BLM manages 3 million acres of forested lands in Colorado. Most of this, 2.5 million acres, are woodland forests dominated by tree species that are not traditionally used in commercial markets. These are tree species such as pinyon-juniper and gambel oak. The remaining 0.5 million forested acres consist of tree species that are used commercially such as ponderosa pine, lodgepole pine and Douglas fir. Some of the wood products harvested include sawtimber, firewood, Christmas trees, post and poles, and biomass. Forest lands in Colorado have low productivity rates, and BLM manages lands to restore forest health conditions rather than produce commercial timber.