One of the six "systems" established by the U.S. Forest Service to have a systematic, orderly way to view and evaluate its many diverse but interrelated activities. The role of this system is to protect, conserve, and enhance the basic resources of air, soil, and water on forest and rangeland. It provides the base on which the other resources grow. Activities on National Forest land include land-use planning, administration of special land uses, easements, and land adjustments, and management of mineral areas in addition to the protection, conservation, and enhancement role. The six "systems" are "Land and Water", Timber Resource, Outdoor Recreation and Wilderness, Rangeland Grazing, Wildlife and Fish Habitat, and Human Community Development.