From the SAF website:

The mission of the Society of American Foresters is to advance sustainable management of forest resources through science, education, and technology; to enhance the competency of its members; to establish professional excellence; and to use our knowledge, skills, and conservation ethic to ensure the continued health, integrity, and use of forests to benefit society in perpetuity.

I am a member of this organization for the purpose of contributing to their mission and to stay updated on current trends and information in the forestry industry.