VerheijenJefferyVanEtAl2013

Référence

Verheijen, F.G.A., Jeffery, S., Van Der Velde, M., Penizek, V., Beland, M., Bastos, A.C., Keizer, J.J. (2013) Reductions in soil surface albedo as a function of biochar application rate: Implications for global radiative forcing. Environmental Research Letters, 8(4). (Scopus )

Résumé

Biochar can be defined as pyrolysed (charred) biomass produced for application to soils with the aim of mitigating global climate change while improving soil functions. Sustainable biochar application to soils has been estimated to reduce global greenhouse gas emissions by 71-130 Pg CO 2-Ce over 100 years, indicating an important potential to mitigate climate change. However, these estimates ignored changes in soil surface reflection by the application of dark-coloured biochar. Through a laboratory experiment we show a strong tendency for soil surface albedo to decrease as a power decay function with increasing biochar application rate, depending on soil moisture content, biochar application method and land use. Surface application of biochar resulted in strong reductions in soil surface albedo even at relatively low application rates. As a first assessment of the implications for climate change mitigation of these biochar-albedo relationships, we applied a first order global energy balance model to compare negative radiative forcings (from avoided CO2 emissions) with positive radiative forcings (from reduced soil surface albedos). For a global-scale biochar application equivalent to 120 t ha-1, we obtained reductions in negative radiative forcings of 5 and 11% for croplands and 11 and 23% for grasslands, when incorporating biochar into the topsoil or applying it to the soil surface, respectively. For a lower global biochar application rate (equivalent to 10 t ha-1), these reductions amounted to 13 and 44% for croplands and 28 and 94% for grasslands. Thus, our findings revealed the importance of including changes in soil surface albedo in studies assessing the net climate change mitigation potential of biochar, and we discuss the urgent need for field studies and more detailed spatiotemporal modelling. © 2013 IOP Publishing Ltd.

Format EndNote

Vous pouvez importer cette référence dans EndNote.

Format BibTeX-CSV

Vous pouvez importer cette référence en format BibTeX-CSV.

Format BibTeX

Vous pouvez copier l'entrée BibTeX de cette référence ci-bas, ou l'importer directement dans un logiciel tel que JabRef .

@ARTICLE { VerheijenJefferyVanEtAl2013,
    AUTHOR = { Verheijen, F.G.A. and Jeffery, S. and Van Der Velde, M. and Penizek, V. and Beland, M. and Bastos, A.C. and Keizer, J.J. },
    TITLE = { Reductions in soil surface albedo as a function of biochar application rate: Implications for global radiative forcing },
    JOURNAL = { Environmental Research Letters },
    YEAR = { 2013 },
    VOLUME = { 8 },
    NUMBER = { 4 },
    NOTE = { cited By 4 },
    ABSTRACT = { Biochar can be defined as pyrolysed (charred) biomass produced for application to soils with the aim of mitigating global climate change while improving soil functions. Sustainable biochar application to soils has been estimated to reduce global greenhouse gas emissions by 71-130 Pg CO 2-Ce over 100 years, indicating an important potential to mitigate climate change. However, these estimates ignored changes in soil surface reflection by the application of dark-coloured biochar. Through a laboratory experiment we show a strong tendency for soil surface albedo to decrease as a power decay function with increasing biochar application rate, depending on soil moisture content, biochar application method and land use. Surface application of biochar resulted in strong reductions in soil surface albedo even at relatively low application rates. As a first assessment of the implications for climate change mitigation of these biochar-albedo relationships, we applied a first order global energy balance model to compare negative radiative forcings (from avoided CO2 emissions) with positive radiative forcings (from reduced soil surface albedos). For a global-scale biochar application equivalent to 120 t ha-1, we obtained reductions in negative radiative forcings of 5 and 11% for croplands and 11 and 23% for grasslands, when incorporating biochar into the topsoil or applying it to the soil surface, respectively. For a lower global biochar application rate (equivalent to 10 t ha-1), these reductions amounted to 13 and 44% for croplands and 28 and 94% for grasslands. Thus, our findings revealed the importance of including changes in soil surface albedo in studies assessing the net climate change mitigation potential of biochar, and we discuss the urgent need for field studies and more detailed spatiotemporal modelling. © 2013 IOP Publishing Ltd. },
    ART_NUMBER = { 044008 },
    AUTHOR_KEYWORDS = { biochar; geo-engineering; radiative forcing; soil; spectroscopy },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1088/1748-9326/8/4/044008 },
    KEYWORDS = { Atmospheric radiation; Carbon dioxide; Climate change; Greenhouse gases; Soil moisture; Soils; Spectroscopy, Bio chars; Climate change mitigation; geo-engineering; Global climate changes; Laboratory experiments; Radiative forcings; Spatio-temporal modelling; Surface applications, Solar radiation, albedo; biomass; climate change; energy balance; global climate; greenhouse gas; radiative forcing; soil surface; spectroscopy },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84889008484&partnerID=40&md5=d45b409f1656420b78ef8f3b966db145 },
}

********************************************************** ***************** Facebook Twitter *********************** **********************************************************

Abonnez-vous à
l'Infolettre du CEF!

********************************************************** ***************** Pub - Mycorhizes_2019 ****************** **********************************************************

********************************************************** ***************** Pub - Symphonies_Boreales ****************** **********************************************************

********************************************************** ***************** Boîte à trucs *************** **********************************************************

CEF-Référence
La référence vedette !

Jérémie Alluard (2016) Les statistiques au moments de la rédaction 

  • Ce document a pour but de guider les étudiants à intégrer de manière appropriée une analyse statistique dans leur rapport de recherche.

Voir les autres...