DBPapers
DOI: 10.5593/SGEM2016/B32/S13.008

CLIMATE AS A FACTOR OF SOIL DISPERSITY VARIATION

I. Zamulina, A. Salamova, T. Minkina, A. Batukaev, S. Sushkova
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-62-9 / ISSN 1314-2704, June 28 - July 6, 2016, Book3 Vol. 2, 55-62 pp

ABSTRACT
Particle-size distribution is the fundamental physical property of the soil. For the adequate description of a condition of soils polydisperse system it is necessary to consider soil in dynamics, comparing among themselves not the quantitative maintenance of separate granulometric fractions, and their dynamic ratios with each other. In 2009-2011 monitoring of change was carried out for soil dispersion on seasons and years at the Botanical garden of Southern Federal University. The granulometric analysis was made by pipet-method according to N. A. Kachinsky with pyrophosphatic sample preparation. An increasingly arid climate results in a change of the ratio of the clay and silt in physical clay toward a greater silt content influence on the processes of soil aggregating dispersed by change of the temperature and humidity modes: cycles of moistening and a siccation, and also freezing - thawing. The analysis of soil dispersion dynamics of samples has been shown that soil has the cyclic character connected with cyclic dynamics of weather climatic conditions of the research period. An increasingly arid climate results in a change of the ratio of the clay and silt in physical clay toward a greater silt content were measured during research.

Keywords: polydisperse soil system, particle-size fractions, silt, dust

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