Forest Volume Study Methods
ES classes with support of the Teslin Forestry offices conducted a variety of studies in the area of the Demonstration Forest. Classes were given lessons in prismatic volume sampling and results of this method was contrasted with 100 m by 10 m transects in which all trees were counted. We set out three transects and counted all trees by diameter and height to find volume then conducted prismatic samples at five site along the same 100 m transects.
We found the variability between the prismatic samples to be as great as 40% while the larger scale transect sampling yieled results that fell withing 20% of each other. The transect plots took far longer by appeared to yield more reliable results.
ES classes with support of the Teslin Forestry offices conducted a variety of studies in the area of the Demonstration Forest. Classes were given lessons in prismatic volume sampling and results of this method was contrasted with 100 m by 10 m transects in which all trees were counted. We set out three transects and counted all trees by diameter and height to find volume then conducted prismatic samples at five site along the same 100 m transects.
We found the variability between the prismatic samples to be as great as 40% while the larger scale transect sampling yieled results that fell withing 20% of each other. The transect plots took far longer by appeared to yield more reliable results.