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Site index is a term used in forestry to describe the potential for forest trees to grow at a particular location or "site". Site is defined as "The average age of dominate and/or codominate trees of an even-aged, undisturbed site of intolerant trees at a base age"; [1] furthermore, the word site is used in forestry to refer to a distinct area where trees are found. [2]
Site trees are chosen by what species is being grown in a particular forest. Different trees on the same site will produce different measurements of a site index. For example, a yellow-poplar (Liriodendron tulipifera) [2] growing on the same site as a white oak (Quercus alba) [3] will grow at a different rate over the same amount of time ...
In the United States, the forest cover by state and territory is estimated from tree-attributes using the basic statistics reported by the Forest Inventory and Analysis (FIA) program of the Forest Service. [2] Tree volumes and weights are not directly measured in the field, but computed from other variables that can be measured. [3] [4]
Florida's state forests are state forests overseen by the Florida Forest Service. There are 38 state forests in Florida covering more than 1,058,000 acres. [1] The first state forest in Florida was Pine Log State Forest, established on 6,960 acres in 1936. Cary State Forest was established in 1937. [2]
Stand density index (SDI; also known as Reineke's Stand Density Index [1] after its founder) is a measure of the stocking of a stand of trees based on the number of trees per unit area and diameter at breast height (DBH) of the tree of average basal area, also known as the quadratic mean diameter. It may also be defined as the degree of ...
[1] [2] When taking forest inventory the following are important things to measure and note: species, diameter at breast height (DBH), height, site quality, age, and defects. From the data collected one can calculate the number of trees per acre, the basal area, the volume of trees in an area, and the value of the timber. Inventories can be ...
When stocking, a tree's basal area is measured. The basal area is a cross-sectional area of the stump taken about 4.5 feet (1.4 m) above the ground. [7] The equation for calculating the basal area of trees in a stand is Basal Area = 0.005454 DBH 2, where DBH is the diameter of the tree at the aforementioned measuring height. [7]
Florida National Forest was established by the U.S. Forest Service in Florida on July 1, 1911, with 674,970 acres (2,731.5 km 2) by combining Ocala National Forest and Choctawhatchee National Forest. On October 17, 1927, the Ocala Division was separated to re-form Ocala National Forest.