. Biomass statistics for Vermont : 1983. Biomass energy Vermont Statistics; Forests and forestry Vermont. C1 FT) Figure 2.—Volume and weight relationships of hardwood aboveground tree biomass components. variable (Raile 1982). Then the volumes were converted to weight using species- specifc weight/volume ratios (Markwardt 1930). The weight of the merchantable stem was calculated by applying weight/volume ratios to estimates of volume. Timber volume was estimated from new equations for both sawtimber and growing stock (Scott 1979, 1981). The difference between above-stump biomass from the weigh
. Biomass statistics for Vermont : 1983. Biomass energy Vermont Statistics; Forests and forestry Vermont. C1 FT) Figure 2.—Volume and weight relationships of hardwood aboveground tree biomass components. variable (Raile 1982). Then the volumes were converted to weight using species- specifc weight/volume ratios (Markwardt 1930). The weight of the merchantable stem was calculated by applying weight/volume ratios to estimates of volume. Timber volume was estimated from new equations for both sawtimber and growing stock (Scott 1979, 1981). The difference between above-stump biomass from the weight regression equations and the independent estimate of merchantable stem biomass was the estimate for tops and branches. Estimates of area, volume, numbers of trees, and aboveground tree biomass have been summarized in this report. The statistics are presented by forest-type group, species or species group, and diameter group; tables are provided by state and county level. Reliability of Estimates The data in this report were based on a carefully designed sample of forest conditions throughout Vermont. However, because the field crews did not measure every tree nor examine every acre in the State, the data are estimates. Therefore, zeros in any table cell indicate that the condition did not appear in the sample, or that the amount encountered was negligible. They do not necessarily mean that the condition does not exist. There are two important sources of error to consider when looking at the estimates provided in this report: (1) the error associated with estimation from sample plots, and (2) the error associated with combining independent estimates. Some of the errors associated with estimation from sample plots are included in the tables and are called sampling error. We are not able 4. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfect
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