12 Facts About Tree measurement

Tree measurement height is the vertical distance between the base of the tree and the highest sprig at the top of the tree.

Larger trees can be climbed and a tape measurement made from the highest point of the climb to the base of the tree.

Since the measurement is along the hypotenuse of the right triangle and both the top and bottom triangles are independent, it doesn't matter if the tree top is offset from the base as this does not affect the calculation.

Tree girth measurement is commonly performed by wrapping a tape around the trunk at the correct height.

The most basic crown spread Tree measurement is the average length of two lines across the crown area.

The first Tree measurement is made along the longest axis of the crown from one edge to the opposite edge.

The climber then rappels down the tree measuring the trunk circumference by tape wrap at different heights with the height of each measurement referenced to the fixed tape running down the trunk.

Where this Tree measurement is not meaningful, an additional girth Tree measurement should be taken at a more appropriate position and that height noted.

An approach to their measurement would be to measure the area occupied by the many trunks, the area occupied by the crown of the tree, the height of the tree, and any other measurements the investigator deems appropriate.

American Forests National Big Tree measurement Program is the largest in the world with coordinators in all fifty states and the District of Columbia and is used as a model for several Big Tree measurement programs around the world.

The Native Tree Society has its own database Trees Database with the requirement that the trees entered meet their height measurement standards.

The Native Tree Society provides a free downloadable excel spreadsheet that can be used for organizing tree datasets Tree Measurement Data Spreadsheet.