This is exactly what I am doing this for, to quote myself:
Otherwise I would just add trees with the different kind, add a custom reaction to the elves, so they have iron and steel grade (these two are really only for the treehuggers, they are way too weak with normal wooden gear)
The reactions are already added btw, the have iron and steel now. In woodform.
Also in metalform for trading.
I am just making a "timberyard" (working title) that allows dwarves to refine wood. not many ideas though.
Wooden logs +wax = 1 fairwood log (worth more)
Wooden logs = 2 scrapwood logs (worth less)
No idea about hardwood, ironbark and steeloak yet. How would a dwarf do something like that ? No enchanting and druids... no. But I do not want to use metals, since this should be an alternative. Any ideas ?
Wow, wikipedia says that Ironwood exists. :
http://en.wikipedia.org/wiki/Olea_laurifoliaAlso a seperation of Heartwood, Sapwood and bark could be done. The trees would (realisticly speaking) seperated into softwood and hardwood categories.
BarK:
Products used by people that are derived from bark include: spices and other flavorings, tanbark for tannin, resin, latex, medicines, poisons, various hallucinatory chemicals and cork. Bark has been used to make cloths, canoes, ropes and used as a surface for paintings and map making.[2] A number of plants are also grown for their attractive or interesting bark colorations and surface textures or their bark is used as landscape mulch.[3][4]
Mh... just collecting thoughts, nothing solid yet.
More random stuff:
The bark of some trees is edible; in Sweden and Finland, pine bread is made from rye to which the toasted and ground innermost layer of pine bark is added, the Sami people of far northern Europe used large sheets of Pinus sylvestris bark that were removed in the spring, prepared and stored for use as a staple food resource and the inner bark was eaten fresh, dried or roasted.[14]
Bark contains strong fibres known as bast, and there is a long tradition in northern Europe of using bark from coppiced young branches of the small-leaved lime (Tilia cordata) to produce cordage and rope, used for example in the rigging of Viking age longships.[15]