World generation and trees

[MisterSpock]

Actually im search for a map with less trees to start with. I want to have lots of bitters at the beginning of the game. Otherwise its boring.
(Trees are OP.)

So someone having a mostly treeless mapstring? Or maybe someone knows how to manupilate the terrain generator to spawn less trees...
Plz

PS: Sadly there is no biome size config when generating maps. Now deserts look like this:
https://steamuserimages-a.akamaihd.net/ ... 7CE8CDACE/
Im desperate.