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Girard form class is a form quotient calculated as the ratio of diameter inside bark at the top of the first 16 foot log to the diameter outside bark at breast height ().Its purpose is to estimate board-foot volume of whole trees from measurement of DBH, estimation of the number of logs, and estimation of the taper of the first log, based on the general relationships identified between the ...
Tree height is the vertical distance between the base of the tree and the highest sprig at the top of the tree. The base of the tree is measured for both height and girth as being the elevation at which the pith of the tree intersects the ground surface beneath, or "where the acorn sprouted."
Leaf area index (LAI) is a dimensionless quantity that characterizes plant canopies.It is defined as the one-sided green leaf area per unit ground surface area (LAI = leaf area / ground area, m 2 / m 2) in broadleaf canopies. [1]
Forest inventory is the systematic collection of data and forest information for assessment or analysis. An estimate of the value and possible uses of timber is an important part of the broader information required to sustain ecosystems. [1]
To calculate trunk volume, the tree is subdivided into a series of segments with the successive diameters being the bottom and top of each segment and segment length being equal to the difference in height between the lower and upper diameters, or if the trunk is not vertical, the segment length can be calculated using the limb length formula ...
What is a good debt-service coverage ratio? Most lenders want to see a debt-service coverage ratio of at least 1.25. But, lender requirements will vary depending on the type of business loan and ...
Each tree’s measurements are used to calculate the area projected by the crown onto the ground. Summing the crown areas for all trees measured on a fixed plot area and dividing by the ground area will give the crown closure. The "moosehorn" crown closure estimator is a device for measuring crown closure from the ground. [4]
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