A tree responds to pollarding by building a
dense mass of woody fibres around the cutting
points. This bulky mass resists decay and
effectively divides the vigorous juvenile growth
from the aging stem (Harris et al., 1999). Hence, the
defensive and structural integrity of the tree is
maximized using this pruning system because
pruning cuts are made when biological reactivity of
the trees is quite high and living cells quickly react
to wounds and environmental changes and can
develop a strong defensive reaction (Coder, 1996).
Also, pollarded trees develop a constantly
rejuvenated, energy-creating young canopy, on top
of an increasingly ancient trunk. This slows the
tree’s normal aging processes.
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