Iowa Code § 455A.16
It is the policy of the state of Iowa to protect its natural resource heritage of air, soils, waters, and wildlife for the benefit of present and future citizens with the establishment of a resource enhancement program. The program shall be a long-term integrated effort to wisely use and protect Iowa's natural resources through the acquisition and management of public lands; the upgrading of public park and preserve facilities; environmental education, monitoring, and research; and other environmentally sound means. The resource enhancement program shall strongly encourage Iowans to develop a conservation ethic, and to make necessary changes in our activities to develop and preserve a rich and diverse natural environment.
Iowa Code § 455A.16
89 Acts, ch 236, §3