Natural Vegetation and Forests of India

1. Natural vegetation and the basis of India's forest types

Read the detailed note →

• Natural vegetation is a group of plants left undisturbed for a long time, so each species has fully adjusted to the local climate and soil. Planted vegetation is different: orchards, parks and gardens. The same mango or guava tree can be wild in one place and planted in another (Class 11, Natural Vegetation).
• India's range: temperate forest in the Himalayas, rainforest in the Western Ghats and Andaman and Nicobar, mangroves in the deltas, and thorny scrub and cacti in Rajasthan.
• What controls it: rainfall (how much falls, and how long the dry season lasts), temperature (it falls with height and latitude), relief and slope aspect (which way a slope faces), soil, and human use. Rainfall matters most in the plains and plateaus. Temperature matters most in the mountains.
• Forest types of India: NCERT gives five groups, based on the main vegetation and the climate:

Type	Rainfall	Main regions	Typical species
Tropical evergreen and semi-evergreen	Over 200 cm; above 22°C	Western Ghats (western slopes), northeast hills, Andaman and Nicobar	Rosewood, mahogany, ebony
Tropical deciduous	70-200 cm	Peninsula, Himalayan foothills, Uttar Pradesh and Bihar plains	Teak, sal, tendu
Tropical thorn	Under 50 cm	Rajasthan, Gujarat, southwest Punjab, Haryana	Babool, khejri
Montane	Set by altitude	Himalayas, Nilgiris, Anaimalai, Palani hills	Oak, chir pine, deodar
Littoral and swamp	Tidal coasts and wetlands	Sundarbans, east-coast deltas, Andaman and Nicobar	Mangroves (sundari)

• Map practice: lay the 200 cm and 50 cm isohyets (lines joining places with equal rainfall; see indian-climate-monsoon) over the vegetation map in Figure 5.2. Read this way, the vegetation map is really a map of rainfall and relief.
• Beyond NCERT: Champion and Seth (1968) set out 16 type groups and about 200 sub-types. FSI uses this standard. NCERT's five types are a simpler version of it.

2. Tropical evergreen and semi-evergreen forests

Read the detailed note →

• Tropical evergreen forest grows on the western (windward, rain-facing) slopes of the Western Ghats, in the northeast hills and on the Andaman and Nicobar Islands. These places get over 200 cm of rain, and the mean annual temperature is above 22°C.
• Structure: the forest grows in layers. Shrubs and creepers grow near the ground, short trees above them, and tall trees reach 60 m or more at the top.
• Trees have no fixed season for shedding leaves, flowering or fruiting, so the forest stays green all year.
• Species: rosewood, mahogany, aini, ebony.
• Uses are limited. The wood is hard, many species grow mixed together, and the forests are hard to reach. Deciduous forests are easier to use commercially.
• Tropical semi-evergreen forest grows in the less rainy parts of the same regions. It mixes evergreen and moist deciduous trees, and climbers growing underneath keep it green. Main species: white cedar, hollock, kail.
• Beyond NCERT: the Western Ghats evergreen belt is part of the Western Ghats-Sri Lanka biodiversity hotspot and a UNESCO World Heritage Site (2012). Silent Valley in Kerala is the classic example. Endemism (species found nowhere else) is covered in biodiversity-conservation.

3. Tropical deciduous and thorn forests

Read the detailed note →

• Tropical deciduous forest (also called monsoon forest) is the most widespread forest type in India. It grows where rain is 70-200 cm. The trees shed their leaves in the dry season to save water.
• Moist deciduous forest (100-200 cm) grows in the northeastern states along the Himalayan foothills, on the eastern slopes of the Western Ghats and in Odisha.
• Species: teak, sal, shisham, hurra, mahua, amla, semul, kusum, sandalwood.

• Teak leads in the Peninsula (Madhya Pradesh, Maharashtra, Karnataka, Kerala). Sal leads on the Chota Nagpur plateau, in Odisha and Chhattisgarh, and in the terai-bhabar foothills.

• Sandalwood is a fragrant tree of Karnataka and Tamil Nadu, valued for its oil and for carving. NCERT classes it as a deciduous species, which is the answer to the Class 11 exercise question.

