Page 1 - Lesson Notes_CL-9-Geo_CH-5-SUB-TOPIC-3

SAI INTERNATIONAL SCHOOL
(VIRTUAL CLASSES) – LESSON NOTES

Class - IX Geography
Chapter - 5 Natural Vegetation and Wildlife

(VIRTUAL CLASSES) - MODULE-2.4
TYPES OF VEGETATION

Tropical Evergreen Forests

 These forests are restricted to heavy rainfall areas of the Western Ghats and the island groups

of Lakshadweep, Andaman and Nicobar, upper parts of Assam and Tamil Nadu coast.

 They are at their best in areas having more than 200 cm of rainfall with a short dry season.
 The trees reach great heights up to 60 metres or even above.

 The region is warm and wet throughout the year, it has a luxuriant vegetation of all kinds —
trees, shrubs and creepers giving it a multilayered structure.

 There is no definite time for trees to shed their leaves. As such, these forests appear green all
the year round.

 Some of the commercially important trees of this forest are ebony, mahogany, rosewood,

rubber and cinchona.

The common animals found in these forests are elephant, monkey, lemur and deer. One horned

rhinoceroses are found in the jungles of Assam and West Bengal. Besides these animals, plenty of
birds, bats, sloth, scorpions and snails are also found in these jungles.

Tropical Deciduous Forests

These are the most widespread forests of India. They are also called the monsoon forests and
spread over the region receiving rainfall between 200 cm and 70 cm.

Trees of this forest type shed their leaves for about six to eight weeks in dry summer.

On the basis of the availability of water, these forests are further divided into moist and dry
deciduous.

The former is found in areas receiving rainfall between 200 and 100 cm.
These forests exist, therefore, mostly in the eastern part of the country — northeastern

states, along the foothills of the Himalayas, Jharkhand, West Odisha and Chhattisgarh,
and on the eastern slopes of the Western Ghats.

Teak is the most dominant species of this forest.