Natural Vegetation and Forests of India Notes for UPSC

India has a great variety of natural vegetation because of the differences in rainfall, temperature, soil and altitude. From the evergreen rainforests of the Western Ghats and the north-east to the thorny scrub of Rajasthan and the alpine meadows of the Himalayas, each region has its own plants and trees. In the UPSC Civil Services Examination, natural vegetation and forests of India is a regular topic of geography and environment: Prelims asks about forest types, trees, state-wise forest cover and laws, and Mains asks about the causes of deforestation, forest policy and conservation. This note explains the forest types, the distribution, the forest cover data, laws and policies in simple language, with tables.

Factors Affecting Vegetation

The main factors are rainfall (the most important; more rain gives denser forests), temperature, soil (deep, fertile soils support forests; sandy soils support grass and scrub), relief and altitude (temperature falls with height, so vegetation changes from tropical to alpine on a mountain), slope and sunshine and human activity. India has about 47,000 species of plants, which makes it one of the world's richest countries in plant diversity, and it has four of the world's biodiversity hotspots.

Classification of Forests (Champion and Seth)

The classification of the forests of India, given by Champion and Seth (1968), divides them into 16 types in six major groups. For the examination, it is enough to know the five broad types based on climate.

Tropical Evergreen Forests

These are the dense rainforests, with tall trees that reach 60 metres or more, with many layers and a thick canopy that lets little sunlight reach the ground. The trees do not shed all leaves at the same time, so the forest looks green throughout the year. They are found in the Western Ghats, the north-eastern states and the Andaman and Nicobar Islands. The wood is hard and heavy, which makes commercial use difficult because of inaccessibility. The Shola forests of the Nilgiri hills are a special evergreen type at higher altitudes.

Tropical Deciduous Forests

These are the most widespread forests of India and are also called the monsoon forests. The trees shed their leaves in the dry season (spring and early summer) to conserve water. They are of two kinds: moist deciduous forests in the areas of 100 to 200 cm rainfall, which have the valuable teak and sal and are economically the most important, and dry deciduous forests in areas of 70 to 100 cm rainfall. Moist deciduous forests cover the largest area among all types. These forests provide timber, tendu leaves for bidis, lac, gum and honey.

Tropical Thorn Forests and Scrub

These are found in the semi-arid areas with less than 70 cm of rainfall. The vegetation consists of thorny trees and bushes with long roots, small leaves and thick bark to reduce water loss. Examples are babool, khejri, ber, wild date palm and cacti. The khejri tree is vital for desert life in Rajasthan and is the state tree of Rajasthan; the Bishnoi community is famous for protecting it.

Montane Forests

In the mountains, as the altitude increases, the vegetation changes in layers. Between 1,000 and 2,000 m, wet temperate forests of oak, chestnut and maple grow. Between 1,500 and 3,000 m, coniferous forests of pine, deodar, silver fir and spruce are found. Above 3,600 m, there are alpine forests and grasslands with juniper, rhododendron and birch, and above about 4,000 m, there is alpine tundra with mosses and lichens. In the Himalayas, the northern slopes, which are drier, have different vegetation from the wetter southern slopes. Seasonal grazing grounds called bugyals in Uttarakhand and margs in Kashmir are found in the alpine zone.

Mangrove and Littoral Forests

Mangroves grow in the tidal areas of the coast, in the deltas, estuaries and lagoons, where the water is salty. The trees have stilt roots and breathing roots called pneumatophores. The Sundarbans in West Bengal, at the mouth of the Ganga-Brahmaputra delta, is the largest mangrove forest in the world, named after the sundari tree, and is the home of the Royal Bengal Tiger. Other mangroves are found in the Mahanadi, Godavari and Krishna deltas, Bhitarkanika in Odisha, the Andaman and Nicobar Islands and Gujarat. Mangroves protect coasts from cyclones, act as nurseries for fish and store carbon.

Forest Cover of India

The Forest Survey of India (FSI), at Dehradun, publishes the India State of Forest Report (ISFR) every two years. According to the recent reports, the forest cover is about 22 percent of the country's area, and the forest and tree cover together is about 25 percent, against the national policy target of 33 percent. Madhya Pradesh has the largest forest area; the states with the highest forest cover in percentage terms are in the north-east, with Mizoram having the highest share, and Lakshadweep among the Union Territories. The area under very dense forest is small compared with moderately dense and open forest. India's mangrove cover is about 5,000 sq km, and West Bengal has the largest share. Always check the latest ISFR figures before the examination as the numbers change with each report.

Legal Classification of Forests

Under the Indian Forest Act, 1927, forests are classified as Reserved Forests (the most protected; no rights unless permitted), Protected Forests (some rights allowed unless prohibited) and Unclassed Forests (those owned by the government or private bodies, such as in the north-east). Reserved forests account for the largest portion of the recorded forest area.

