Forests can be divided into six categories such as Moist Tropical, Montane Sub Tropical, Dry Tropical, Montane Temparate Forests, Sub Alpine and Alpine. Wet Evergreen, Semi-Evergreen, Moist Deciduous and Littoral and Swamp are the types of Moist Tropical Forests. Broad Leaved, Pine and Dry evergreen are the types of Montane Sub Tropical Forests. Dry Deciduous, Thorn and Dry Evergreen are the types of Dry Tropical forests. Wet, Moist and Dry are the types of Montane Tropical Forests. Moist and Dry are the types of Alpine Forests.
The chief economic product of forests is timber. Forests play a crucial role in preserving adequate water supplies. Forests are important for preserving adequate water supplies. They also provide irreplaceable supplies of oxygen and soil nutrients.