[Imp]

What map location are you talking about ? Played a few African battles recemtly & seem to remember trees were at level zero if they were present. Golan Heights on standard setting produced bigger clumps of trees spread about evenly on hills & level zero.
Find a Bat Loc you like & fiddle. some maps summer, savanha settings dont seem to make much diffrence others they do, Golan for instance gets very muddy in some seasons.