OK David
You dangled the worm on the hook so....
Having read an early version of my paper "Reduction Via Thinning" you of all
people should know exactly why one might decide to apply this particular,
very restrained, sensitive and even "holistic" method of size control.
Further more, having read that document you should know exactly what
structural effects and possible benefits might accrue from the removal of
peripheral (one might say) "dynamic" mass.
Obviously the greatest (one might say) "static" mass is contained in the
tree's trunk and structural elements and equally obviously ANY pruning DOES
reduce weight. However the strategically significant point is the
relationship of the mass (weight) and mass displacement over the height of
the tree and the implications that any reduction of peripheral mass has on
the trees structural response to stimulus.
And to remind you as to "Why?", because a few hundred million years of
evolution has designed trees to facilitate such pruning as a way for the tree
to survive extreme climatic events in order to preserve the individual and
bestow a genetic advantage on that individual.
If such peripheral thinning is actualy facilitated by trees morphology, then
arborists recognising and simulating this peripheral "Reduction Via Thinning"
are only understanding fundamental morphological traits and using them to do
the very essence of sympathetic, enlightened tree pruning.
You could question when such pruning is applicable, then we can have a useful
discussion.
I usually argue against pruning of any kind beyond formative pruning and if
pruning (of any kind, but especially heavy pruning) is the only option then I
suggest they consider removal and replacement, but given that my clients live
cheek by jowl with their beloved trees, some of them, in full knowledge of
the alternatives and for whatever reasons that they can't be talked out of,
decide to manage the size of their trees. It is for these clients that "RVT"
was designed.
David Lloyd-Jones
PS. I would be hapy to send you an evaluation copy Bettina.
<:::><:::><:::><:::><:::><:::><:::><:::><:::>
CHESHIRE
ARBORICULTURE
9 Lowland Way, Knutsford
Cheshire, England, WA16 9AG.
phone/fax 01565 621234
www.craftwoods.co.uk
www.arbornauts.com
Incorporating Cheshire Tree Surgeons
================================
----- Original Message -----
From: David Evans
Hi Guys
I wont comment about the combination of crown reduction and thinning beyond
saying my usual why? Nonetheless, such tree work doesn't reduce weight does
it. It's always a term that I've found rather odd. Thinning or crown
reductions don't reduce a tree's weight significantly because by far the
greatest weight is contained in the main stem and principal limbs.
Cheers
Acer ventura
--
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info
The UKTC is supported by The Arbor Centre
http://www.arborcentre.co.uk/
