Fig. 5
From: Variable retention harvesting in the Douglas-fir region
The US Bureau of Land Management is making extensive use of innovative retention harvesting treatments in the management of ~ 1 million hectares of the forest in western Oregon; illustrated here is an aerial view of retention in a 50-year-old plantation. Note the lack of any kinds of legacies in the adjacent private forestlands (upper right of picture) that are managed for maximizing return-on-capital. All regeneration harvesting conducted by BLM on these lands is by variable-retention prescriptions