Natural Vegetation7 By Manish Kumar
Tropical Thorn Forests Climatic Conditions Annual rainfall less than 75 cm . Humidity is less than 50 per cent. . Mean temperature is 25 -30 C. Characteristics Height of trees 6 to 10m, and widely scattered. Acacias and Euphorbia's are found.
Distribution . Rajasthan, south-western Punjab, western Haryana, Kachchh and neighbouring parts of Saurashtra Here they degenerate into desert type in the Thar desert. Such forests also grow in Western Ghats covering large areas of Maharashtra, Karnataka, Telangana, ndhra Pradesh and Tamil Nadu. The important species are Neem, babul, cacti etc
Montane Sub-Tropical Forests Sub-tropical Broad-leaved Hill Forests Climatic conditions Mean annual rainfall is 75 cm to 125 cm. Average annual temperature is 180-21 C. . Humidity is 80%
Distribution . Eastern Himalayas to the east of 88 E longitude at altitudes varying from 1000 to 2000 m Also found in Nilgiri and Palni hills at 1070-1525 metres above sea level The higher parts of the Western Ghats such as Mahabaleshwar, the summits of the Satpura and the Maikal Range, highlands of Bastar and Mt. Abu in the Aravali Range carry sub-types of these forests.
Characteristics . These are forests of evergreen species. Commonly found species are evergreen oaks, chestnuts, ash, beech, sals and pines. Climbers and epiphytes are common. These forests are not so distinct in the southern parts of the country It is also called stunted rain-forest.
Sub-tropical Moist Pine Forests Distribution Western Himalayas between 73 E and 88 E longitudes at elevations between 1000 to 2000 metres above sea level. Some hilly regions of Arunachal Pradesh, Manipur, Naga Hills and Khasi Hills Wood Chir is the most dominant tree which forms pure stands. Timber is also found . It provides valuable timber for furniture, boxes and buildings. It is also used for producing resin and turpentine.
Sub-tropical Dry Evergreen Forests Climatic Conditions Annual rainfall is 50-100 cm (15 to 25 cm in December-March) The summers are sufficiently hot and winters are very cold. Distribution . Found in the Bhabar, the Shiwaliks and the western Himalayas up to about 1000 metres above sea level.
Characteristics . Low scrub forest with small evergreen stunted trees and shrubs . Olive, acacia modesta and pistacia are the most predominant species.
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