Forest Inventory of a Northern Hardwood Forest: Watershed 6 1965, Hubbard Brook Experimental Forest

Forest inventory surveys were initiated in 1965, repeated in 1977, and repeated at 5 year intervals after that. This is the initial data set and was collected in summer of 1965. The inventory consists of a total inventory of all trees >= 1.5 cm diameter-at-breast-height (dbh) on the whole of the watershed (13.23 ha), as measured in each of the 208 25 m x 25 m plots.
Shrubs, seedlings and small saplings were also surveyed.