Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/S0026-265X(02)00057-7 |
| Title (Primary) | Modelling of environmental impact of different N-sources in soil/atmosphere system |
| Author | Bálint, A.; Heltai, G.; Nótás, E.; Tarr, Z.; Jung, K. |
| Source Titel | Microchemical Journal |
| Year | 2002 |
| Department | OEC; COE |
| Volume | 73 |
| Issue | 1-2 |
| Page From | 113 |
| Page To | 124 |
| Language | englisch |
| Keywords | N-Cycle; 15N-isotope; Meso-cosmos; Micro-cosmos |
| Abstract | Intensive application of N-fertilizer (inorganic and organic N-sources) may lead to water (nitrate leaching) and air (NOx, NH3 emission) pollution. Estimation and prediction of environmental hazard connected by N-fertilization requires modelling of N-cycling in agroecosystems. A three-level experimental system was built up for modelling the N-transformation processes running in different spatial and time scale in the soil/plant(biota)/atmosphere system. In 10 years harmonized series of micro-cosmos, meso-cosmos and field experiments using the stable isotopic 15N-tracer technique a solid data basis was collected for mathematical modelling. The three-compartmental mathematical model was based on the principles of the non-equilibrium thermodynamics. The experimental system made possible the quantitative estimation of plant—uptake and NOx-gas losses on a yearly scale. The mobilization/immobilization and nitrification/denitrification processes were described on a shorter-term scale (hours, days). The 20–80% of inorganic N-sources was taken up yearly by plants and NOx-gas losses were in the range of 10–25% of the source-N. The inorganic N-sources were totally depleted from the soil during the 3 years. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=5337 |
| Bálint, A., Heltai, G., Nótás, E., Tarr, Z., Jung, K. (2002): Modelling of environmental impact of different N-sources in soil/atmosphere system Microchem J. 73 (1-2), 113 - 124 10.1016/S0026-265X(02)00057-7 |
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