Hotspots of gross emissions from the land use sector: patterns, uncertainties, and leading emission sources for the period 2000–2005 in the tropics
| Autor: | Mario Herrero, Louis V. Verchot, Sytze de Bruin, Benjamin Poulter, Changsheng Li, Martin Herold, John Stuiver, Stephen M. Ogle, Mariana C. Rufino, Klaus Butterbach-Bahl, Rosa Maria Roman-Cuesta, Christopher Martius, Todd S. Rosenstock |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Peat
010504 meteorology & atmospheric sciences lcsh:Life Climate change Rainforest 010501 environmental sciences 01 natural sciences 7. Clean energy Laboratory of Geo-information Science and Remote Sensing Environmental protection Deforestation lcsh:QH540-549.5 11. Sustainability ddc:550 Life Science Laboratorium voor Geo-informatiekunde en Remote Sensing Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Earth-Surface Processes Land use Ecology business.industry lcsh:QE1-996.5 Tropics 15. Life on land PE&RC lcsh:Geology Earth sciences lcsh:QH501-531 13. Climate action Agriculture Greenhouse gas Environmental science lcsh:Ecology business |
| Zdroj: | Biogeosciences, Vol 13, Iss 14, Pp 4253-4269 (2016) Biogeosciences, 13 (14), 4253-4269 Biogeosciences 13 (2016) 14 Biogeosciences, 13(14), 4253-4269 Biogeosciences |
| ISSN: | 1726-4189 1726-4170 |
| Popis: | According to the latest report of the Intergovernmental Panel on Climate Change (IPCC), emissions must be cut by 41–72 % below 2010 levels by 2050 for a likely chance of containing the global mean temperature increase to 2 °C. The AFOLU sector (Agriculture, Forestry and Other Land Use) contributes roughly a quarter ( ∼ 10–12 Pg CO2e yr−1) of the net anthropogenic GHG emissions mainly from deforestation, fire, wood harvesting, and agricultural emissions including croplands, paddy rice, and livestock. In spite of the importance of this sector, it is unclear where the regions with hotspots of AFOLU emissions are and how uncertain these emissions are. Here we present a novel, spatially comparable dataset containing annual mean estimates of gross AFOLU emissions (CO2, CH4, N2O), associated uncertainties, and leading emission sources, in a spatially disaggregated manner (0.5°) for the tropics for the period 2000–2005. Our data highlight the following: (i) the existence of AFOLU emissions hotspots on all continents, with particular importance of evergreen rainforest deforestation in Central and South America, fire in dry forests in Africa, and both peatland emissions and agriculture in Asia; (ii) a predominant contribution of forests and CO2 to the total AFOLU emissions (69 %) and to their uncertainties (98 %); (iii) higher gross fluxes from forests, which coincide with higher uncertainties, making agricultural hotspots appealing for effective mitigation action; and (iv) a lower contribution of non-CO2 agricultural emissions to the total gross emissions (ca. 25 %), with livestock (15.5 %) and rice (7 %) leading the emissions. Gross AFOLU tropical emissions of 8.0 (5.5–12.2) were in the range of other databases (8.4 and 8.0 Pg CO2e yr−1 in FAOSTAT and the Emissions Database for Global Atmospheric Research (EDGAR) respectively), but we offer a spatially detailed benchmark for monitoring progress in reducing emissions from the land sector in the tropics. The location of the AFOLU hotspots of emissions and data on their associated uncertainties will assist national policy makers, investors, and other decision-makers who seek to understand the mitigation potential of the AFOLU sector. |
| Databáze: | OpenAIRE |
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