Methane Production and Consumption in Loess Soil at Different Slope Position
Methane (CH4) production and consumption and soil respiration in loess soils collected from summit (Top), back slope (Middle), and slope bottom (Bottom) positions were assessed in laboratory incubations. The CH4 production potential was determined under conditions which can occur in the field (relat...
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doaj-77e25fffa4c94a42b6c252338b413a6b2020-11-25T00:49:44ZengHindawi LimitedThe Scientific World Journal1537-744X2012-01-01201210.1100/2012/620270620270Methane Production and Consumption in Loess Soil at Different Slope PositionMałgorzata Brzezińska0Magdalena Nosalewicz1Marek Pasztelan2Teresa Włodarczyk3Institute of Agrophysics, Polish Academy of Sciences, Ulica Doświadczalna 4, 20290 Lublin, PolandInstitute of Agrophysics, Polish Academy of Sciences, Ulica Doświadczalna 4, 20290 Lublin, PolandInstitute of Agrophysics, Polish Academy of Sciences, Ulica Doświadczalna 4, 20290 Lublin, PolandInstitute of Agrophysics, Polish Academy of Sciences, Ulica Doświadczalna 4, 20290 Lublin, PolandMethane (CH4) production and consumption and soil respiration in loess soils collected from summit (Top), back slope (Middle), and slope bottom (Bottom) positions were assessed in laboratory incubations. The CH4 production potential was determined under conditions which can occur in the field (relatively short-term flooding periods with initially ambient O2 concentrations), and the CH4 oxidation potential was estimated in wet soils enriched with CH4. None of the soils tested in this study emitted a significant amount of CH4. In fact, the Middle and Bottom soils, especially at the depth of 20–40 cm, were a consistent sink of methane. Soils collected at different slope positions significantly differed in their methanogenic, methanotrophic, and respiration activities. In comparison with the Top position (as reference soil), methane production and both CO2 production and O2 consumption under flooding were significantly stimulated in the soil from the Middle slope position (P<0.001), while they were reduced in the Bottom soil (not significantly, by 6 to 57%). All upper soils (0–20 cm) completely oxidized the added methane (5 kPa) during 9–11 days of incubation. Soils collected from the 20–40 cm at the Middle and Bottom slope positions, however, consumed significantly more CH4 than the Top soil (P<0.001).http://dx.doi.org/10.1100/2012/620270 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Małgorzata Brzezińska Magdalena Nosalewicz Marek Pasztelan Teresa Włodarczyk |
spellingShingle |
Małgorzata Brzezińska Magdalena Nosalewicz Marek Pasztelan Teresa Włodarczyk Methane Production and Consumption in Loess Soil at Different Slope Position The Scientific World Journal |
author_facet |
Małgorzata Brzezińska Magdalena Nosalewicz Marek Pasztelan Teresa Włodarczyk |
author_sort |
Małgorzata Brzezińska |
title |
Methane Production and Consumption in Loess Soil at Different Slope Position |
title_short |
Methane Production and Consumption in Loess Soil at Different Slope Position |
title_full |
Methane Production and Consumption in Loess Soil at Different Slope Position |
title_fullStr |
Methane Production and Consumption in Loess Soil at Different Slope Position |
title_full_unstemmed |
Methane Production and Consumption in Loess Soil at Different Slope Position |
title_sort |
methane production and consumption in loess soil at different slope position |
publisher |
Hindawi Limited |
series |
The Scientific World Journal |
issn |
1537-744X |
publishDate |
2012-01-01 |
description |
Methane (CH4) production and consumption and soil respiration in loess soils collected from summit (Top), back slope (Middle), and slope bottom (Bottom) positions were assessed in laboratory incubations. The CH4 production potential was determined under conditions which can occur in the field (relatively short-term flooding periods with initially ambient O2 concentrations), and the CH4 oxidation potential was estimated in wet soils enriched with CH4. None of the soils tested in this study emitted a significant amount of CH4. In fact, the Middle and Bottom soils, especially at the depth of 20–40 cm, were a consistent sink of methane. Soils collected at different slope positions significantly differed in their methanogenic, methanotrophic, and respiration activities. In comparison with the Top position (as reference soil), methane production and both CO2 production and O2 consumption under flooding were significantly stimulated in the soil from the Middle slope position (P<0.001), while they were reduced in the Bottom soil (not significantly, by 6 to 57%). All upper soils (0–20 cm) completely oxidized the added methane (5 kPa) during 9–11 days of incubation. Soils collected from the 20–40 cm at the Middle and Bottom slope positions, however, consumed significantly more CH4 than the Top soil (P<0.001). |
url |
http://dx.doi.org/10.1100/2012/620270 |
work_keys_str_mv |
AT małgorzatabrzezinska methaneproductionandconsumptioninloesssoilatdifferentslopeposition AT magdalenanosalewicz methaneproductionandconsumptioninloesssoilatdifferentslopeposition AT marekpasztelan methaneproductionandconsumptioninloesssoilatdifferentslopeposition AT teresawłodarczyk methaneproductionandconsumptioninloesssoilatdifferentslopeposition |
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