In 2010, the Sons of the American Revolution posted a helpful and well arranged online listing of "state-by-state cemetery preservation, related laws, and resources" that is a great starting point for finding links to cemetery preservation information pertaining to any individual state.
"Saving Graves - Cemetery Preservation Alliance" (see main link below) also offers state specific links for cemetery preservation resources and educational and volunteer information.
So check out Ohio's cemetery preservation resources. I personally hope that more will be added at the state level.
Also, although your cemetery of concern may be located in Ohio, please take a moment and check out cemetery preservation information offered on other states' websites because it is good to learn what other states are doing to improve their cemeteries.
(main link)Saving Graves
Ohio History Connection - Cemetery Preservation
Ohio Genealogical Society - Cemetery Research and Preservation Resources
State Association for the Preservation of Iowa Cemeteries
Kentucky Historical Society - Cemetery Preservation
Illinois Historic Preservation Agency
Indiana Historic Preservation & Archaeology from the Indiana Department of Natural Resources
Pennsylvania Historical and Museum Commission - Cemetery Preservation and Recordation
Texas Historical Commission - Cemetery Preservation
Georgia Historic Preservation Division - Georgia Department of Natural Resources - Cemeteries
Oregon Parks & Recreation Department - Oregon Historic Cemeteries Program
Michigan Historic Cemeteries Preservation Guide