ads and highways and supporting facilities such as rock stockpiles, and BPR maintenance sheds, etc.NUBarren or nonforestable land due to utility corridors, etc.NRBarren land due to rock outcrops (non-commercial rocky).NONonvegetative land due to other cultural developments.DDouglas-firBDBigcone Douglas-firRRedwood old growthRYRedwood young growthGSGiant SequoiaWWhite pine (as a type group)PPondero