• Dry deciduous forest (70-100 cm) covers the rainier parts of the Peninsula and the Uttar Pradesh-Bihar plains. It looks like parkland: teak and other trees stand among grass. In the dry season it looks like grassland with bare trees.
• Species: tendu, palas, amaltas, bel, khair, axlewood.
• It changes into moist deciduous forest on wetter edges and into thorn forest on drier edges.

• It is the type most exposed to fire and clearing (forest fires are covered in natural-hazards-disasters).

• Tropical thorn forest (under 50 cm) grows in the semi-arid parts of southwest Punjab, Haryana, Rajasthan, Gujarat, Madhya Pradesh and Uttar Pradesh.

• Plants stay leafless for most of the year, so the forest looks like scrub. Tussocky grass (grass growing in thick clumps) reaches up to 2 m.
• Species: babool, ber, wild date palm, khair, neem, khejri, palas.

• Plants cut water loss with long roots, thick fleshy stems, small leaves and thorns.

• Beyond NCERT: the Bishnois protect khejri trees. At Khejarli in 1730, Bishnois gave their lives to save khejri trees (Class 10, Forest and Wildlife Resources, describes Bishnoi villages).

4. Montane forests: Himalayan zonation and the southern hills

Read the detailed note →

• Montane forests change with height, because temperature falls as altitude rises. NCERT splits them into northern (Himalayan) and southern mountain forests.
• Altitudinal zonation of Himalayan vegetation (vegetation changing in belts with height), from the tropical belt up to tundra:

Altitude	Vegetation
Foothills	Deciduous forest
1,000-2,000 m	Wet temperate forest: evergreen broadleaf oak and chestnut (northeast hills, hilly West Bengal, Uttarakhand)
1,500-1,750 m	Chir pine forest
Temperate zone	Deodar; chinar and walnut (support Kashmir handicrafts)
2,225-3,048 m	Blue pine and spruce; temperate grasslands
3,000-4,000 m	Alpine forest: silver fir, juniper, pine, birch, rhododendron
Above	Mosses and lichens (tundra)

• Chir pine is a commercial tree that gives timber and resin. The British spread it in place of oak. Its dry, resin-rich needles now feed spring forest fires in Uttarakhand.
• Deodar (Himalayan cedar) grows naturally only in the western Himalayas (it is endemic there). Its strong wood resists rot and is used in construction.
• Alpine pastures are grasslands above the tree line. Gujjars, Bakarwals, Bhotiyas and Gaddis use them for transhumance (moving herds up to high pastures in summer and down in winter). In Uttarakhand they are called bugyals (for example Bedni and Ali); trekking and grazing now put them under stress.
• Aspect: south-facing Himalayan slopes face the monsoon winds and get more rain, so they carry thicker forest than the drier north-facing slopes.
• Southern mountain forests grow in the Western Ghats, Vindhyas and Nilgiris. These hills are near the tropics and only about 1,500 m high, so the forest is temperate higher up and subtropical lower down.
• Shola forest is made up of stunted (short, slow-growing) evergreen patches in sheltered folds of the Nilgiri, Anaimalai and Palani hills, set among high grasslands. Important trees: magnolia, laurel, cinchona, wattle. Similar forests grow in the Satpura and Maikal ranges.
• Beyond NCERT: shola-grassland soaks up rain like a sponge and feeds rivers. Tea, eucalyptus and wattle plantations have replaced much of the grassland.

5. Littoral and swamp forests: wetlands and mangroves

Read the detailed note →

• Littoral and swamp forests grow on coasts and in wetlands. They include the mangroves of deltas and estuaries and the swamp forests of marshes.
• Wetlands (Class 11, Natural Vegetation): 3.9 million ha in all, about 70 per cent of it under paddy. NCERT names Chilika (Odisha) and Keoladeo (Bharatpur) as Ramsar waterfowl sites and groups India's wetlands into eight categories. These range from Deccan reservoirs and lagoons on the southwest coast, through the saline Rann and Gulf of Kachchh, Gangetic marshes, Brahmaputra floodplains and Kashmir-Ladakh lakes, to the island mangroves. India's Ramsar sites now number well over 80 (verify current; see biodiversity-conservation).
• Mangrove: salt-tolerant trees on salt marshes, tidal creeks, mudflats and estuaries.
• They have breathing roots (pneumatophores, which poke up out of the mud to take in air) and stilt roots.
• They shelter birds and serve as fish nurseries.

