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| Hansen, Sissel; Rivedal, Synnøve; Øpstad, Samson; Heggset, Sverre; Deelstra, Johannes; Dörsch, Peter. |
| We studied greenhouse gas (GHG) emissions (CH4 and N2O), agronomic performance and soil conditions in a grassland on an inverted peat soil that was earlier cultivated and tile-drained, and compared it with grassland on conventionally tile-drained peat. A neighbouring undrained peat was used as a reference for GHG emissions. Preliminary results (2-year field data) revealed reduced GHG emissions from the inverted peat relative to the tile-drained peat, mainly caused by lower CH4 emissions. Our data suggest that peat inversion can improve the agronomic feasibility of forage production in cool-moist areas with abundant organic soils, and can offer a way of agronomic adaptation to a climate with increased precipitation. At the same time it may reduce the GHG... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality; Air and water emissions; Irrigation and drainage. |
| Ano: 2016 |
URL: http://orgprints.org/31203/1/Hansen%20et%20al%202016%20GHG%20emissions_agronomic%20feasibility_%20inverted%20peat%20soil.%20%20EGF%204-8%20Sept.%20Trondheim%2C%20Abstract.pdf |
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| Regina, Kristiina; Simojoki, Asko; Alakukku, Laura; Silvennoinen, Hanna; Dörsch, Peter; Keller, Thomas. |
| Compaction occasionally increased N2O in soil air. No large differences in soil air composition, N2O emissions or moisture content were found between the treatments. The N2O concentrations at 15, 30, 50 and 70 cm depths correlated positively with the emission of N2O from the soil in both fields (r=0.4-0.7***). The subsoil O2 concentrations correlated negatively with N2O emission, but only at the Finnish site. The results suggest that subsoil compaction does not significantly increase N2O emissions from these soils 15-30 years after compaction. This may indicate a minor role of subsoil in the production of N2O compared with topsoil. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil. |
| Ano: 2011 |
URL: http://orgprints.org/19576/1/Regina.pdf |
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