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Measuring Questions and rules
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Measuring Questions:
When measuring a tree you may encounter some unexpected challenges. This album looks at some challenges that may arise when measuring your tree.
Question
My tree is on an extremely steep slope. How can I measure its circumference?
Answer (see Figure 3)
When measuring the circumference of a tree on a slope, measurements are normally taken at the high and low side of the slope and then averaged. however, in some cases an especially steep slope may prevent the low side of the trunk from being measured. In this situation, the measurement should be taken at 4 ½ feet above the mid-point of the trunk.
Question
My tree has a canker or branch at 4 1/2 feet. Where is circumference measured?
Answer (see Figure 3)
If there is a growth or branch on the trunk at 4 1/2 ft, measure the smallest point below 4 1/2 ft. If the tree forks, record in inches the smallest circumference between 4½ feet and the ground below the lowest fork excluding dead branches and Epicormic sprouts.
Question
How do I determine if a tree is one tree or multiple trees?
Answer
In order to properly measure circumference, it must be determined whether the tree in question has a single trunk that can be measured or whether it represents two or more trees growing very close to one another. Trunks that have clear separation at or near the ground should be considered separate trees and measured accordingly. Also if the circumference measurement below the lowest fork places the measurement at the ground, it should be considered separate trees.
Question
Is circumference measured at 4 1/2 feet above the ground or 4½ feet along the trunk?
Answer (see Figure 4)
Measure 4½ feet from where the tree enters the ground along the axis of the tree.
Question
What is an epicormic sprout?
Answer
Epicormic shoots are sprouts that emerge from dormant buds along the trunk or branch of a tree. They are also called water sprouts. They often form in response to the sudden exposure to light in a forest setting but in the urban area they are more often associated with stress to the tree.
If the tree forks, record in inches the smallest circumference between 4½ feet and the ground below the lowest fork excluding dead branches and epicormic sprouts.
4 files, last one added on Sep 29, 2007
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