Relations between soil respiration, humus quality and cation exchange capacity in selected subtypes of chernozem in South Moravia region
2008
Foukalova, J.,Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Agrochemie, Pudoznalstvi, Mikrobiologie a Vyzivy Rostlin | Pospisilova, L.,Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Agrochemie, Pudoznalstvi, Mikrobiologie a Vyzivy Rostlin | Jancek, M.,Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Agrochemie, Pudoznalstvi, Mikrobiologie a Vyzivy Rostlin
The aim of our work was to determine basal respiration, total carbon content, fractional composition of humus and basic parameters of soil colloidal complex in selected subtypes of chernozem in South Moravian region, Czech Republic. Basal respiration was measured using Vaisala GMT220 apparatus. Total carbon content was measured by oxidimetric titration and basic parameters of soil colloidal complex were determined according to Mehlich. Carbon dioxide production varied from 0.09 to 0.27 mg CO2/100g/h. A linear correlation between basal respiration and humification degree was found. Humus content varied from 2.15% to 4.6%. No correlation between the quantity of humus and basal respiration was observed. Higher values of basal respiration were connected with higher quality of humic substances. There was a significant linear correlation between total carbon content and cation exchange capacity.
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