Wood is a hard, fibrous structural tissue found in the stems and roots of trees and other woody plants. It has been used for hundreds of thousands of years for construction material.wood based gives fabulous look and it is used from early days.
Trees are divided into two classes: hardwoods and softwoods. The hardwoods such as Teak, birch, maple have broad leaves. The terms "hardwoods" and "softwoods" are not directly associated with the hardness or softness of the wood although in most cases hardwoods are actually harder and tougher than softwoods. In general softwoods originate from cone-bearing trees and hardwoods from trees that have their seeds contained in a seed-case.
Sapwood
Sapwood plays and important part in a tree's living process. In general only the last few outside layers of sapwood are alive. The rest of the sapwood carries moisture from the roots to the leaves and store food for the tree. It usually have a higher moisture content than the heartwood.
Heartwood
During the life of the tree, sapwood gradually changes into heartwood. As it does so, it becomes less permeable. Since moisture movement is retarded considerably, heartwood dries more slowly than sapwood. Heartwood usually surface checks and honeycombs more readily than sapwood, hence requires milder drying conditions. It is usually darker in color and also more resistant to decay than sapwood.
A : Cambium layer inside of inner bark
B : Inner bark
C : Outer bark
D : Sapwood
E : Heartwood
F : Pitch
G : Wood rays
There are over 150 species of timber which are produced in India.There are about 46 main timber companies and more than 1000 small timber companies in India.some common trees used for supplying timber are
- Babul
- Banyan
- Bamboo
- Deodar
- Elm
- Coconut
- Mahogany
- Mango
- Mulberry
- Palm
- Pine
- Cedar
- Rosewood
- Sal
- Sandalwood
- Teak etc.
for in detail list please check Wikipedia