Modelling ammonia losses after field application of biogas slurry in energy crop rotations

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

Over the past few years the number of biogas slurries, which are generally used as nitrogen fertilisers, have seen a steady increase in Germany. A mechanistic ammonia volatilisation model was developed to predict the ammonia losses of these slurries when applied to bare soil, maize, wheat and rye grass canopies. Data for model development were collected from several field measurements carried out at two locations in Northern Germany between the years of 2007 and 2008. Additionally, the behaviour of the slurries on and in the soil was investigated through the use of infiltration pot experiments. The model includes three main compartments: slurry, atmosphere and soil. The soil compartment model is relatively simple, as the slurry infiltration, nitrification and ploughing dislocation into the soil determined in the experiments showed quantitatively no significant differences between the tested slurries (mono-fermented, co-fermented and pig slurry) and soils (sand soil and loamy sand). Hence, instead of a complex soil model, stable reduction factors, as derived from the experiments, were implemented in the model. Simulated ammonia emissions were statistically compared (root mean square error (RMSE), modelling efficiency (ME), linear regression) to the observed emissions. All evaluations showed an acceptable model performance (RMSE=1.80 kg N ha -1), although there were a few number of anomalies which could not be modelled in an adequate way. A model sensitivity analysis showed that temperature and slurry pH value are the main drivers of NH 3 volatilization in the model. Following a change of +1°C or of +0.1 pH unit ammonia volatilization will increase by about 1% and 1.6% of the applied total ammoniacal nitrogen, respectively. We were able to show that a simple model approach could explain most factors of ammonia volatilization in biogas crop rotations.

OriginalspracheEnglisch
ZeitschriftWater, Air, and Soil Pollution
Jahrgang223
Ausgabenummer1
Seiten (von - bis)29-47
Anzahl der Seiten19
ISSN0049-6979
DOIs
PublikationsstatusErschienen - 01.01.2012

DOI

Zuletzt angesehen

Publikationen

  1. Verzug beim Napf-Rückwärts-Fließpressen
  2. Creating Social Existence Through Law. Laypeople’s Successful Struggle for a Certificate of Miscarriage
  3. Nutzungskonflikte zwischen Freizeitnutzern
  4. The influence of visual texture on perceiving the location of auditory events
  5. Hold Back The River
  6. Unraveling the Relationships between Ecosystems and Human Wellbeing in Spain
  7. Wasser und nachhaltige Chemie
  8. Volunteering in retirement motivation and design of use of Senior Expert Services
  9. Koordination verbessern
  10. Oehring, Richard
  11. All production is joint production - A thermodynamic analysis
  12. Geschlechtsspezifische Perspektiven auf das Unternehmertum
  13. § 40 Wasserkraft
  14. Mitarbeitergespräch
  15. Law relating to Remote Sensing - Earth Observation
  16. Freedom Rising
  17. Removal of dexamethasone from aqueous solution and hospital wastewater by electrocoagulation
  18. Luthers Arbeit an christologischen Metaphern
  19. Bahr, Daniel
  20. Local perceptions as a guide for the sustainable management of natural resources
  21. Inheriting Cosmopolitics
  22. Exploring Student Perceptions of the Hidden Curriculum in Responsible Management Education
  23. German forest management stakeholders at the science-society interface
  24. Do We Need to Use an Accountant? The Sales Growth and Survival Benefits to Family SMEs
  25. Optische Flussfeldparameter bei der Annäherung an Objekte
  26. Living at night in times of pandemic
  27. Landscape simplification filters species traits and drives biotic homogenization
  28. Regulation and social perception of genetic data banking
  29. Gender Representation in Selected EFL Textbooks
  30. On Limits of Freedom of Public Authorities with Respect to Obtaining Evidence at the Stage of Investigation under Turkish Criminal Procedure and Evidence Law
  31. Globalisierung
  32. Universalien, religionsphilosophisch
  33. Handwerksreform 2004
  34. Strategiegetriebene, adaptive Budgetierung
  35. "We're not like that!"
  36. Green Big Data – eine Green IT/Green IS Perspektive auf Big Data