Thanks for your comments!
Kadri, you're definitely right. There's the big tree in the right upper part of the image which is the one I used for this image:
http://forums.planetside.co.uk/index.php?topic=8182.0As I wrote I used a particle system to create the foliage. Shame on me - I used instanced texture mapped simple planes. It would have been better to use a little bit bent planes to make it look more natural. Next time!
For the lying tree in the foreground I used parts of the same model (only of the trunk and some branches) and let ivy generator do some magic. The ivy leaves are a bit flat too, but I'm not sure I could change this?!
Btw I also used ivy generator to create these hanging things (?). I grew some ivy around a displaced cylinder, deleted the cylinder and the leaves afterwards and had some nice ...err... hanging things. I again used a particle system to place them onto the tree the correct way.
Here's my compliment to the makers of TG:When I created this model it took ages in Max even to change some simple settings. I'm not talking about rendering.
Exporting as an obj-file took also some time. I had to adjust all the textures after importing it into TG, but once it was loaded and saved as tgo-file even creating a population with this very dense model was a piece of cake for TG.
Fantastic!!
Dear planetside staff, now that this is really easy, you can focus on object
placement in TG

(if there would at least be a "sit on terrain" function for single objects, you could make the pain in my butt go away!!)