Seasonal variation in N2O emissions from urine patches: Effects of urine concentration, soil compaction and dung
| Autor: | A. Vos, J.W. van Groenigen, F.J.E. van der Bolt, Peter Kuikman, Gerard L. Velthof |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
animal manures
distikstofmonoxide Compaction Soil Science netherlands Plant Science Pasture soil compaction grazed grassland Animal science emission greenhouse gases Grazing Alterra - Centre for Water and Climate medicine Alterra - Centrum Bodem dierlijke meststoffen Mollisol Nitrogen cycle geography WIMEK denitrification geography.geographical_feature_category nitrous oxide Ecology Soil Science Centre Seasonality PE&RC medicine.disease bodemverdichting fluxes pastures nitrous-oxide emissions inventory pasture emissie Soil structure feces weiden Soil compaction Environmental science faeces broeikasgassen Alterra - Centrum Water en Klimaat |
| Zdroj: | Plant and Soil 273 (2005) 1/2 Plant and Soil, 273(1/2), 15-27 |
| ISSN: | 1573-5036 0032-079X |
| DOI: | 10.1007/s11104-004-6261-2 |
| Popis: | Urine patches in pastures rank among the highest sources of the greenhouse gas nitrous oxide (N2O) from animal production systems. Previous laboratory studies indicate that N2O emissions for urine-N in pastures may increase with a factor five or eight in combination with soil compaction and dung, respectively. These combinations of urine, compaction and dung occur regularly in pastures, especially in so-called camping areas. The aims of this study were (i) to experimentally quantify the effect of compaction and dung on emission factors of N2O from urine patches under field conditions; (ii) to detect any seasonal changes in emission from urine patches; and (iii) to quantify possible effects of urine concentration and -volume. A series of experiments on the effects of compaction, dung, urine-N concentration and urine volume was set up at a pasture on a sandy soil (typic Endoaquoll) in Wageningen, the Netherlands. Artificial urine was applied 8 times in the period August 2000–November 2001, and N2O emissions were monitored for a minimum of 1 month after each application. The average emission factor for urine-only treatments was 1.55%. Over the whole period, only soil compaction had a clear significant effect, raising the average N2O emissions from urine patches from 1.30% to 2.92% of the applied N. Dung had no consistent effect; although it increased the average emissions from 1.60% to 2.82%, this was clearly significant (P 50%, avoiding camping areas in pastures, and on avoiding grazing under moist soil conditions. Greenhouse gas budgets for grazing conditions should include the effects of soil compaction and dung to represent actual emissions. |
| Databáze: | OpenAIRE |
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