madscientist
RPC Supergenius
Also, in most OCCs the forests will all be cleared for production (Wonders) well before you get to the National Park. .
Actually this is generally not the case. Wonders are fairly easy to get in OCC as you are building fewer settlers/workers and your military can be reduced to the minimum. You do not need to chop to get them.
Forrests should be preserved for the health benefits and production. Later in the game you can decide whether to lumbermill/railroad them or go forrest preserves/national Park.