Research by others will be encouraged in recreation areas for the increase and dissemination of knowledge. The Service will work with others within the regional air shed to reduce air pollution from sources within the area and elsewhere in the air shed. Fumes and smoke from campfires, refuse burning, and other kinds of combustion will be controlled in public-use areas to the extent necessary to maintain clean air. Because of the wide variety of resource uses acceptable in recreation areas, active resource manipulation, such as management of habitat for fish and wildlife, agricultural uses, forest management, and maintenance of meadowlands, is required to achieve desired results. In these cases, however, effective management requires the application of sound ecological principles to permit the achievement and maintenance of the desired conditions.
Many recreation areas contain significant scenic or scientific resources.
Management of scenic areas will be governed accordingly. If significant scenic features are the result of natural conditions, they will be managed to retain these conditions, at the same time making appropriate recreational, interpretive, educational, and research use of them. If other than natural conditions are involved, management may perpetuate these cultural conditions involved. Where significant cultural resources are present in a recreation area and are worthy of preservation of their historical value, they shall be protected and presented for public understanding, appreciation, and enjoyment to the extent compatible with the primary purpose of the area. In such cases, the management and use of the cultural resources will be patterned after the management and use of similar resources in historical areas.