Greenhouse gas (CO2, CH4, and N2O) emissions after abandonment of agriculture

The GHG (CO 2 , CH 4 , N 2 O) emission potential along a chronosequence of former agricultural soils abandoned for 9 to 32 years were compared to an actively managed (on-going) agricultural soil (reference). The soils were incubated in mesocosms with and without manure amendment, and microbial funct...

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Bibliographic Details
Published in:Biology and fertility of soils 2022-07, Vol.58 (5), p.579-591
Main Authors: El-Hawwary, Alaa, Brenzinger, Kristof, Lee, Hyo Jung, Veraart, Annelies J., Morriën, Elly, Schloter, Michael, van der Putten, Wim H., Bodelier, Paul L. E., Ho, Adrian
Format: Article
Language:English
Subjects:
Abandonment
Agricultural land
Agriculture
Biomedical and Life Sciences
Carbon dioxide
Carbon dioxide emissions
Climate change
Emission analysis
Emissions
Farm buildings
Farmyard manure
Functional groups
Global warming
Greenhouse effect
Greenhouse gases
Life Sciences
Manures
Mesocosms
Methane
Microorganisms
Nitrification
Nitrous oxide
Original Paper
Soil
Soil Science & Conservation
Soils
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Summary:The GHG (CO 2 , CH 4 , N 2 O) emission potential along a chronosequence of former agricultural soils abandoned for 9 to 32 years were compared to an actively managed (on-going) agricultural soil (reference). The soils were incubated in mesocosms with and without manure amendment, and microbial functional groups involved in nitrous oxide emission were quantitatively assessed. Carbon dioxide emission significantly increased after agriculture abandonment ( 29 years). With the cessation of agriculture, the abandoned sites generally became a net methane sink. Notably, total nitrous oxide emission showed a significant monotonic decrease over years of abandonment in response to manure amendment, possibly reflecting an altered capacity for (de)nitrification as indicated in the response of the (de)nitrifier abundance. Overall, our findings suggest that the GHG legacy of agriculture diminishes over time (> 29 years), with lowered GHG emissions and global warming potential (GWP) after abandonment of agriculture.
ISSN:0178-2762
1432-0789
DOI:10.1007/s00374-022-01644-x