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Synthesizing the evidence of nitrous oxide mitigation practices in agroecosystems

Grados, Diego ; Butterbach-Bahl, Klaus 1; Chen, Ji; Groenigen, Kees Jan van; Olesen, Jørgen Eivind; Groenigen, Jan Willem van; Abalos, Diego
1 Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT)

Abstract:

Nitrous oxide (N$_2$O) emissions from agricultural soils are the main source of atmospheric N$_2$O, a potent greenhouse gas and key ozone-depleting substance. Several agricultural practices with potential to mitigate N$_2$O emissions have been tested worldwide. However, to guide policymaking for reducing N$_2$O emissions from agricultural soils, it is necessary to better understand the overall performance and variability of mitigation practices and identify those requiring further investigation. We performed a systematic review and a second-order meta-analysis to assess the abatement efficiency of N$_2$O mitigation practices from agricultural soils. We used 27 meta-analyses including 41 effect sizes based on 1119 primary studies. Technology-driven solutions (e.g. enhanced-efficiency fertilizers, drip irrigation, and biochar) and optimization of fertilizer rate have considerable mitigation potential. Agroecological mitigation practices (e.g. organic fertilizer and reduced tillage), while potentially contributing to soil quality and carbon storage, may enhance N$_2$O emissions and only lead to reductions under certain pedoclimatic and farming conditions. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000152513
Veröffentlicht am 10.11.2022
Originalveröffentlichung
DOI: 10.1088/1748-9326/ac9b50
Scopus
Zitationen: 11
Web of Science
Zitationen: 11
Dimensions
Zitationen: 17
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 01.11.2022
Sprache Englisch
Identifikator ISSN: 1748-9326
KITopen-ID: 1000152513
HGF-Programm 12.11.22 (POF IV, LK 01) Managed ecosystems as sources and sinks of GHGs
Erschienen in Environmental Research Letters
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 17
Heft 11
Seiten Art.-Nr.: 114024
Vorab online veröffentlicht am 31.10.2022
Schlagwörter agricultural soils, nitrous oxide, greenhouse gas, mitigation, evidence synthesis, meta-analysis
Nachgewiesen in Scopus
Dimensions
Web of Science
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