Classification Trees In the Forest

Classification tree in a forest is very useful for the purposes of forest management itself. Classification trees can be based on the size or position of the tree canopy of trees in the forest (Kadri et al, 1992).

1. Classification tree based Size

Parameter measure intended form of trunk diameter at breast height (130 cm above the ground) and the height of the tree. For each phase of growth, the size will always be different. Therefore, classification trees by size based on the size divided into phases as follows (Kadri et al, 1992; Directorate General of Forestry, 1990).

• Seedlings, which is a tree whose height is less than or equal to 1.5 meters. 
• Flakes or saplings (saplings), ie trees of more than 1.5 meters with a trunk diameter of less than 10 cm
• Poles is a tree with a trunk diameter of 10cm-19cm.
• Tree core (nucleus trees), which is a tree with a diameter of 20cm-40cm. Core tree is a tree of commercial species with a diameter of 20cm-49cm stems that will form the main stand and to be felled in the rotation next cutting.
• Large trees (trees), which is a tree with a trunk diameter of more than 50cm.  

2. Classification tree based on the position of the canopy
Given the position of the trees in the forest stand, the trees can be grouped into the following classes (Baker et al, 1979; Darjadi and Hardjono, 1976).

• The dominant tree
•   codominant trees
•  Intermediate trees
•  Supressed trees
•   dead trees

According Darjadi and Harjono (1976), the division or classification tree at the top in pure stands is indispensable for maintaining the interests of the forest, for example, is needed in planning or carrying out thinning activities.
Salamharjoshrian