| Autor: |
János Balogh, Zoltán Nagy, Zoltán Tuba, B. Grosz, Tamás Weidinger, Szilárd Czóbel, Evelin Ramóna Péli, Krisztina Pintér, Attila Machon, László Horváth, Szilvia Fóti, Ernő Führer |
| Rok vydání: |
2010 |
| Předmět: |
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| Zdroj: |
Agriculture, Ecosystems & Environment. 139:255-263 |
| ISSN: |
0167-8809 |
| DOI: |
10.1016/j.agee.2010.08.011 |
| Popis: |
Nitrous oxide (N2O) is emitted into the atmosphere in substantial quantities as an intermediate product of mainly denitrification processes and soil nitrification. N2O emission from Hungarian sandy and loess type soils has been measured between August 2002 and December 2004. The effects of soil parameters and different farming activities (grazing exclusion, irrigation and mineral fertilization) on the rate of emission were investigated. Soil N2O efflux was determined by measuring the accumulation of N2O in 10 parallel small (V = 400 cm3, A = 80 cm2) static chambers. Samples were taken with evacuated tubes followed by gas chromatography–mass spectrometry analysis. Emission from sandy grassland under extensive farming proved to be negligible below soil temperature of 5 °C, the mean fluxes at tsoil > 10 °C and tsoil |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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