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N.S. Evseeva & Z.N. Kvasnikova 2010. Ecological aspects of soils deflation development in agrolandscapes
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Ecological aspects of soils deflation development in agrolandscapes of
the south-east of the western Siberian plain
Abstract
N.S. Evseeva & Z.N. Kvasnikova
Tomsk State University, Russia
The research of the modern processes during the cold season of the year (October-April) in the
agrolandscapes of the south-western taiga area of the Western-Siberian plain has been done. The
intensity of the aeol processes and the ecological and geochemical aspects of their development
have been determined.
Keywords: Aeol processes, taiga (thick forest) area, agrolandscape
1. Introduction
Most researchers regard the taiga area of the Western-Siberian plain in the western part of
Siberia as the region where modern aeol processes are not practically developing. A.N. Sazhin,
Ju. I. Vasilyev (2003) consider the south-east of the taiga area of the plain to be the aeol
material accumulation zone. The findings obtained by the authors hold good for the natural taiga
landscapes of Western Siberia. Man’s economic activities introduce a correction for the natural
course of processes and stimulate a number of them as well as aeol processes. Our research
done from 1985 to 2008 shows that the modern south-eastern taiga aeol processes may be
classified according to their conditions, area, and the mechanism of their development.
Firstly, aeol processes are divided into natural and anthropogenic ones; secondly – they are
categorized into global, regional and local ones; thirdly, they fall into destructive and
accumulative ones.
Aeol processes do not play a great role in the relief formation of the taiga. They are represented
by the near river mouth plain sand spit transfer, sand winding in uncovered places, terrace
edges, flow hollows, water-shed plains as well as aeol material accumulation. The natural and
anthropogenic aeol processes are well-developed in arable land areas, places of felling, oil and
gas extraction zones and some other areas of economic activities.
Aeol dust accumulation carried by air flows over Eurasia should be called a global process. V.P.
Chichagov (1999) gives examples of such a transfer. On the 5 th of May 1993 in Shizunshan
(China) there occurred a transfer of fine aerosol particles from the north-west of Siberia, Central
Asia and the northern part of the New Land. On the 13 th and the 14 th of April 1994, Peking got
the material which had been delivered from Poland, Scandinavia, the mouth of the Pechorariver,
Western Siberia and Central Asia. The fine material was moving across Asia by means of
the north-west transfer which was constant in time. The process developing in the Western
Siberia area and those ones which are connected with air mass circulation over its territory refer
to the regional aeol processes.
Very often they are represented by dusty storms coming to the investigated territory from
Kazakhstan, Uzbekistan and the southern part of Western Siberia. The storm which occurred on
27 th -28 th of April 1968, may serve as an example. At that time clouds of dust hiding the Sun
hung over Tomsk and the Tomsk region as well as the Novosibirsk region. The air was greatly
saturated with the light dust which was evenly distributed over the surfaces of land and
buildings (Tanzybaev, Slavnina, 1975). Clouds of dust in the south-east of Western Siberia are
the remains of the black storm which occurred in plowing and virgin lands of Kazakhstan and
the southern part of the Western-Siberian plain (the distance from Tselinograd to Tomsk is more
Forest Landscapes and Global Change-New Frontiers in Management, Conservation and Restoration. Proceedings of the IUFRO Landscape Ecology
Working Group International Conference, September 21-27, 2010, Bragança, Portugal. J.C. Azevedo, M. Feliciano, J. Castro & M.A. Pinto (eds.)
2010, Instituto Politécnico de Bragança, Bragança, Portugal.