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PROCESSES AND FACTORS OF POROSITY EVOLUTION

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Author(s): Gheorghe Jigau

Journal: Soil Forming Factors and Processes from the Temperate Zone
ISSN 1582-4616

Volume: 9;
Issue: 1;
Start page: 1;
Date: 2010;
Original page

Keywords: soil density | pedogenetic processes | agricultural regime

ABSTRACT
It is widely recognized that agriculture, and mostly the intensive type of agriculture, has an important impact on soil. In this case, even the simplest tillage operation leads to the greatest dysfunction ever met in the trophic chain and to the negative anthropogenic impact on soil. The result is defined by a number of new features (arable horizon, sub-arable horizon, layered and reversed profiles) and intensification of some processes like dehumification, compaction, de-structuring etc. Specified processes are distributed and have a common characteristic regarding the accumulation of residual effects from one year to another, from one stage to another, leading to the establishment in agricultural soils of a specific dynamic of pedogenetic processes, different from the natural one.The integrated index of the mentioned processes is the soil pore space and its dynamics in an anthropogenic regime.
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