The ATFS is primarily known for continuous wood and timber production but it also consists of many programs and committees that work to ensure the protection of wildlife habitats, watersheds, soil quality and recreation for communities. The habitat and resources that tree farms provided differ greatly based on their location and by the species of trees that are planted. Farms in the system attempt to maintain a healthy level of biodiversity by creating natural forest buffers, practicing sustainable harvesting techniques and by minimizing land fragmentation. Tree farm systems in each state are self-governing and all work under specific guidelines developed by the ATFS's National Operating Committee. The term tree farming was introduced in 1940 by linking the terms in an attempt to make it easier for the public to conceptualize that trees are renewable resources. Forest Landowners Association (FLA) 60% of the nation's forestlands are privately owned. In order to sustain private forests FLA works to sustain the people who own them. The association works on the behalf of all private landowners interests regardless of whether they are members or not. Since 1941, FLA has provided its members, who own and operate more than 40 million acres of forestland in 48 states, with education, information, and national grassroots advocacy, which enables them to sustain their forestlands across generations and help protect the rights of America's private forest landowners - along with the diverse habitats, clean water and air, recreation and the other, benefits that private forests provide. Outreach on behalf of private forest landowners nationwide enhances landowners forestland management practices and stewardship. Viable markets and reasonable regulations are fundamental to sustaining private forests, forestry related jobs and forest stewardship. FLA communicates advice, support and information to policy makers on behalf of all private landowners, on how proposed legislation could affect private forest management, stewardship and owners’ rights. FLA provides a voice for forest landowners on national and regional issues, and follows legislation appearing before Congress that affects forest landowners and their property. Members of the Forest Landowners Association are a diverse group of individual & institutional landowners, consulting foresters, and corporations. Motives for their support are varied but FLA is an advocate of all private landowners-regardless of size, corporate structure, location, certification status, or tax classification. Forest Landowners Association works with many organizations. Wetland Reserve Program (WRP) The Wetland Reserve Program (WRP) funds landowners that volunteer their land for wetland