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The greenhouse gas emission effects of rewetting drained peatlands and growing wetland plants for biogas fuel production
Water Technology Group, HZ University of Applied Sciences, Vlissingen, the Netherlands.
Halmstad University, School of Business, Innovation and Sustainability, The Rydberg Laboratory for Applied Sciences (RLAS).ORCID iD: 0000-0003-3068-5269
Halmstad University, School of Business, Innovation and Sustainability, The Rydberg Laboratory for Applied Sciences (RLAS).ORCID iD: 0000-0003-4297-8683
Halmstad University, School of Business, Innovation and Sustainability, The Rydberg Laboratory for Applied Sciences (RLAS).ORCID iD: 0000-0001-9157-7400
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2021 (English)In: Journal of Environmental Management, ISSN 0301-4797, E-ISSN 1095-8630, Vol. 277, article id 111391Article in journal (Refereed) Published
Abstract [en]

Efforts to mitigate greenhouse gas (GHG) emissions are receiving increased attention among governmental and commercial actors. In recent years, the interest in paludiculture, i.e. the use of rewetted peatlands, has grown because of its potential to reduce GHG emissions by stopping soil decomposition. Moreover, cultivating wetland plants on rewetted peatlands for  bioenergy production that replaces fossil fuels in the transport sector, can contribute to additional GHG emission reductions. In this study, an analysis of literature data was conducted to obtain data on GHG emissions (CO2 and CH4) and biomass production from rewetted peatlands cultivated with two different wetland plant species: Phragmites australis (Pa) and Typha latifolia (Tl). In  addition, a  biogas experiment was carried out to investigate the biomethane yield of Pa and Tl biomass, and the reduction of global warming potential (GWP) by using biomethane as vehicle fuel. The results show that peatland rewetting can be an important measure to mitigate the GWP as it reduces GHG emissions from the soil, particularly on a 100-year timescale but also to some extent on a 20-year timescale. More specifically, rewetting of 1 km2 of peatland can result in  a  GWP reduction corresponding to  the  emissions from ±2600 average sized petrol cars annually. Growing Pa on rewetted peatlands reduces soil GHG emissions more than growing Tl, but Pa and Tl produced similar amounts of biomass and biomethane per land area. Our study concludes that Pa, because of a more pronounced GWP reduction, is the most suitable wetland plant to cultivate after peatland rewetting. © 2020 The Author(s). Published by Elsevier Ltd.

Place, publisher, year, edition, pages
Amsterdam: Elsevier, 2021. Vol. 277, article id 111391
Keywords [en]
Paludiculture, Greenhouse gas emissions, Peatland, Phragmites australis, Typha latifolia, Biomethane
National Category
Environmental Sciences Climate Research
Identifiers
URN: urn:nbn:se:hh:diva-43340DOI: 10.1016/j.jenvman.2020.111391ISI: 000593974400009PubMedID: 33049611Scopus ID: 2-s2.0-85092313103OAI: oai:DiVA.org:hh-43340DiVA, id: diva2:1479185
Part of project
CINDERELLA, Swedish Research Council Formas
Funder
Swedish Research Council Formas, 155-2014-1745Available from: 2020-10-26 Created: 2020-10-26 Last updated: 2021-01-20Bibliographically approved

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Martens et al., 2021(1837 kB)419 downloads
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Karlsson, NiklasEhde, Per MagnusMattsson, MarieWeisner, Stefan

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