The content of the nitrogen in the humus horizon of the chernozem of the typical and usual Bug-Dnieper interfluves

  • M. Kovalev
Keywords: chernozems, soil density, total porosity, humus, aeration

Abstract

The analysis and the evaluation of the transformational changes were made which had happened in the soils under the influence of the agricultural use. On the basis of the generalization of the materials of the large scale soil researches the choice of the key areas was justified within Bug-Dnieper region of the Right Bank South Forest Steppe and the northern Steppe of Ukraine with the aim to study the changes of the properties of the black soil of the typical and usual heavy-loamy and light-clay coal and peat metric structure in the dependence of their use with the application of the comparative-geographical, comparative-profile-genetic, comparative-analytical and other methods of researches.In the conditions of Bug-Dnieper region of the Right Bank South Forest Steppe and the northern Steppe of Ukraine the integrated studying of the dependence of general nitrogen content on general humus of the typical and usual black soil was held. The changes of the physical and physical-chemical properties of the black soil of the typical and usual heavy-loamy and light-clay coal and peat metric structure were installed in the dependence on their agricultural use. On an example of many variants and wide programmed of the observations, the conservatism of the soils of the heavy-loamy and light-clay coal and peat metric structure wasn’t justified, in particular the significant changes of the physical and physical-chemical properties were found. Using a range of indicators the degradation of the properties of the typical and usual black soils under the anthropogenic pressure was installed, especially in the surface horizons-the reduction of the humus and general nitrogen’s content and also the deterioration of their physical properties.The mathematical models for the theoretical calculation of the general nitrogen’s content on the dependence of the content of the humus were developed. The theoretical dependence of the general nitrogen’s content is calculated according to the formulas: for the zone of the Forest Steppe – y = 0,0682 (r = 88); for the transition zone – y = 0,0503∙(r = 85); for the zone of the Steppe – y = 0,0635∙(r = 91).The trend of the anthropogenic transformation of the soils was installed, which is in strengthening of the differentiation of the profile by density of the addition, the total porosity and some physical-chemical properties, under the influence of the agricultural use. And it, in its turn, given more clear view about the physical and physical-chemical processes, which are flown in the soils.

References

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Section
Agricultural sciences (agronomics, agricultural ecology, land reclamation, ecology, crops husbandry, farming)