Up a tree dating
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Record that measurement as the tree’s height to the closest foot.
Roots extending down from that point would not add to the height of the tree.
Additional details on the methodology of tree girth measurement, tree crown measurement, and tree volume measurement are presented in the links herein.
American Forests, for example, uses a formula to calculate Big Tree Points as part of their Big Tree Program that awards a tree 1 point for each foot of height, 1 point for each inch (2.54 cm) of girth, and ¼ point for each foot of crown spread.
Fourteen feet [4.3 m] of the tree were spoiled in falling.
The extreme length of the tree from the stump to the top twigs was 300 feet (91 m)] ---- Greenfield Gazette." In 1995 Robert Leverett and Will Blozan measured the Boogerman Pine, a white pine in Great Smokey Mountains National Park, at a height of 207 feet in 1995 using ground based cross triangulation methods.
If alone pick a distinctive point on the ground to mark this point.
The distance from the base of the tree to this point is equal to the height of the tree.The base of the stick should still be aligned with the base of the tree.4) If you have an assistant, have them walk away from the base of the tree at a right angle to your position until they reach the spot on the ground that aligns with the top of the stick.First try to view the tree from several different angles to see where the actual top of the tree is located. This will eliminate the greatest potential for error.The stick method requires a measuring tape and a stick or ruler and uses the principle of similar triangles to estimate tree heights.Tree height is one of the parameters commonly measured as part of various champion tree programs and documentation efforts.