The influence of content esp on anti–deflation stability of the soils steppe in Ukraine

Abstract

In the steppe zone of Ukraine deflation (wind erosion) of soils is a fairly ordinary phenomenon. An important factor of deflation is the ability of soils in the region to confront blowing out in the most wind erosion seasons (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 aim of our study is to establish the influence of content of elemental soil particles and climate on transformation of anti–deflation stability of soils in Steppe zone of Ukraine. Anti–deflation stability of black soils, chestnut and sandy loam soils in Steppe zone of Ukraine was investigated on 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 chernozems 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 the soil begins to decrease substantially. With employ a regression method we nominate three groups of soils for wind–resistant. On the first group, most wind–resistant been a load and 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 coming a sandy soils (VS 0,7–20 %) with content organic matter 0,5–1,5 %.