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Catch Crop Known to Decrease N-leaching also Counteracts Soil CO2 Emissions
Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Bio- och miljösystemforskning (BLESS), Miljövetenskap.ORCID-id: 0000-0001-9157-7400
Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Bio- och miljösystemforskning (BLESS).
Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Bio- och miljösystemforskning (BLESS).ORCID-id: 0000-0003-4768-7498
2015 (engelsk)Inngår i: Journal of Resources and Ecology, ISSN 1674-764X, Vol. 6, nr 3, s. 180-185Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

CO2 emissions to the atmosphere were studied in a fertilized sandy agricultural soil with and without a catch crop sown into the main crop. The catch crop was grown primarily with the purpose to decrease N-leaching but this study also wanted to find out if the catch crop could have an effect in a climate change perspective. Plots with catch crop showed decreased CO2 emissions from the soil. Since previous results have shown that catch crops effectively decrease N-leaching we recommend growing catch crops as an effective measure for helping both the climate and the eutrophication issue. Seasonal variations in CO2 emissions were pronounced with maximum emissions from the fertilized agricultural soil in June and from an adjacent unmanaged grassland in August. From the plot with catch crop emissions decreased in July and August but somewhat increased later in the autumn. Fertilized agricultural soil showed a within-soil CO2 sink after harvest, i.e. within-soil CO2 uptake. Availability of NH4+ or NO3- in the soil seems to influence the within-soil CO2 sink, with NH4+ enforcing the sink while the same amount of NO3- instead increased CO2 emissions. © 2015 BioOne All rights reserved

sted, utgiver, år, opplag, sider
Beijing: Zhongguo Kexueyuan Dili Kexue yu Ziyuan Yanjiusuo / Chinese Academy of Sciences, Institute of Geographical Sciences and Natural Resources Research , 2015. Vol. 6, nr 3, s. 180-185
Emneord [en]
catch crop, N-leaching, grassland, CO2 sink, seasonal change
HSV kategori
Identifikatorer
URN: urn:nbn:se:hh:diva-29832DOI: 10.5814/j.issn.1674-764x.2015.03.007OAI: oai:DiVA.org:hh-29832DiVA, id: diva2:874868
Merknad

This research was supported by the Bertebo Foundation and the Brita and Sven Ramn Foundation.

Tilgjengelig fra: 2015-11-29 Laget: 2015-11-29 Sist oppdatert: 2019-10-08bibliografisk kontrollert

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