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High Application Rates of Biochar to Mitigate N$_{2}$O Emissions From a N-Fertilized Tropical Soil Under Warming Conditions

Rittl, Tatiana F.; Oliveira, Dener M. S.; Canisares, Luiza P.; Sagrilo, Edvaldo; Butterbach-Bahl, Klaus; Dannenmann, Michael; Cerri, Carlos E. P.

Abstract:
Biochar application has been suggested as a strategy to decrease nitrous oxide emissions from agricultural soils while increasing soil C stocks, especially in tropical regions. Climate change, specifically increasing temperatures, will affect soil environmental conditions and thereby directly influence soil N$_{2}$O fluxes. Here, we show that Miscanthus giganteus biochar applied at high rates suppresses the typical warming-induced stimulation of N$_{2}$O emissions. Specifically, in experiments with high biochar addition (25 Mg ha$^{-1}$), N$_{2}$O emissions under 40°C were equal to or even lower compared to those observed at 20°C. In this sense, the mitigation potential of biochar for N$_{2}$O emissions might increase under the auspices of climate change.

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Verlagsausgabe §
DOI: 10.5445/IR/1000129842
Veröffentlicht am 05.03.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung (IMK)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 13.01.2021
Sprache Englisch
Identifikator ISSN: 2296-665X
KITopen-ID: 1000129842
Erschienen in Frontiers in Environmental Science
Verlag Frontiers Media
Band 8
Seiten Art.-Nr.: 611873
Nachgewiesen in Scopus
Web of Science
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