Tree structure

THE TREE

Tree is essentially a plant. Plants could also be classified, into the subsequent three categories:

(i) Herb; (ii) Shrub; and (iii) Tree.

(I) Herb is defined as plants whose stem is typically green and tender and height is usually less than 1 m. According to the span of life, it is called annual, biennial, and perennial.

(ii) Shrub is defined as

'a woody perennial plant differing from a perennial herb in its persistent and woody stem and fewer definitely from a tree in its low stature and its habit of branching from the base'.

A shrub is-usually less than 6 metres tall . Both these categories of plants supply, if at all, economic minor forest products only. As they are very small in size, they do not produce timber but shrubs are used as firewood.

(iii) Tree is defined as

'a large woody perennial plant having a single well defined stem (bole or trunk) and more or less definite crown.'

A tree is typically quite 6 metres tall which may , consistent with species, be upto 127 metres. For example, height of a Pseudosuga taxifolia tree in British Columbia has been measured to be 127. 1 m and that of a Sequoia sempervirens tree in California has been found to be more than 100 m tall. In India, the utmost height thus far recorded isn't more than 75m. A scrutiny of the record of heights of trees reveals that the conifers 1 are taller than the broad-leaved trees. For example, while the utmost height of deodar has thus far been recorded to be 73.2m, just in case of se of teak and sal are found to be only 58.5m and 51.2m respectively. From the purpose of view of girth also, the Sequoia of California and therefore the Eucalyptus of Australia are the most important because they need attained girths of 3574 cm and- 2438 cm respectively. In India the utmost girth thus far recorded is 1646 cm of a deodar in Kullu (Himachal Pradesh).

The. maximum-girths Of teak and sal are even less; these have been recorded to be 625, cm and 782 cm respectively.

The tree can be divided into three parts

Above the ground -

1. the crown,
2. the stem

Below the ground -

3. The root