Biogeoclimactic zones of British Columbia. Here's my region (in yellow) which has the designation CDF (Coastal Douglas Fir).
More info and a small slide show (click on the yellow CDF zone). Check out some of the other zones too and see how diverse British Columbia really is.
http://selkirk.ca/RR/bec/zones/gallery.html#
Has there been a similar study in the UK or in any of the other areas that our posters are from?
Cheers, Barrie.