Microstructure of humus horizons of gypsic soils from the Niecka Nidzianska area (South Poland)

摘要

The microstructure of the humus horizons of gypsic soils belonging to lithic. mollic and cambic rendzic Leptosols [FAO/UNESCO, Soil Map of the World. ISRIC Wageningen, 1997.] from the Niecka Nidzianska area (South Poland) was studied. Soil samples were collected from humus horizons of 24 profiles of soils which differed in many ways such as geomorphological position (on slopes with north or south exposure and on flat terrain) depth of profiles (shallow and deep soils) as well as land use (arable and covered by natural vegetation). The following properties were determined: pH. the level of organic carbon, the total nitrogen, clay content and CaCO3 content. Thin sections were made of undisturbed soil samples.