Excerpt from The Timber Resources of Vermont

A resurvey of the timber resources in Vermont was made in 1965 and 1966 by the Northeastern Forest Experiment Station, approximately 18 years after the initial forest survey.

In this resurvey, as in the initial survey, the Northeastern Station received cooperation from the Vermont Department of Forests and Parks. The Department purchased the aerial photographs of the entire state that were used for the re survey and gathered information on the output of timber products. State field crews remeasured initial forest survey plots and established new plots on all State forest land.

Personnel of the Green Mountain National Forest car ried out the part of the survey on National forest land.

This report summarizes the timber-resource situation and the changes that have taken place since the initial sur vey. Trends in the supply of timber for forest-based indus tries are pointed out and projections of future timber supply are made.

In this resurvey, a portion of the initial ground plots was remeasured to provide estimates of net annual timber growth and estimates of land-use change and to update the initial forest inventory volume. New ground plots were established for an independent second estimate. These two sets of estimates were weighted and combined to give the current estimates of forest area and timber volume.

Sampling errors, which indicate reliability, are shown for most of the totals of the breakdowns of the new esti mates. Users of these resource data are cautioned to read carefully the definitions of terms and the section pertain ing to the reliability of the estimates in the appendix.

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