• Area: NCERT gives 4,992 sq km, 7 per cent of the world's mangroves. ISFR 2023 gives about the same (verify current). West Bengal holds the largest share, then Gujarat and Andaman and Nicobar (verify current).

• Map points:

• Sundarbans (West Bengal): the world's largest mangrove forest, shared with Bangladesh. It is known for the sundari tree and the Royal Bengal tiger, and is a UNESCO World Heritage Site and a Ramsar site.
• Bhitarkanika mangroves: India's second largest, in the Brahmani-Baitarani delta of Odisha. It has saltwater crocodiles, and nearby Gahirmatha is a mass-nesting beach for olive ridley turtles.

• Coringa (Godavari delta, Andhra Pradesh), Pichavaram (Tamil Nadu), Mahanadi and Krishna deltas.

• Why they matter: they shield the coast from storm surge and tsunami (evidence from 2004), store "blue carbon" (carbon held in coastal ecosystems) and support fisheries. Threats include aquaculture ponds, land reclamation and port building.

• MISHTI (Mangrove Initiative for Shoreline Habitats and Tangible Incomes) was announced in the 2023-24 Budget and launched on 5 June 2023. It plants mangroves along the coast and on salt-pan land, with funds from MGNREGS, CAMPA and other schemes. The target is about 540 sq km over five years (verify current).

6. How much forest? Forest area, forest cover and the ISFR

Read the detailed note →

• Forest cover and forest area are not the same thing, and the Class 11 exercise asks for the difference.
• Forest area (recorded forest) is land listed as forest in government records, whether or not trees stand on it.
• Forest cover is land actually under tree canopy, as seen by satellite, whoever owns it. It includes orchards and plantations.

• The two do not match. Recorded forest can be bare, and forest cover can lie outside it.

• The Forest Survey of India (FSI) is based in Dehradun and works under MoEFCC. It was set up in 1981 and maps forests from satellite data (LISS-III, about 1:50,000; verify current).

• The India State of Forest Report (ISFR) is FSI's biennial report (every two years), published since 1987.
• Forest cover classes (FSI): forest cover is any land over 1 ha with canopy density above 10 per cent (canopy density is the share of the ground shaded by tree crowns).
• Very dense: 70 per cent and above.
• Moderately dense: 40-70 per cent.
• Open: 10-40 per cent.

• Scrub (below 10 per cent) is not counted as forest. Tree cover means tree patches under 1 ha outside recorded forest.

• ISFR 2023 (released December 2024): forest and tree cover about 25 per cent of India's area (forest cover about 21.8 per cent, tree cover about 3.4 per cent). By area, the largest forest cover is in Madhya Pradesh, then Arunachal Pradesh and Chhattisgarh. By percentage, Lakshadweep and Mizoram lead (all verify current).

• The debate: cover is still well below the 33 per cent target. Critics say counting plantations and orchards inflates the "forest" figure. They also say losses of very dense forest in the northeast are hidden by gains in open forest. Class 10, Resources and Development notes that forest area has hardly grown since 1960-61 (see resources-development-planning).

7. Who owns the forests: colonial legacy and legal categories

Read the detailed note →

• Colonial exploitation of forests: the British cut Indian forests on a large scale for railways, construction and shipbuilding.
• Oak forests in Garhwal and Kumaon were replaced by chir pine for railway sleepers.
• Forests were cleared for tea, rubber and coffee plantations.

• Forests that had been kept for protection were now used for profit.

• Beyond NCERT: the Imperial Forest Department was set up in 1864 under Dietrich Brandis. Forest Acts followed in 1865 and 1878.

