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

Content Provider	Springer Nature Link
Author	Oertel, Cornelius Herklotz, Kurt Matschullat, Jörg Zimmermann, Frank
Copyright Year	2011
Abstract	Nitrogen oxides (NO$_{ x }$) are involved in acid rain and ozone formation, as well as destruction. NO$_{ x }$ are climate-relevant trace gases in the atmosphere. Atmospheric NO$_{ x }$ 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 NO$_{ x }$-emissions from soils under different land use, geographical and meteorological conditions. NO$_{ x }$-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.
Starting Page	2343
Ending Page	2351
Page Count	9
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	66
Issue Number	8
e-ISSN	18666299
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-11-23
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Soil emissions Nitric oxide Nitrification Closed static chamber Climate change Geology
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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