UDC 631.439(477.7)

O.V. Pismenniy

Abstract. In the steppe zone of Ukraine deflation (wind erosion) of soils is a fairly ordinary phenomenon. The important factor of deflation is the ability of soils in the region to confront blowing out during the most windy erosion part of the year (February-April). This factor is entitled “anti-deflation stability of soils.”

The relevance of our research is caused by increase of winter air temperatures and unsustainable management of land owners. The research aim is to establish the influence of content of elemental soil particles and climate on transformation of anti-deflation stability of Ukrainian Steppe soils.

Anti-deflation stability of black soils, chestnut and sandy loam soils of Ukrainian Steppe zone was investigated at the system of key areas, which are incorporated in Kherson and Mykolayiv regions.

As a result of the study, it was found that when the content of elemental soil particles (up to 10-12%) is the highest, the index of anti-deflation stability of black soils and dark chestnut soils is the highest (r – 0.65), and when the content of ESP exceeds this limit, then the anti-deflation resistance of these soils begins to decrease substantially. With the help of regression method we nominate three groups of soils for wind-resistant. To the first group (the most wind-resistant) belong average clay soils (VS>50%) with content organic matter 2,5-4,0%, to the second (wind-resistant): – light clay and sandy soils (VS 20-50%) with content organic matter 1,0-2,5%, to the third (no wind-resistant) belong a sandy soils (VS 0,7-20%) with content organic matter 0,5-1,5%.

Key words: elementary soil particles, structure, soil, anti-deflation stability.