Development and validation of a simple approach to modelling tree shading in agroforestry systems
There have been a number of models developed which attempt to predict the shading patterns beneath individual tree or forest canopies. We describe a computer-based model which is able to estimate shading patterns through a discontinuous canopy of pruned trees. The model is designed to assist in the layout and management of agroforestry systems with widely spaced trees. The model was tested against data collected from a seven-year-old agroforestry system involving radiata pine, located near Canberra, Australia. The model was shown to slightly but consistently underestimate light penetration at ground level beneath the trees. However, the extent of bias (0.7% to 5%) was so small as to be of little significance in practice.
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| Main Authors: | , |
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| Format: | biblioteca |
| Language: | eng |
| Published: |
Amsterdam (Países Bajos): Springer,
1992
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| Subjects: | RADIACION SOLAR, PLANTAS DE SOMBRA, BIOMETRIA, EVALUACIÓN, PINUS RADIATA, CUBIERTA DE COPAS, MODELOS DE SIMULACIÓN, AUSTRALIA, |
| Online Access: | https://doi.org/10.1007/BF00053142 |
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| Summary: | There have been a number of models developed which attempt to predict the shading patterns beneath individual tree or forest canopies. We describe a computer-based model which is able to estimate shading patterns through a discontinuous canopy of pruned trees. The model is designed to assist in the layout and management of agroforestry systems with widely spaced trees. The model was tested against data collected from a seven-year-old agroforestry system involving radiata pine, located near Canberra, Australia. The model was shown to slightly but consistently underestimate light penetration at ground level beneath the trees. However, the extent of bias (0.7% to 5%) was so small as to be of little significance in practice. |
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