Nitric oxide emissions from soils; a case study with temperate soils from Saxony, Germany

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doi: 10.1007/s12665-011-1456-3
Authors:Oertel, Cornelius; Herklotz, Kurt; Matschullat, Jörg; Zimmermann, Frank
Author Affiliations:Primary:
Technische Universität Bergakademie Freiberg, Interdisciplinary Environmental Research Center, Geochemistry and Geoecology Unit, Freiberg, Germany
Volume Title:Environmental Earth Sciences
Source:Environmental Earth Sciences, 66(8), p.2343-2351. Publisher: Springer, Berlin, Germany. ISSN: 1866-6280
Publication Date:2012
Note:In English. 35 refs.; illus.
Summary:Nitrogen oxides (NOx) are involved in acid rain and ozone formation, as well as destruction. NOx are climate-relevant trace gases in the atmosphere. Atmospheric NOx originate from anthropogenic emissions (mainly combustion processes). NO from natural processes derives from thunderstorms and soil microbial processes. They may play a crucial role in soil-atmosphere feedback processes. This study aims to investigate NOx-emissions from soils under different land use, geographical and meteorological conditions. NOx-emissions were quantified in both field and laboratory experiments with a closed static chamber. Disturbed soil samples have been used for laboratory experiments. A climate chamber was used to regulate soil temperature of the samples. Field experiments showed that NO-soil emissions strongly depend on soil temperature. NO-emissions from a soil under meadow showed significant daily variations, unlike soil below spruce forest. Peak emission values were 18 µg NO-N m-2 h-1 above meadow and 1.3 µg NO-N m-2 h-1 under forest canopy. In addition, NO-emissions of meadow and forest soil were studied in a climate chamber, enhanced by an additional experiment with agricultural soil. These experiments revealed strong exponential correlations of NO-emissions and soil temperature. Maximum values reached above 400 µg NO-N m-2 h-1 from agricultural soils at soil temperatures above 50°C. This study shows that soil NO-emissions strongly depend on temperature, vegetation type and geographical position. Consequently, NO-emissions may have a positive feedback effect on climate change. Copyright 2011 Springer-Verlag
Subjects:Agriculture; Climate change; Climatic controls; Controls; Correlation; Discharge; Experimental studies; Forests; Greenhouse gases; Land use; Measurement; Microorganisms; Nitrous oxide; Pollution; Soil dynamics; Soil gases; Soils; Temperature; Toxic materials; Vegetation; Central Europe; Erzgebirge; Europe; Germany; Saxony Germany; Nitric oxide
Coordinates:N505500 N505600 E0132000 E0131900
Record ID:2012088689
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany
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