THE CHEMICAL COMPONENT OF SOIL QUALITY

Ionuț Vasiliniuc

Abstract


The chemical component of soil quality is linked to how well the soil accomplishes the following functions: storing and gradually liberating nutrients; buffering the habitat against rapid changes of potentially toxic materials; recycling organic materials in soil so as to furnish nutrients. The most important functions that define soil chemical quality are nutrient fertilization, buffering toxic substances and nutrient recycling.
Chemical indicators are among the most often used, being capable of characterizing the rapid changes in soil quality. There are several indicators used, but up to the present moment there is no single indicator of soil quality that can fully express this complex quality of the earth’s upper cover.
Among the most used chemical indicators are organic matter, soil reaction and the derived acidity, alkalinity or sodicity, cationic exchange capacity, the buffering capacity and several analyses of anions or cations.
The study aims at bringing a focus on the chemical aspects of soil quality, with a case study on Horoiata basin from the Tutova Hills. Among the two main components of soil quality, deficiencies occur in the case of the physical one, departing from the dominant sandy grain size distribution. From a chemical viewpoint, the soils in the study area have a very good quality, few being the parameters that would need minor interventions.

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DOI: http://dx.doi.org/10.15551/fppzt.v9i1.152

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