Trees Per Acre Calculator - Calculator Academy (2024)

FAQs

How to calculate how many trees per acre? ›

Forests typically have 100 to 200 trees per acre. One trillion trees would require five to 10 billion acres of land, two to four times the entire area of the United States. Where would all those trees be planted?

The overall shape of a tree trunk can be defined as a form factor: V = F · A · H, where A = area of the base at a designated height (such as 4.5 feet), H = full height of tree, and F = the form factor.

Divide the basal area factor (BAF) by the basal area of each tree (BAF / Tree BA). 3. Divide again by the number of plots to get the number of trees per acre represented by that tree, which is its expansion factor.

Multiply the length (feet) and width (feet) of land to get the area in square feet. Then, convert the area into acres by using the conversion factor of 43560. Divide the area by the conversion factor because 1 acre = 43,560 square feet.

A compromise initial spacing for timber and wildlife is between 500 and 600 seedlings per acre. Check with your forester or wildlife biologist for more information about species selection, planting densities and typical site preparation and care after planting to expect good results.

In a plantation, the number of trees per acre can be estimated given the spacing within a row of trees and the distance between the rows. Trees per acre is an appropriate term to describe stand density in young stands, whether a plantation or naturally regenerated stand.

Each cubic foot of wood weighs about 60 pounds (green weight), which translates into about 450 tons per acre green weight basis (100 trees/acre x 150 cubic feet per tree x 60 pounds per cubic foot divided by 2000 pounds per ton).

To estimate the number of trees per acre, trees are assumed to be roughly on a grid spacing lay-out. Trees per acre are determined by measuring distance between trees averaged for the site. The distance between tree rows and the distance between trees within a row are estimated.

Allometric equations for trees are usually in the form of power relationship Y = a X b or logarithmically transformed power equations as ln(Y) = ln(a) + bln(X).

What is the formula for tree valuation? ›

Cross-sectional area is determined by squaring the radius of the trunk at 4.5 feet, or diameter at breast height (dbh), and multiplying by 3.14. Then, multiply the cross-sectional area times the unit price to obtain the value.

The formula for calculating the trees per acre values within these tables is: Estimated Number of Trees per Acre = 43,560 / [( spacing between trees in feet for direction 1 ) X ( spacing between trees in feet for direction 2 )].

You could repeatedly measure the height, crown spread, and stem diameter of specific trees over time. You could also measure annual shoot elongation by measuring between bud scars on branch tips. You can get an average growth rate by taking the change in size and dividing it by the amount of time it has been growing.

Example calculation:

Using the seeding rate calculation equation {(Seed/ac factor) / (seed/pound) = pound/ac} it is determined that the proper seeding rate is 2.0 PLS pounds/ acre. (871,200 seed/acre) / (427,365 seed/pound) = 2.039 or 2.0 PLS #/ac.

To estimate the number of trees per acre, trees are assumed to be roughly on a grid spacing lay-out. Trees per acre are determined by measuring distance between trees averaged for the site. The distance between tree rows and the distance between trees within a row are estimated.

A 6x6 foot spacing is considered the standard for Christmas tree plantations. This translates into 1,210 seedlings per acre. Other commonly used spacings are 5x5 foot (1,742 trees/acre) and 5x6 foot (1,452 trees/acre).

Diameter at breast height, or DBH, is the standard for measuring trees. DBH refers to the tree diameter measured at 4.5 feet above the ground.