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...
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Acceso en línea: | https://repository.urosario.edu.co/handle/10336/26769 https://doi.org/10.1088/1748-9326/aac4c3 |
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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 |
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EdocUR - Universidad del Rosario |
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language |
Inglés (English) |
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Carbon cycle Attribution Land cover changes Deforestation Greening Land carbon storage Earth system model |
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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 |