Constancy and Cover of Plants in the Petersburg and Wrangell Districts, Tongass National Forest and Associated Private and Other Public Lands, Southeast Alaska.

摘要

The Forest Inventory and Analysis (FIA) Program of the USDA Forest Service, Pacific Northwest Research Station, has responsibility for measuring and evaluating resources in Alaska, California, Hawaii, Oregon, and Washington. The Alaska FIA unit has developed techniques that measure and characterize vegetation cover and distribution. Nonforest and marginal forest areas as well as heavily timbered vegetation types are sampled.