Revegetation research on oil shale lands in the Piceance Basin
The overall objective of this project is to study the effects of various reclamation practices on above- and belowground ecosystem development associated with disturbed oil shale lands in northwestern Colorado. Plant growth media that are being used in field test plots include retorted shale, soil over retorted shale, subsoil materials, and surface disturbed topsoils. This project was initiated in June 1975 and is presently reporting on fifth-year data. Satisfactory stands of vegetation failed to establish on unleached retorted shale during two successive years of seeding (1977 and 1979). Only ...