I love to fly in Switzerland and especially in the Alps. One thing that bothers me, however, is trees in high alpine glacier country. The picture shows a shot in the Bernese Oberland. These trees are at 11300 feet, which corresponds to 3444 metres. It even has a deciduous tree or bush.
The second picture shows the altitude levels of the Alps. You can see that for deciduous trees it ends at about 1500 metres.
Southern side of the Alps: there is mostly deciduous forest (chestnut trees). In Aerofly FS4, however, there is a lot of mixed forest and far too many conifers. They only appear at the very top (1500-1800m).
Or take a look at a picture of the Ghiridone (2186m) in Ticino. There are lots of trees on the summit in Aerofly FS4. In reality, it's a barren rocky peak.
In the Engadine and parts of the Valais, the tree line is sometimes much higher, up to 2500 metres. But these are conifers (larches, Swiss stone pines).
Here is a link that might help. It has GIS files on the subject. https://www.agroscope.admin.ch/agroscope/de/h…en-schweiz.html
Important for me would be: - no more vegetation at 3000m
- mainly deciduous trees in Ticino, conifers only at altitude
