As used in this chapter, unless the context otherwise requires:

1.  ’Open-space land’ means land that is undeveloped natural landscape, including, but not limited to, ridges, stream corridors, natural shoreline, scenic areas, viewsheds, agricultural or other land devoted exclusively to open-space use and easements devoted to open-space use that are owned, controlled or leased by public or nonprofit agencies.

2.  ’Open-space plan’ means the plan adopted by the board of county commissioners of a county to provide for the acquisition, development and use of open-space land.

3.  ’Open-space use’ includes:

(a) The preservation of land to conserve and enhance natural or scenic resources;

(b) The protection of streams and stream environment zones, watersheds, viewsheds, natural vegetation and wildlife habitat areas;

(c) The maintenance of natural and artificially created features that control floods, other than dams;

(d) The preservation of natural resources and sites that are designated as historic by the Office of Historic Preservation of the State Department of Conservation and Natural Resources; and

(e) The development of recreational sites.