• The Indian Forest Act 1927 is the colonial-era law that still applies. It lets governments declare reserved, protected and village forests, and it controls the movement of forest produce and forest offences. Its 2017 amendment took bamboo grown outside forests out of the definition of "tree", so farmers can cut and sell it freely.
• Legal categories (Class 10, Forest and Wildlife Resources):
• Reserved forest: more than half of forest land, with the fullest protection. All activities are banned unless permitted.
• Protected forest: almost one-third of forest land, kept from further loss. All activities are allowed unless banned, so local people can still graze animals and collect produce.

• Unclassed forest: other forests and wastelands owned by the government, private people or communities.

• Reserved and protected forests together are called the permanent forest estate.

• State patterns:
• Madhya Pradesh has the largest permanent forest area (75 per cent of its forest).
• Jammu and Kashmir, Andhra Pradesh, Uttarakhand, Kerala, Tamil Nadu, West Bengal and Maharashtra have mostly reserved forest.
• Bihar, Haryana, Punjab, Himachal Pradesh, Odisha and Rajasthan have mostly protected forest.
• The northeastern states and parts of Gujarat have mostly unclassed forest under local communities (Sixth Schedule and customary ownership are covered in the polity subject).

8. Forest policy and forest law since Independence

Read the detailed note →

• National Forest Policy 1952: India's first forest policy. It aimed for one-third of land under forest and treated forests as a state asset for revenue and industry.
• National Forest Policy 1988 aims for:
• 33 per cent of the area under forest (two-thirds in hills and mountains);
• environmental stability, and restoring forests where the ecological balance is broken;
• conserving natural heritage, biodiversity and the gene pool;
• checking soil erosion, the spread of deserts, floods and droughts;
• social forestry and planting on degraded land;
• more productive forests, so rural people get timber, fuel, fodder and food, and other materials replace wood;

• a mass people's movement that includes women. The big shift: ecology and local needs now come before revenue. A draft policy was circulated in 2018 but not adopted (verify current).

• Forest (Conservation) Act 1980: forest land can be used for other purposes only with prior Central approval.

• TN Godavarman Thirumulpad case: filed in 1995. In its order of 12 December 1996, the Supreme Court said "forest" takes its dictionary meaning, whoever owns the land. Such land is called deemed forest. The case led to the Central Empowered Committee and CAMPA.
• Compensatory Afforestation Fund Act 2016: project builders who take forest land pay for new planting and for the forest's net present value (NPV, the money value of what the forest provides). The money goes into a National Fund and State Funds, with 90 per cent to states, managed by CAMPA. Critics point to plantations on non-forest land and to misuse of the funds.
• Forest (Conservation) Amendment Act 2023 (Van (Sanrakshan Evam Samvardhan) Adhiniyam):
• It renamed the 1980 Act and limited it to land notified under the 1927 Act or recorded as forest on or after 25 October 1980.
• It exempted strips along roads and railways, strategic projects within 100 km of borders, the LoC and the LAC, and security works up to 10 ha.
• It allowed zoos, safaris and ecotourism.

• Critics say it weakens deemed-forest protection. In February 2024 the Supreme Court ordered governments to keep using the dictionary meaning of forest (verify current).

• Forest Rights Act 2006 recognises the forest rights of Scheduled Tribes and other traditional forest dwellers.

• Individual rights to land they occupy, up to 4 ha.
• Community rights over grazing, fishing and minor forest produce.
• Community forest resource rights, to protect and manage forests.
• Other traditional forest dwellers must show three generations (75 years) of residence before 13 December 2005.
• The gram sabha (village assembly) starts the claims process, and the Ministry of Tribal Affairs is the nodal ministry. The Niyamgiri case (2013) made gram sabha consent central.

9. Social forestry, farm forestry and greening outside forests

Read the detailed note →

• Social forestry means managing and protecting forests and planting trees on barren land, to help the environment, society and rural development. The National Commission on Agriculture (1976) split it into three: urban, rural and farm forestry.
• Urban forestry: raising trees on public and private land in and around towns, such as green belts, parks, roadside avenues, and industrial and commercial green belts.
• Rural forestry has two parts:
• Agroforestry: trees and crops on the same land, including waste patches. Food, fodder, fuel, timber and fruit come from it together.

• Community forestry: trees on village pastures, temple land, roadsides, canal banks, railway strips and school land. The whole community benefits, including landless people who would otherwise get nothing.

