New tag for light forests

[Map_HeRo (Mikke)]

@seichter

I’m very reluctant for introducing new first level tags, I rather prefer adding information by second level tags.

Agreed, as mentioned before, and I also like the idea of “scattered_trees=yes” for this issue.

natural=wood / natural=grassland / natural=scrub as well as landuse=meadow could all go together with scattered_trees=yes to come as close as possible to the real OTG situation. A simple and pragmatical solution imho.

@seichter

There is of course a considerable ambiguity between scattered trees and closed canopy, but that is unavoidable when trying to bring the real world into a classifying scheme and is more or less common to all tagging.