Biochar influences on soil CO2 and CH4 fluxes in response to wetting and drying cycles for a forest soil

Abstract Biochar has been the focus of significant research efforts in agriculture, but little research has been conducted in forested ecosystems. Here, we assess CO2 and CH4 fluxes from a forest soil in response to biochar additions using a before-after-control-intervention experimental design. Soi...

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Autores principales:	Mark S. Johnson, Cameron Webster, Rachhpal S. Jassal, Iain Hawthorne, T. Andrew Black
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9607698ac9ed4e20a435dec6538403fb
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spelling	oai:doaj.org-article:9607698ac9ed4e20a435dec6538403fb2021-12-02T12:30:25ZBiochar influences on soil CO2 and CH4 fluxes in response to wetting and drying cycles for a forest soil10.1038/s41598-017-07224-62045-2322https://doaj.org/article/9607698ac9ed4e20a435dec6538403fb2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07224-6https://doaj.org/toc/2045-2322Abstract Biochar has been the focus of significant research efforts in agriculture, but little research has been conducted in forested ecosystems. Here, we assess CO2 and CH4 fluxes from a forest soil in response to biochar additions using a before-after-control-intervention experimental design. Soil CO2 and CH4 fluxes were measured over a series of wetting cycles by coupling soil mesocosms equipped with auto-chambers to a laser-based spectrometer for high-frequency measurements of gas fluxes and related soil processes. We found that soil CO2 fluxes were higher and CH4 fluxes were less negative (e.g. reduced CH4 uptake) for the biochar-amended soil compared to the no biochar condition. Furthermore, biochar improved soil infiltrability under wet conditions, and enhanced soil moisture levels under dry conditions. Biochar additions shifted the point of maximum soil respiration (i.e. soil CO2 efflux) to a slightly wetter soil moisture level. The point of maximum CH4 uptake was also shifted to a slightly wetter moisture level for soil with biochar. Overall differences in soil gas fluxes were found to be minor compared to the increase in soil carbon resulting from the biochar addition. Biochar may thus contribute to improved forest management through increases to soil carbon stocks and improved soil moisture levels.Mark S. JohnsonCameron WebsterRachhpal S. JassalIain HawthorneT. Andrew BlackNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mark S. Johnson Cameron Webster Rachhpal S. Jassal Iain Hawthorne T. Andrew Black Biochar influences on soil CO2 and CH4 fluxes in response to wetting and drying cycles for a forest soil
description	Abstract Biochar has been the focus of significant research efforts in agriculture, but little research has been conducted in forested ecosystems. Here, we assess CO2 and CH4 fluxes from a forest soil in response to biochar additions using a before-after-control-intervention experimental design. Soil CO2 and CH4 fluxes were measured over a series of wetting cycles by coupling soil mesocosms equipped with auto-chambers to a laser-based spectrometer for high-frequency measurements of gas fluxes and related soil processes. We found that soil CO2 fluxes were higher and CH4 fluxes were less negative (e.g. reduced CH4 uptake) for the biochar-amended soil compared to the no biochar condition. Furthermore, biochar improved soil infiltrability under wet conditions, and enhanced soil moisture levels under dry conditions. Biochar additions shifted the point of maximum soil respiration (i.e. soil CO2 efflux) to a slightly wetter soil moisture level. The point of maximum CH4 uptake was also shifted to a slightly wetter moisture level for soil with biochar. Overall differences in soil gas fluxes were found to be minor compared to the increase in soil carbon resulting from the biochar addition. Biochar may thus contribute to improved forest management through increases to soil carbon stocks and improved soil moisture levels.
format	article
author	Mark S. Johnson Cameron Webster Rachhpal S. Jassal Iain Hawthorne T. Andrew Black
author_facet	Mark S. Johnson Cameron Webster Rachhpal S. Jassal Iain Hawthorne T. Andrew Black
author_sort	Mark S. Johnson
title	Biochar influences on soil CO2 and CH4 fluxes in response to wetting and drying cycles for a forest soil
title_short	Biochar influences on soil CO2 and CH4 fluxes in response to wetting and drying cycles for a forest soil
title_full	Biochar influences on soil CO2 and CH4 fluxes in response to wetting and drying cycles for a forest soil
title_fullStr	Biochar influences on soil CO2 and CH4 fluxes in response to wetting and drying cycles for a forest soil
title_full_unstemmed	Biochar influences on soil CO2 and CH4 fluxes in response to wetting and drying cycles for a forest soil
title_sort	biochar influences on soil co2 and ch4 fluxes in response to wetting and drying cycles for a forest soil
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/9607698ac9ed4e20a435dec6538403fb
work_keys_str_mv	AT marksjohnson biocharinfluencesonsoilco2andch4fluxesinresponsetowettinganddryingcyclesforaforestsoil AT cameronwebster biocharinfluencesonsoilco2andch4fluxesinresponsetowettinganddryingcyclesforaforestsoil AT rachhpalsjassal biocharinfluencesonsoilco2andch4fluxesinresponsetowettinganddryingcyclesforaforestsoil AT iainhawthorne biocharinfluencesonsoilco2andch4fluxesinresponsetowettinganddryingcyclesforaforestsoil AT tandrewblack biocharinfluencesonsoilco2andch4fluxesinresponsetowettinganddryingcyclesforaforestsoil
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Biochar influences on soil CO2 and CH4 fluxes in response to wetting and drying cycles for a forest soil

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