Potential strong contribution of future anthropogenic land-use and land-cover change to the terrestrial carbon cycle

Anthropogenic land-use and land cover changes (LULCC) affect global climate and global terrestrial carbon (C) cycle. However, relatively few studies have quantified the impacts of future LULCC on terrestrial carbon cycle. Here, using Earth system model simulations performed with and without future L...

Descripción completa

Detalles Bibliográficos
Autores Principales: Quesada, Benjamin, Arneth, Almut, Robertson, Eddy, de Noblet-Ducoudre, Nathalie
Formato: Artículo (Article)
Lenguaje:Inglés (English)
Publicado: IOP Publishing 2018
Materias:
Acceso en línea:https://repository.urosario.edu.co/handle/10336/26769
https://doi.org/10.1088/1748-9326/aac4c3
id ir-10336-26769
recordtype dspace
spelling ir-10336-267692020-08-19T14:40:12Z Potential strong contribution of future anthropogenic land-use and land-cover change to the terrestrial carbon cycle Fuerte contribución potencial del futuro cambio antropogénico del uso de la tierra y la cobertura de la tierra al ciclo del carbono terrestre Quesada, Benjamin Arneth, Almut Robertson, Eddy de Noblet-Ducoudre, Nathalie Carbon cycle Attribution Land cover changes Deforestation Greening Land carbon storage Earth system model Anthropogenic land-use and land cover changes (LULCC) affect global climate and global terrestrial carbon (C) cycle. However, relatively few studies have quantified the impacts of future LULCC on terrestrial carbon cycle. Here, using Earth system model simulations performed with and without future LULCC, under the RCP8.5 scenario, we find that in response to future LULCC, the carbon cycle is substantially weakened: browning, lower ecosystem C stocks, higher C loss by disturbances and higher C turnover rates are simulated. Projected global greening and land C storage are dampened, in all models, by 22% and 24% on average and projected C loss by disturbances enhanced by ?49% when LULCC are taken into account. By contrast, global net primary productivity is found to be only slightly affected by LULCC (robust +4% relative enhancement compared to all forcings, on average). LULCC is projected to be a predominant driver of future C changes in regions like South America and the southern part of Africa. LULCC even cause some regional reversals of projected increased C sinks and greening, particularly at the edges of the Amazon and African rainforests. Finally, in most carbon cycle responses, direct removal of C dominates over the indirect CO2 fertilization due to LULCC. In consequence, projections of land C sequestration potential and Earth’s greening could be substantially overestimated just because of not fully accounting for LULCC. 2018-06-06 2020-08-19T14:40:12Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion EISSN: 1748-9326 https://repository.urosario.edu.co/handle/10336/26769 https://doi.org/10.1088/1748-9326/aac4c3 eng info:eu-repo/semantics/openAccess application/pdf IOP Publishing Environmental Research Letters
institution EdocUR - Universidad del Rosario
collection DSpace
language Inglés (English)
topic Carbon cycle
Attribution
Land cover changes
Deforestation
Greening
Land carbon storage
Earth system model
spellingShingle Carbon cycle
Attribution
Land cover changes
Deforestation
Greening
Land carbon storage
Earth system model
Quesada, Benjamin
Arneth, Almut
Robertson, Eddy
de Noblet-Ducoudre, Nathalie
Potential strong contribution of future anthropogenic land-use and land-cover change to the terrestrial carbon cycle
description Anthropogenic land-use and land cover changes (LULCC) affect global climate and global terrestrial carbon (C) cycle. However, relatively few studies have quantified the impacts of future LULCC on terrestrial carbon cycle. Here, using Earth system model simulations performed with and without future LULCC, under the RCP8.5 scenario, we find that in response to future LULCC, the carbon cycle is substantially weakened: browning, lower ecosystem C stocks, higher C loss by disturbances and higher C turnover rates are simulated. Projected global greening and land C storage are dampened, in all models, by 22% and 24% on average and projected C loss by disturbances enhanced by ?49% when LULCC are taken into account. By contrast, global net primary productivity is found to be only slightly affected by LULCC (robust +4% relative enhancement compared to all forcings, on average). LULCC is projected to be a predominant driver of future C changes in regions like South America and the southern part of Africa. LULCC even cause some regional reversals of projected increased C sinks and greening, particularly at the edges of the Amazon and African rainforests. Finally, in most carbon cycle responses, direct removal of C dominates over the indirect CO2 fertilization due to LULCC. In consequence, projections of land C sequestration potential and Earth’s greening could be substantially overestimated just because of not fully accounting for LULCC.
format Artículo (Article)
author Quesada, Benjamin
Arneth, Almut
Robertson, Eddy
de Noblet-Ducoudre, Nathalie
author_facet Quesada, Benjamin
Arneth, Almut
Robertson, Eddy
de Noblet-Ducoudre, Nathalie
author_sort Quesada, Benjamin
title Potential strong contribution of future anthropogenic land-use and land-cover change to the terrestrial carbon cycle
title_short Potential strong contribution of future anthropogenic land-use and land-cover change to the terrestrial carbon cycle
title_full Potential strong contribution of future anthropogenic land-use and land-cover change to the terrestrial carbon cycle
title_fullStr Potential strong contribution of future anthropogenic land-use and land-cover change to the terrestrial carbon cycle
title_full_unstemmed Potential strong contribution of future anthropogenic land-use and land-cover change to the terrestrial carbon cycle
title_sort potential strong contribution of future anthropogenic land-use and land-cover change to the terrestrial carbon cycle
publisher IOP Publishing
publishDate 2018
url https://repository.urosario.edu.co/handle/10336/26769
https://doi.org/10.1088/1748-9326/aac4c3
_version_ 1676074162304581632
score 12,131701