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Prospect Hill Forest Monitoring

Prospect Hill Forest Monitoring

Tree growth data     (Excel spreadsheet).
Species and dbh (diameter at breast height - 1.37 m) from the 3 forest inventory plots on Prospect Hill.

Estimating the whole tree biomass (weight; including branches, leaves, bark) based on parameters that are easily measured in the field (dbh) is becoming a fundamental task in forestry. Regression equation are used to estimate tree biomass. These equation are typically developed in the following way: samples of major tree species are chosen for study, selected dimensions of each tree are recorded, the tree is felled and weighted either a whole or in pieces, and subsamples are oven-dried and weighted again to determine tree moisture content. Then tree wet (green) weights are converted to dry weights by using moisture content values. Because biomass is related to tree dimension, regression analysis is used to estimate the actual tree biomass from dbh measurements.
Example:       wt=1.3499 dbh*2.45
wt = weight (kg), dbh (in) for Hemlock (Tsuga canadensis).



Center for the Environment
Talcott Greenhouse South
50 College Street
Mount Holyoke College
South Hadley, MA 01075
Phone: 413-538-3091

Copyright © 2006 Mount Holyoke College. This page created and maintained by Center for the Environment. Last modified on April 16, 2006.