Well here's my anecdotal account. In Oct 1987 I was thinning by worker
selection a block around 30 acres corsican pine on flat sandy ground in
Norfolk for the Forestry Commission. Thinning intensity was intermediate
between low and crown. 30 year old crop, first thinning. We'd done around a
third by area when the hurricane came through and when I got back there a
few weeks later our own area remained largely upright but the unthinned
block was uniformly flattened. In my day to day work for Nottingham I rarely
specify crown thinning for individual trees, and never on the dubious
premise of admitting light.
Edmund Hopkins
Arboricultural Officer
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