• Farm forestry: farmers grow trees on their own land (field edges, pastures, around homes and cowsheds) for sale or for home use. State forest departments give free seedlings to small and medium farmers.

• Beyond NCERT: the National Agroforestry Policy 2014 (India was the first country to have one); poplar and eucalyptus grown on Punjab-Haryana farms; the 2017 bamboo amendment (Section 7).
• Critique: early social forestry often planted fast-growing eucalyptus for industry, not fuel and fodder for the poor.
• Aravalli Green Wall Project (launched 2023): greening a 5 km buffer around the Aravalli range across Gujarat, Rajasthan, Haryana and Delhi. It aims to stop the Thar Desert spreading east and to restore degraded land, on the model of Africa's Great Green Wall. Links: the UNCCD land-restoration target (soils-of-india) and the Green India Mission (climate-change).

10. People and forests: tribal livelihoods, Chipko and joint forest management

Read the detailed note →

• Tribal communities and forests: for many tribal people, the forest is home, livelihood and their very existence. It gives food, fruit, edible leaves, honey, roots, game, and material for houses and crafts. NCERT says tribal people should be made growers, not just collectors, of minor forest produce, and partners in conservation.
• Community conservation (Class 10, Forest and Wildlife Resources):
• In Sariska, villagers fought mining by using the Wildlife Protection Act.
• Five villages of Alwar district declared 1,200 ha as the Bhairodev Dakav "Sonchuri", with their own rules.

• Sacred groves (forest patches left untouched for religious reasons): the Mundas and Santhals worship mahua and kadamba; Bishnois protect blackbuck, nilgai and peacocks. Beyond NCERT: kavu (Kerala), law kyntang (Mawphlang, Meghalaya), devrai (Maharashtra).

• Chipko movement:

• It began in 1973 in Chamoli (now Uttarakhand) against commercial tree felling.
• At Reni in March 1974, women led by Gaura Devi hugged trees to stop loggers.
• It is linked to Chandi Prasad Bhatt and Sunderlal Bahuguna.
• It led to a 15-year ban (1980) on felling green trees above 1,000 m in the Uttarakhand Himalaya, and showed that community planting of native species works.

• Related movements: Appiko (Karnataka, 1983), Beej Bachao Andolan (Tehri) and Navdanya (chemical-free, diverse farming).

• Joint forest management (JFM) has run formally since 1988, when Odisha passed the first resolution. National guidelines followed on 1 June 1990.

• Village committees protect degraded forest land managed by the forest department.
• In return they get non-timber forest produce and a share of the timber.

• Critique: the committees still depend on the forest department. The FRA gives gram sabhas legal rights instead.

• Exam frame: from exclusion (colonial reserves) to participation (JFM) to rights (FRA).

11. Protected areas and biosphere reserves on the map

Read the detailed note →

• Wildlife (Class 11, Natural Vegetation): India has about 4-5 per cent of the world's known species.
• Causes of decline: industry using up forest resources; land cleared for farms, settlements, roads, mines and reservoirs; lopping trees for fodder and fuel; grazing; hunting for sport and commercial poaching; forest fires.
• Wildlife (Protection) Act 1972: gives legal backing to national parks, sanctuaries and closed areas. It was amended in 1991 to protect plants as well.
• Counts: NCERT gives 107 national parks and 573 sanctuaries (verify current with the ENVIS database; conservation and community reserves are newer categories).
• National park vs sanctuary:
• National park: no forestry, grazing or farming is allowed.

• Sanctuary: some harvesting and collection of minor forest produce is allowed, if animals are not harmed.

• Biosphere reserves come under UNESCO's Man and Biosphere (MAB) programme.

• Zones: core (strictly protected), buffer and transition.
• Objectives: conservation, development, and logistic support (research and education).
• Count: Table 5.1 lists 18, from Nilgiri (1986, the first; Tamil Nadu, Kerala, Karnataka) to Panna (2011, Madhya Pradesh).

• UNESCO listing: NCERT says 12 are in UNESCO's World Network. Cold Desert (Himachal Pradesh) was reportedly added in 2025, making 13 (verify current).

