This Act creates 2 major programs, the Save Illinois Topsoil Program and the Illinois Natural Resource Enhancement Program. It is the purpose of this Act that certain marginal agricultural land be kept or taken out of crop production or pasture to protect soil and water quality and to protect and support fish and wildlife habitat. It is State policy to encourage the retirement of marginal, highly erodible agricultural land, particularly land adjacent to public waters and drainage systems, from crop production and to reestablish a cover of perennial vegetation in order to conserve, protect and enhance important water and land resources.