Fine‐scale spatial modelling of pasture production and fertiliser responses under variable climate: Assessing a decision support tool in pasture management
| Autor: | M. H. Gray, Russ Williams Tillman, A. G. Gillingham, Baisen Zhang |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Decision support system
geography Geographic information system geography.geographical_feature_category Agroforestry business.industry Simulation modeling Decision tree Soil Science Climate change Plant Science Agricultural engineering Pasture Environmental science Animal Science and Zoology Environmental impact assessment Scale (map) business Agronomy and Crop Science |
| Zdroj: | New Zealand Journal of Agricultural Research. 52:455-470 |
| ISSN: | 1175-8775 0028-8233 |
| DOI: | 10.1080/00288230909510527 |
| Popis: | A decision support tool which integrated a geographic information system (GIS) with decision tree models to predict pasture production and pasture responses to phosphate (P) and nitrogen (N) fertiliser was assessed on two farms with contrasting climate inNew Zealand. Scenarios of rainfall variability and different fertiliser application strategies were also analysed in this assessment. The results indicated that the models performed well in generating reliable predictions of pasture production and fertiliser responses. The integration of the decision tree models with the GIS provides an efficient tool to assess feed availability and to optimise fertiliser application strategies over landscapes at fine (paddock) scale with considerations of climate variability and environmental impact. The limitations of this decision support tool and possible improvements are also discussed. |
| Databáze: | OpenAIRE |
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