Well, the "Night Elf" magic harvesting is not something I'd like to see outside a video game. As a way to diversify resource management, it's cool, but otherwise, it's cheeeeesy.
IMC, there are three elven cultures (which may be categorized as barbaric, civilized, and decadent, or neutral, good, and evil), the wood elves, grey elves and high elves.
Wood elves simply have no metal, except what they may get with their limited trade, or by "looting intruders" (robbing bypassers).
Grey elves spends much of their time on the seas. They now import the wood they need to buy ships, because they don't want to cut down down the few trees they have left.
High elves, the evil bastards of the lot (one must be pretty pretentious to call oneself "high" something, I mean, unless they live atop mountains), trade with dwarves and steal from other surface dwellers.