• Exercise map list: Nanda Devi (Uttarakhand), Sunderbans (West Bengal), Gulf of Mannar (Tamil Nadu), Nilgiri. Kachchh and Gulf of Mannar come up in "largest by area" questions.

• Project Tiger, Project Elephant and Ramsar detail are covered in biodiversity-conservation.

---

Exam angles

Prelims — high-yield facts and traps

• Rainfall limits: evergreen over 200 cm (and above 22°C); moist deciduous 100-200 cm; dry deciduous 70-100 cm; thorn under 50 cm. Deciduous is the most widespread type. "Evergreen is the most widespread type" is FALSE.
• Species matching:
• Rosewood, mahogany, ebony → evergreen.
• White cedar, hollock, kail → semi-evergreen.
• Teak, sal, sandalwood → moist deciduous.
• Tendu, palas, axlewood → dry deciduous.
• Babool, khejri → thorn.

• Magnolia, cinchona, wattle → southern montane.

• Himalayan belts: oak and chestnut 1,000-2,000 m; chir pine 1,500-1,750 m; blue pine and spruce 2,225-3,048 m; alpine 3,000-4,000 m.

• Sholas grow in the Nilgiri, Anaimalai and Palani hills. South-facing Himalayan slopes are wetter.
• Mangroves: Sundarbans (West Bengal), Bhitarkanika (Odisha), Coringa (Andhra Pradesh), Pichavaram (Tamil Nadu), Gulf of Kachchh, Andaman and Nicobar. NCERT figure: 4,992 sq km (7 per cent of the world).
• Forest area vs forest cover:
• FSI canopy classes: 70, 40 and 10 per cent, on patches of at least 1 ha.
• FSI is in Dehradun, and ISFR is biennial.

• Trap: "Forest cover counts only recorded forest land" is FALSE.

• Legal categories: reserved (more than half of forest land; all activities banned unless permitted); protected (about one-third; all activities allowed unless banned); unclassed (mostly in the northeast). Madhya Pradesh has the largest permanent forest estate.

• Policy: the 1988 policy targets 33 per cent (two-thirds in hills). NCA 1976 split social forestry into urban, rural and farm forestry. JFM began in Odisha in 1988.
• Laws:
• IFA 1927 (bamboo amendment 2017).
• FCA 1980 and its 2023 amendment (100 km border exemption).
• Godavarman (1996: forest takes its dictionary meaning).
• CAF Act 2016 (CAMPA; 90 per cent of funds to states).

• FRA 2006 (up to 4 ha; 75 years of residence; gram sabha).

• Biosphere reserves: 18 in all. Nilgiri was first (1986) and Panna was last (2011). UNESCO-listed: 12 per NCERT, now reportedly 13 (verify current). A national park allows no grazing; a sanctuary allows limited use.

Mains — GS-I themes

1. How rainfall and relief decide the spread of India's forest types; the vegetation map read as a rainfall-relief map, with a sketch map.
2. Himalayan altitudinal zonation and the effect of aspect; how montane forest supports transhumance.
3. Why India has not reached 33 per cent forest cover despite plantations and social forestry; strengths and limits of the ISFR method.
4. From exclusion to rights: colonial reserves → JFM → Forest Rights Act in forest governance.
5. Does the Forest (Conservation) Amendment Act 2023 balance strategic and development needs with ecological security?
6. Mangroves and shola-grassland as natural defences against disasters and as sources of water security.
7. Compensatory afforestation: can planting elsewhere replace natural forest?
8. Chipko and sacred groves: lessons from community conservation.

Current-affairs hooks

• Each new ISFR: changes in forest cover, very dense forest lost in the northeast, mangrove and carbon-stock figures (verify current).
• State expert committee reports and court cases on deemed forests under the 2023 amendment.
• Forest-fire seasons in Uttarakhand and central India; FSI fire alerts.
• FRA claims, rejections, eviction orders and community forest resource titles.
• MISHTI progress; cyclones and mangroves; tiger-human conflict in the Sundarbans.
• Aravalli mining, Green Wall progress and Supreme Court orders on the definition of the Aravallis (verify current).
• New Indian biosphere reserves added to UNESCO's MAB network (verify current).