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Single Row of Eucalypts
"Tuarts"
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Eucalpyt Photograph and research
results provided by Dr Rod Bird of the Department of Natural
Resources and Environment, Hamilton Victoria.
This unfenced single row of eucalypts shows how the wind speed
can actually increase as it is forced through the gaps under
the canopy. If stock is forced up against the fence they could
find themselves in the most dangerous part of the paddock.
On sandy soils the increased wind speed can lead to severe
soil erosion around the base of the trees.
Planting understorey trees to fill the gap is made more difficult
by the strong winds and competition from the large trees.
Despite this the results show how the shelterbelt reduces
winds speed by as much as 40% out in the paddock, with the
lowest speeds being recorded at about 75m from the trees.
Wind speeds do not return to normal until around 300m from
the belt.
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