The effects of detritus inputs on soil organic matter content and carbon-dioxide emission in a Central European deciduous forest.

Fekete, István and Kotroczó, Zsolt and Varga, Csaba and Veres, Zsuzsa and Tóth, János Attila (2011) The effects of detritus inputs on soil organic matter content and carbon-dioxide emission in a Central European deciduous forest. ACTA SILVATICA ET LIGNARIA HUNGARICA, 7. pp. 87-96. ISSN 1786-691X

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Abstract

A major objective of our research was to survey s oil biological activity and organic matter content reduction in a Central European oak forest during treatments of various detritus inputs within the Síkf ő kút DIRT ( Detritus Input and Removal Treatments ) Project. Beside the control, three detritus removal and two detritus duplication treatments wer e applied. Our examinations have proven that soil organic matter content declined relatively fast in detritus removal treatments. The reduction was especially remarkable in root detritus removal trea tments, where – due to the lack of transpiration – soils were moister during the whole year than in the othe r treatments. The higher moisture content, despite of the reduction of detritus input, produced an intens e soil respiration. This can be explained by the fa ct that decomposing organisms have increased the use of soi l organic matter. Detritus input reduction had a significantly greater effect on soil respiration an d organic matter content than detritus input duplic ation of the same extent. The latter did not cause any si gnificant change compared to the control.

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