Buleyko A. The Ecological features of micromorphological organization of thorny biogeocenozes edafotopes of south-east steppe area of Ukraine.

The objects are thorny biogeocenozes edafotopes of south-east steppe area of Ukraine. The aim is to study the ecological features of micromorphological organization of thorny biogeocenozes edafotopes of south-east steppe area of Ukraine. The methods are field geobotanical, ecomorphical, micromorphological, physical and chemical. Ecological- micromorphological researches of thorny edafotopes and steppe biogeocenozes formed in the conditions of south-east steppe area of Ukraine are conducted and proved, that for its soils is characteristic good structure of all soil mass. Mutual relations of components of microstructure gradually changes with a depth in the side of diminishing of microaggregates and increases of spongy material and it caused intensity of structure formation. Aggregates and spongy material considerably prevail among the components of gums horizons. High porosity of soils is exposed, in gums horizons as round pores and channels which are motions of rain-worms, that testifies about salvation influence of thorny fitocenozes on soil. Physical and chemical descriptions of soils of thorny biogeocenozes and soils of standard steppe virgin soil are exposed, that its are caused by high general maintenance of organic matter and predominance of maintenance of gums and fulvic acids, characteristic water strong due to what the line of boiling up of carbonates goes down considerably. The necessity of guard of thorny biogeocenozes is set as historical monuments of forming of shrub and ravine groupings in the steppe. Application spheres are recultivation of the broken grounds and training courses.