What is merchantable volume?
Notes -Merchantable volume is defined as the volume of the stem of a tree with the smallest piece being longer than 2.4 metres (8 feet) with a small end diameter of greater than 9 centimetres (3.5 inches).
What is STEM volume?
Stem volume is one of those variables that can not be measured directly in a forest inventory but that needs to be modeled and predicted from more easily measurable variables. Volume is either determined for the entire stem (total volume) or for defined stem sections (such as commercial volume).
How do you calculate taper volume?
The formula for the volume of a tapered hopper is based on the volume of a geometric pyramid or cone. The volume for a pyramid with any base is found by multiplying the area of the base by the height and dividing by 3.
How is merchantable volume calculated?
Merchantable tree volume is total tree volume minus the volume of the stump and top.
What is the normal forest?
“A normal forest is a forest which has reached and maintains a practically attainable degree of perfection in all its parts for the full and continued satisfaction of the objects of mgt.” A normal forest is a yardstick (means standard of comparison) for our actual forest and tells us shortcomings of our forest.
What is the main function of the taper?
Taper functions estimate how the diameter of the stem (over or under bark) changes along the length of the stem.
What is form factor in forestry?
In general terms, the form factor of a tree is the ratio of its volume to the volume of a specified geometric solid of similar basal diameter and height. Most commonly, the form factor of trees is based on a cylinder. Thus, the product of tree basal area, tree height and cylindrical form factor should give tree volume.
What is taper equation?
Taper equations are used to predict the diameter of a tree stem at any height of interest. The typical taper equation formulations used today are a splined set of two or three polynomials that are usually quadratic (2nd-order polynomial) or cubic (3rd-order polynomial) (Max and Burkhart 1976).
How do you find the volume of a tapered cylinder?
The formula for the volume of a conical cylinder is given as, V = πH/3 (R2 + Rr + r2) where “V”, “H”, “R” and “r” are volume, height, larger base radius, and smaller base radius of the conical cylinder.
How do I calculate volume per acre?
I. Basal area is the cross-sectional area of a tree trunk at breast height. Basal area is computed at the stand level as the sum of the basal area values for each individual tree, which is usually expressed as square feet per acre. number of trees and the size of the trees.
What is abnormal forest?
Abnormal Forest: Abnormal forest is one which is not normal, i.e. growing stock, age, class, distribution of stems, increment, etc. are either in excess or more usually in dificit than the normal forest. Classification of forestry.
What is forest growing stock volume?
The growing stock volume (GSV) of a forest, defined as the total volume of the stems of all living trees per unit area (m3/ha), is often used for forest resource management and planning (FAO, 2004) and as a predictor of carbon-related variables such as above-ground biomass (AGB) and carbon stocks (Somogyi et al., 2008) …