Limits of agricultural greenhouse gas calculators to predict soil N2O and CH4 fluxes in tropical agriculture
| Autor: | Emma Keller, Jonathan Hillier, Proyuth Ly, Ngonidzashe Chirinda, George Nyamadzawo, Andreas de Neergaard, Eva K. Wollenberg, Daniella Malin, Jørgen E. Olesen, Ruth Metzel, Todd S. Rosenstock, Meryl Richards, Quynh Duong Vu, Myles Oelofse |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Multidisciplinary
Food security 010504 meteorology & atmospheric sciences Technological change business.industry Empirical modelling Tropics Climate change klim 04 agricultural and veterinary sciences 01 natural sciences Agricultural economics Article Climate change mitigation Agriculture Greenhouse gas Journal Article 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science business 0105 earth and related environmental sciences |
| Zdroj: | Scientific Reports Richards, M, Metzel, R, Chirinda, N, Ly, P, Nyamadzawo, G, Duong Vu, Q, de Neergaard, A, Oelofse, M, Wollenberg, E, Keller, E, Malin, D, Olesen, J E, Hillier, J & Rosenstock, T S 2016, ' Limits of agricultural greenhouse gas calculators to predict soil N 2 O and CH 4 fluxes in tropical agriculture ', Scientific Reports, vol. 6, 26279 . https://doi.org/10.1038/srep26279 Richards, M, Metzel, R, Chirinda, N, Ly, P, Nyamadzawo, G, Duong Vu, Q, de Neergaard, A, Oelofse, M, Wollenberg, E, Keller, E, Malin, D, Olesen, J E, Hillier, J & Rosenstock, T 2016, ' Limits of agricultural greenhouse gas calculators to predict soil N 2 O and CH 4 fluxes in tropical agriculture ', Scientific Reports, vol. 6, 26279 . https://doi.org/10.1038/srep26279 |
| ISSN: | 2045-2322 |
| Popis: | Demand for tools to rapidly assess greenhouse gas impacts from policy and technological change in the agricultural sector has catalyzed the development of ‘GHG calculators’— simple accounting approaches that use a mix of emission factors and empirical models to calculate GHG emissions with minimal input data. GHG calculators, however, rely on models calibrated from measurements conducted overwhelmingly under temperate, developed country conditions. Here we show that GHG calculators may poorly estimate emissions in tropical developing countries by comparing calculator predictions against measurements from Africa, Asia, and Latin America. Estimates based on GHG calculators were greater than measurements in 70% of the cases, exceeding twice the measured flux nearly half the time. For 41% of the comparisons, calculators incorrectly predicted whether emissions would increase or decrease with a change in management. These results raise concerns about applying GHG calculators to tropical farming systems and emphasize the need to broaden the scope of the underlying data. |
| Databáze: | OpenAIRE |
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