NATURE OF MICROAGGREGATES IN THE SOUTHERN CHERNOZEM OF THE KULUNDA STEPPE

摘要

The individual character of West-Siberian chernozems always attracted attention of many soil scientists. The studies were performed in extensive areas, which were crossed in both longitudinal and latitudinal directions, so that zonal and provincial features of chernozems' pattern became known. Thus, the subtypes of podzolized, leached, and typical chernozems are present in the soil cover composition in the northern forest-steppe and steppe zones, Southward, they are gradually replaced by ordinary andsouthern subtypes of chernozems. The southern part of the Kulunda Plain is characterized by southern chernozems in combination with chestnut soils. The zone of chernozems has a pronounced complex soil cover pattern; saline and hydromorphic soils are associated with chernozems.