Forest Policies and Laws

The National Forest Policy of 1952 set the goal of keeping one-third of the area under forests. The policy of 1988 gave priority to ecological balance, conservation and the role of local communities, and set a target of 33 percent forest cover for the country and two-thirds for the hills. The Forest Conservation Act, 1980 restricted the diversion of forest land for non-forest use without central approval; it was renamed and amended as the Van (Sanrakshan Evam Samvardhan) Adhiniyam, 1980 in 2023. The Forest Rights Act, 2006 recognises the rights of forest-dwelling communities. Joint Forest Management (JFM), started in 1990, involves local communities in protection and gives them a share in the produce. The CAMPA (Compensatory Afforestation Fund) funds the plantation done in return for diverted forest land, and the Green India Mission under the National Action Plan on Climate Change aims to increase and improve the forest cover. Van Mahotsav, the festival of planting trees, was started in 1950 by K. M. Munshi.

Threats and Way Forward

The main threats are the diversion of forests for mining, roads, dams and industry, shifting cultivation (jhum) in the north-east, forest fires, illegal logging, overgrazing, encroachment, invasive species such as lantana and the impact of climate change. The solutions include strict enforcement, protection of forest corridors, community participation, agroforestry and social forestry on farm lands and wastelands, afforestation with native species, better fire management with satellite alerts, and giving local people a stake in the benefits. A good Mains answer should balance development needs with conservation and stress the role of the tribal communities.

Forest Products and Economic Importance

Forests give major products such as timber, bamboo and fuelwood, and minor forest produce such as tendu leaves, gum, lac, resins, honey, medicinal herbs and bamboo shoots, which give income to millions of tribal families. They also give indirect benefits: they protect soil, regulate the water cycle, support wildlife, absorb carbon and moderate the climate. The government supports the sale of minor forest produce through a minimum support price scheme and the Van Dhan Vikas Kendras.

Quick Revision

• Moist deciduous (100 to 200 cm) is the most widespread; teak and sal are the key trees.
• Mangroves: Sundarbans (sundari tree); thorn forests: babool, khejri; montane: deodar, pine, fir.
• ISFR is published by the FSI, Dehradun, every two years; the policy target is 33 percent forest and tree cover.
• Laws: Indian Forest Act 1927, FCA 1980 (Van Adhiniyam 2023), FRA 2006, JFM.

Natural vegetation links climate, soil, biodiversity and livelihoods. Learn the table of forest types with rainfall and trees, add the latest forest data and legal framework, and you will be able to answer questions from both geography and environment.

Related Notes to Read Next

Continue your preparation with these related notes from the same subject:

• Indian Minerals, Industries and Energy Resources Notes for UPSC
• Indian Population, Census 2011 and Urbanisation Notes for UPSC
• Indian Coastal Plains, Islands and Lakes Notes for UPSC
• All Indian Geography notes

Frequently Asked Questions (FAQ)

What are the main types of forests in India?

The main types are tropical evergreen, tropical deciduous (moist and dry), tropical thorn forests, montane forests and mangrove forests.

Which is the most widespread forest type in India?

Tropical moist deciduous forests, also called monsoon forests, cover the largest area in India.

Which trees are found in tropical deciduous forests?

Teak, sal, sandalwood, shisham, mahua and tendu are common trees of the tropical deciduous forests.

Where are tropical evergreen forests found?

They are found in the Western Ghats, Assam and the north-eastern hills and the Andaman and Nicobar Islands, where rainfall is above 200 cm.

What is the Sundarbans?

The Sundarbans in West Bengal is the largest mangrove forest in the world, named after the sundari tree, and is home to the Royal Bengal Tiger.

Who publishes the India State of Forest Report?

The Forest Survey of India, located at Dehradun, publishes the India State of Forest Report every two years.

What is the target of forest cover in the National Forest Policy?

The National Forest Policy of 1988 sets a target of 33 percent of the geographical area under forest and tree cover, and 66 percent in the hills.

What are Reserved Forests?

Reserved Forests are the most protected category under the Indian Forest Act, 1927, where rights are not allowed unless specifically permitted.

What is Joint Forest Management?

JFM is a programme started in 1990 in which local communities and the forest department share responsibility for forest protection and share its benefits.

What is the Forest Rights Act, 2006?

It is a law that recognises the rights of forest-dwelling tribal and other communities over forest land and resources.

What are mangroves and why are they important?

Mangroves are salt-tolerant trees of tidal coasts. They protect against storms, act as fish nurseries and store large amounts of carbon.

What is Van Mahotsav?

Van Mahotsav is the annual tree-planting festival started in 1950 by K. M. Munshi to promote afforestation.