Modelling spatial and inter-annual variations of nitrous oxide emissions from UK cropland and grasslands using DailyDayCent
| Autor: | Laura M. Cardenas, Arindam Datta, K. E. Smith, C. F. E. Topp, Steven G. Anthony, K.L. McGeough, Rachel E. Thorman, Pete Smith, Cathy J. Watson, David R. Chadwick, Robert M. Rees, Matthias Kuhnert, M. J. Bell, Joanna M. Cloy, J. S. Williams, Nuala Fitton, Astley Hastings |
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| Rok vydání: | 2017 |
| Předmět: |
010504 meteorology & atmospheric sciences
Soil texture Soil science Atmospheric sciences 01 natural sciences Monte Carlo simulations Nitrous oxide emissions chemistry.chemical_compound Soil properties Clay soil Management practices Normal range 0105 earth and related environmental sciences Ecology business.industry Spatial analysis 04 agricultural and veterinary sciences Nitrous oxide chemistry Agriculture Soil water 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science DailyDayCent Animal Science and Zoology Sensitivity analysis business Agronomy and Crop Science |
| Zdroj: | Agriculture, Ecosystems & Environment. 250:1-11 |
| ISSN: | 0167-8809 |
| DOI: | 10.1016/j.agee.2017.08.032 |
| Popis: | Agricultural soils are the primary source of nitrous oxide emissions due to management practices including fertiliser application. While fertiliser rates are one of the main drivers of nitrous oxide emissions, emissions are also dependent on other variables such as climate and soil properties. To understand the spatial and inter-annual variations in emission rate, simulations of N2O emissions were made from 2000 to 2010 for UK grass and croplands. In addition, the sensitivity of these emissions to soil and climate inputs was also tested. Emissions of between 0.3 to 3.5 kg N ha−1 yr−1 and 0.7–7 kg N ha−1 yr−1 were simulated across UK croplands and grasslands, respectively. While inter-annual variations can be attributed to climate influences, the primary driver of spatial variations in emissions was soil clay content. However, when the sensitivity of nitrous oxide emissions to soil clay content alone was tested, it was not always the best predictor of emissions, when soil texture is altered outside of the normal range used as inputs to the model from different databases. |
| Databáze: | OpenAIRE |
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