The Thorn Forests And Scrubs
Forests Our Lifeline of Class 7
- These types of forests are found in the regions which receives less than 70 cm of rainfall.
- The natural vegetation consists of thorny trees and bushes.
- This type of vegetation is found in the north-western part of the country including semi-arid areas of Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh.
- Acacias, palms, euphorbias and cacti are the main plant species.
- Trees are scattered and have long roots penetrating deep into the soil in order to get moisture.
- The stems are succulent and thick to conserve water.
- Leaves are mostly thick and small to minimize evaporation.
- In these forests, the common animals are rats, mice, rabbits, fox, wolf, tiger, lion, wild as, horses and camels.
Thorn Forests and Scrubs
In mountainous areas, the decrease in temperature with increasing altitude leads to the corresponding change in natural vegetation.
- The wet temperate type of forests are found between a height of 1000 and 2000 meters. Evergreen broad-leaf tress such as oaks and chestnuts predominate.
- Between 1500 and 3000 meters, temperate forests containing coniferous trees like pine, deodar, silver fir, spruce and cedar, are found. These forests cover mostly the southern slopes of the Himalayas: places having high altitude in southern and north-east India. At higher elevations, temperate grasslands are common.
- At high altitudes, generally more than 3600 meters above sea-level, temperate forests and grasslands give way to the Alpine vegetation. Silver fir, junipers, pines and birches are the common trees of these forests.
- Above Alpine vegetation Alpine grasslands are found. These are used extensively for grazing by nomadic tribes like the Gujjars and the Bakarwals. At higher altitudes, mosses and lichens form part of tundra vegetation.
- The common animals found in these forests are Kashmir stag, spotted dear, wild sheep, Jack rabbit, Tibetan antelope, yak, snow leopard, squirrels, Shaggy horn wild ibex, bear and rare red panda, sheep and goats with thick hair.
- The mangrove tidal forests are found in the areas of coasts influenced by tides.
- Mud and silt get accumulated on such coasts.
- Dense mangroves are the common varieties with roots of the plants submerged under water.
- Trees have the capacity to survive is salt as well as fresh water.
- In the Ganga Brahamaputra delta, sundari trees are found, which provide durable hard timber. Palm, coconut, keora, agar, also grow in some parts of the delta.
- Royal Bengal Tiger is the famous animal in these forests.
Frequently Asked Question (FAQs)
Q1. What are the main characteristics of the Thorn Forests and Scrubs?
Ans. The three characteristics of thorn forests and scrubs are:
- Thorn forests are found in regions that receive less than 70 cm of rainfall.
- The thorny trees have long roots that penetrate deep into the ground in search of water.
- The leaves are thick and thin to reduce evaporation.
Q2. What is tropical thorn forest and scrubs?
Ans. Tropical Thorn and Scrubs are forests or areas with an average rainfall of less than 70 cm, which is very small. Thorn forests and shrubs are found in areas with less than 70 cm annual rainfall, usually in the Indian deserts.
Q3. Which type of animals are found in the thorn forest and scrubs?
Ans. The common animals in these forests are rats, mice, rabbits, foxes, wolves, tigers, lions, wild ass, horses, and camels.
Q4. Which characteristic is scrub forest?
Ans. The soil of a tropical scrub forest tends to be arid due to the lack of rainfall and prevalence of evaporation. This biome's soil is well-drained, and xeric soils are often found on old alluvial plains. In areas of rocky soils, thorn scrub vegetation proliferates.
Q5. Where are the thorn forest and scrubs found in India?
Ans. Tropical Thorn Forests and Scrubs are the forests found in the North-Western part of the country, including semi-arid areas of Gujarat, Rajasthan, Uttar Pradesh, Chhattisgarh, Haryana, and Madhya Pradesh. In these areas, annual rainfall is less than 70 cm. Thorn Forest is a scrub-like desert structure.