Environmental and anthropogenic drivers of soil methane fluxes in forests: Global patterns and among‐biomes differences
Forest soils are the most important terrestrial sink of atmospheric methane (CH4). Climatic, soil and anthropogenic drivers affect CH4 fluxes, but it is poorly known the relative weight of each driver and whether all drivers have similar effects across forest biomes. We compiled a database of 478 in...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Español |
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Wiley & Sons
2020
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/8433 https://onlinelibrary.wiley.com/doi/abs/10.1111/gcb.15331 https://doi.org/10.1111/gcb.15331 |
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| author | Gatica, Gabriel Fernandez, María Elena Juliarena, Maria Paula Gyenge, Javier |
| author_browse | Fernandez, María Elena Gatica, Gabriel Gyenge, Javier Juliarena, Maria Paula |
| author_facet | Gatica, Gabriel Fernandez, María Elena Juliarena, Maria Paula Gyenge, Javier |
| author_sort | Gatica, Gabriel |
| collection | INTA Digital |
| description | Forest soils are the most important terrestrial sink of atmospheric methane (CH4). Climatic, soil and anthropogenic drivers affect CH4 fluxes, but it is poorly known the relative weight of each driver and whether all drivers have similar effects across forest biomes. We compiled a database of 478 in situ estimations of CH4 fluxes in forest soils from 191 peer‐reviewed studies. All forest biomes (boreal, temperate, tropical and subtropical) but savannahs act on average as CH4 sinks, which presented positive fluxes in 65% of the sites. Mixed effects models showed that combined climatic and edaphic variables had the best support, but anthropogenic factors did not have a significant effect on CH4 fluxes at global scale. This model explained only 19% of the variance in soil CH4 flux which decreased with declines in precipitation and increases in temperature, and with increases in soil organic carbon, bulk density and soil acidification. The effects of these drivers were inconsistent across biomes, increasing the model explanation of observed variance to 34% when the drivers have a different slope for each biome. Despite this limited explanatory value which could be related to the use of soil variables calculated at coarse scale (~1 km), our study shows that soil CH4 fluxes in forests are determined by different environmental variables in different biomes. The most sensitive system to all studied drivers were the temperate forests, while boreal forests were insensitive to climatic variables, but highly sensitive to edaphic factors. Subtropical forests and savannahs responded similarly to climatic variables, but differed in their response to soil factors. Our results suggest that the increase in temperature predicted in the framework of climate change would promote CH4 emission (or reduce CH4 sink) in subtropical and savannah forests, have no influence in boreal and temperate forests and promote uptake in tropical forests. |
| format | info:ar-repo/semantics/artículo |
| id | INTA8433 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Español |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Wiley & Sons |
| publisherStr | Wiley & Sons |
| record_format | dspace |
| spelling | INTA84332025-10-31T10:23:00Z Environmental and anthropogenic drivers of soil methane fluxes in forests: Global patterns and among‐biomes differences Gatica, Gabriel Fernandez, María Elena Juliarena, Maria Paula Gyenge, Javier Bosques Suelo Forestal Gases de Efecto Invernadero Metano Plantación Forestal Calentamiento Global Forest Forest Soils Greenhouse Gases Methane Forest Plantations Global Warming Forest soils are the most important terrestrial sink of atmospheric methane (CH4). Climatic, soil and anthropogenic drivers affect CH4 fluxes, but it is poorly known the relative weight of each driver and whether all drivers have similar effects across forest biomes. We compiled a database of 478 in situ estimations of CH4 fluxes in forest soils from 191 peer‐reviewed studies. All forest biomes (boreal, temperate, tropical and subtropical) but savannahs act on average as CH4 sinks, which presented positive fluxes in 65% of the sites. Mixed effects models showed that combined climatic and edaphic variables had the best support, but anthropogenic factors did not have a significant effect on CH4 fluxes at global scale. This model explained only 19% of the variance in soil CH4 flux which decreased with declines in precipitation and increases in temperature, and with increases in soil organic carbon, bulk density and soil acidification. The effects of these drivers were inconsistent across biomes, increasing the model explanation of observed variance to 34% when the drivers have a different slope for each biome. Despite this limited explanatory value which could be related to the use of soil variables calculated at coarse scale (~1 km), our study shows that soil CH4 fluxes in forests are determined by different environmental variables in different biomes. The most sensitive system to all studied drivers were the temperate forests, while boreal forests were insensitive to climatic variables, but highly sensitive to edaphic factors. Subtropical forests and savannahs responded similarly to climatic variables, but differed in their response to soil factors. Our results suggest that the increase in temperature predicted in the framework of climate change would promote CH4 emission (or reduce CH4 sink) in subtropical and savannah forests, have no influence in boreal and temperate forests and promote uptake in tropical forests. EEA Balcarce Fil: Gatica, Gabriel. Universidad Nacional del Centro de la Provincia de Buenos Aires. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires Fil: Fernández, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Agencia de Extensión Rural Tandil; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible Balcarce; Argentina Fil: Juliarena, María Paula. Universidad Nacional del Centro de la Provincia de Buenos Aires. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas; Argentina Fil: Gyenge, Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Agencia de Extensión Rural Tandil; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible Balcarce; Argentina 2020-12-16T10:51:50Z 2020-12-16T10:51:50Z 2020-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/8433 https://onlinelibrary.wiley.com/doi/abs/10.1111/gcb.15331 1365-2486 https://doi.org/10.1111/gcb.15331 spa info:eu-repo/semantics/restrictedAccess application/pdf Wiley & Sons Global Change Biology 26 (11) : 6604– 6615 (November 2020) |
| spellingShingle | Bosques Suelo Forestal Gases de Efecto Invernadero Metano Plantación Forestal Calentamiento Global Forest Forest Soils Greenhouse Gases Methane Forest Plantations Global Warming Gatica, Gabriel Fernandez, María Elena Juliarena, Maria Paula Gyenge, Javier Environmental and anthropogenic drivers of soil methane fluxes in forests: Global patterns and among‐biomes differences |
| title | Environmental and anthropogenic drivers of soil methane fluxes in forests: Global patterns and among‐biomes differences |
| title_full | Environmental and anthropogenic drivers of soil methane fluxes in forests: Global patterns and among‐biomes differences |
| title_fullStr | Environmental and anthropogenic drivers of soil methane fluxes in forests: Global patterns and among‐biomes differences |
| title_full_unstemmed | Environmental and anthropogenic drivers of soil methane fluxes in forests: Global patterns and among‐biomes differences |
| title_short | Environmental and anthropogenic drivers of soil methane fluxes in forests: Global patterns and among‐biomes differences |
| title_sort | environmental and anthropogenic drivers of soil methane fluxes in forests global patterns and among biomes differences |
| topic | Bosques Suelo Forestal Gases de Efecto Invernadero Metano Plantación Forestal Calentamiento Global Forest Forest Soils Greenhouse Gases Methane Forest Plantations Global Warming |
| url | http://hdl.handle.net/20.500.12123/8433 https://onlinelibrary.wiley.com/doi/abs/10.1111/gcb.15331 https://doi.org/10.1111/gcb.15331 |
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