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The Effects of Detritus Input on Soil Organic Matter Content and Carbon Dioxide Emission in a Central European Deciduous Forest

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Author(s): FEKETE, István | KOTROCZÓ, Zsolt | VARGA, Csaba | VERES, Zsuzsa | TÓTH, János Attila

Journal: Acta Silvatica & Lignaria Hungarica
ISSN 1786-691X

Volume: 7;
Start page: 87;
Date: 2011;
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Keywords: litter manipulation | soil respiration | DIRT Project | humus content | climate change

ABSTRACT
A major objective of our research was to survey soil biological activity and organic mattercontent reduction in a Central European oak forest during treatments of various detritus inputs within theSíkfkút DIRT (Detritus Input and Removal Treatments) Project. Beside the control, three detritusremoval and two detritus duplication treatments were applied. Our examinations have proven that soilorganic matter content declined relatively fast in detritus removal treatments. The reduction wasespecially remarkable in root detritus removal treatments, where – due to the lack of transpiration – soilswere moister during the whole year than in the other treatments. The higher moisture content, despite ofthe reduction of detritus input, produced an intense soil respiration. This can be explained by the fact thatdecomposing organisms have increased the use of soil organic matter. Detritus input reduction had asignificantly greater effect on soil respiration and organic matter content than detritus input duplicationof the same extent. The latter did not cause any significant change compared to the control.
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