Effect of contrasting changes in hydrothermic conditions on the N2O emission from forest and tundra soils |
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| Authors: | V. O. Lopes de Gerenyu I. N. Kurganova R. Teepe N. Loftfild H. Flessa |
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| Affiliation: | 1.Institute of Physicochemical and Biological Problems of Soil Science,Russian Academy of Sciences,Pushchino, Moscow oblast,Russia;2.Institute of Soil Science and Forest Nutrition,G?ttingen University,G?ttingen,Germany |
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| Abstract: | The effects of intense moistening and alternating freezing-thawing cycles on the N2O emission from soils of an oak forest (brown forest soil in Lower Saxony, Germany) and southern tundra (cryozem in the area of Tal’nik Station near the city of Vorkuta) were studied in a model experiment. A sharp rise in the N2O emission reaching 350–670 μg N/m2 per h was recorded during the thawing of the brown forest soil, and the loss of nitrogen initiated by the freezing-thawing cycles comprised 74% of the total N2O emission during the whole experiment. No significant fluxes of N2O from the tundra soil were recorded during the experiment. |
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