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

verfasst von

Alaa El-Hawwary, Kristof Brenzinger, Hyo Jung Lee, Annelies J. Veraart, Elly Morriën, Michael Schloter, Wim H. van der Putten, Paul L. E. Bodelier, Adrian Ho

Abstract

The GHG (CO₂, CH₄, N₂O) 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 (< 24 years) consistent with higher decomposition rate, but total emission decreased in the long term (> 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.

Organisationseinheit(en)

Institut für Mikrobiologie

Externe Organisation(en)

Netherlands Institute of Ecology
Julius-Maximilians-Universität Würzburg
Kunsan National University
Radboud Universität Nijmegen (RU)
Wageningen University and Research
Universiteit van Amsterdam (UvA)
Helmholtz Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt

Typ

Artikel

Journal

Biology and Fertility of Soils

Band

58

Seiten

579-591

Anzahl der Seiten

13

ISSN

0178-2762

Publikationsdatum

07.2022

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Mikrobiologie, Agronomie und Nutzpflanzenwissenschaften, Bodenkunde

Elektronische Version(en)

https://doi.org/10.1007/s00374-022-01644-x (Zugang: Offen)
https://doi.org/10.15488/12874 (Zugang: Offen)