphological description of the gypsiferous horizons makes it possible to specify three morphological types of these horizons with incrustation, concretionary, and farinaceous gypsum concentrations. Their spatial distribution is closely related to the soil types, their position in the landscape, the groundwater level, and the type of soil water regime. The necessity to consider gypsiferous soils in the new classification of Russian soils at a high taxonomic level is discussed. A map of the morphological types of gypsiferous horizons has been compiled with the use of GIS-technologies and special scales for the description of the morphological parameters of gypsum pedofeatures.
ISSN:1064-2293
1556-195X
DOI:10.1134/S1064229310080028