Natural Vegetation and Wildlife — AP Class 7 Geography
1. About the Chapter
'India is a MOSAIC of forests, grasslands, and deserts — each with its OWN plants and animals.' Natural vegetation means plants that GROW naturally without human help. This chapter explores the amazing diversity of India's forests, grasslands, and wildlife.
Key Themes
- Factors affecting natural vegetation
- Types of forests in India
- Grasslands of the world
- Wildlife and conservation
- AP: Eastern Ghats forests, Coringa mangroves
- National parks and sanctuaries in AP
2. Factors Affecting Natural Vegetation
What Determines What Grows Where?
| Factor | How It Affects Vegetation |
|---|---|
| Climate | Temperature and rainfall determine forest type |
| Soil | Different plants need different soils |
| Altitude | Higher = cooler → different vegetation |
| Rainfall | More rain = DENSE forests. Less = SCRUB. |
| Sunlight | Plants need light for PHOTOSYNTHESIS |
Rainfall and Vegetation — The Key Relationship
| Rainfall (annual) | Vegetation Type |
|---|---|
| 200+ cm | Tropical evergreen forest |
| 100–200 cm | Tropical deciduous forest |
| 50–100 cm | Thorn forest / scrub |
| Less than 50 cm | Desert vegetation |
3. Types of Forests in India
1. Tropical Evergreen Forests
'These forests are DENSE, DARK, and GREEN all year — they NEVER shed their leaves.'
| Feature | Description |
|---|---|
| Rainfall | 200+ cm per year |
| Location | Western Ghats, Northeast India, Andaman |
| Trees | Ebony, mahogany, rosewood (HARDWOOD) |
| Animals | Elephants, monkeys, bats, birds |
| Leaves | BROAD — to maximise sunlight |
| AP presence | VERY limited (small patches in Eastern Ghats) |
2. Tropical Deciduous Forests — AP's MAIN Forest
'These trees SHED their leaves in the DRY season to CONserve water — hence DECIDUOUS.'
| Feature | Description |
|---|---|
| Rainfall | 100–200 cm per year |
| Location | MOST of India — including AP |
| Trees | Teak, sal, sandalwood, bamboo |
| Animals | Tigers, deer, bears, birds |
AP Focus: Eastern Ghats Forests
AP's forests are MAINLY tropical deciduous:
| Type | Rainfall | Trees | Districts |
|---|---|---|---|
| Moist deciduous | 100–150 cm | Teak, bamboo, sal | Srikakulam, Vizianagaram, Visakhapatnam |
| Dry deciduous | 70–100 cm | Sandalwood, terminalia, anogeissus | Kurnool, Kadapa, Chittoor |
'Sandalwood is AP's MOST VALUABLE tree — but ILLEGAL logging threatens it.'
3. Thorn Forests and Scrubs
| Feature | Description |
|---|---|
| Rainfall | Less than 50 cm per year |
| Location | Rajasthan, parts of Rayalaseema |
| Trees | Acacia, cactus, thorny bushes |
| Animals | Camels, rodents, snakes |
4. Montane Forests
'Mountain forests — vegetation changes with ALTITUDE.'
| Altitude | Vegetation |
|---|---|
| 1,000–2,000 m | Temperate forests (oak, pine) |
| 2,000–3,000 m | Coniferous forests (deodar, fir) |
| Above 3,000 m | Alpine meadows → no trees |
Montane forests are found in the HIMALAYAS — NOT in AP.
5. Mangrove Forests
'These forests grow in SALTY water along the COAST — trees have ROOTS that stick UP from the mud.'
| Feature | Description |
|---|---|
| Location | Deltas, tidal areas |
| Key tree | Mangrove (various species) |
| Animals | Tigers, crocodiles, fish, birds |
AP Focus: Coringa Mangroves
'The SECOND LARGEST mangrove ecosystem in India — after the Sundarbans.'
| Aspect | Detail |
|---|---|
| Location | Godavari-Krishna delta (East Godavari district) |
| Area | 235 km² |
| Key species | Avicennia, Rhizophora (mangrove types) |
| Wildlife | Fishing cat, otters, crocodiles, 120+ bird species |
| Importance | Protects coast from CYCLONES and TSUNAMIS |
| Threats | SHRIMP farming, deforestation, climate change |
'Coringa mangroves are a NATURAL barrier against cyclones — they SAVED lives during the 2014 Hudhud cyclone.'
4. Grasslands of the World
| Grassland | Location | Characteristics | Animals |
|---|---|---|---|
| Savanna | Africa (Kenya, Tanzania) | Tall grass, scattered trees | Lions, zebras, giraffes |
| Prairies | North America (USA, Canada) | Temperate grassland (wheat) | Bison, coyotes |
| Steppes | Central Asia (Russia, Mongolia) | Cold, short grass | Horses, sheep |
| Pampas | South America (Argentina) | Fertile grassland | Cattle, rheas |
| Veldts | South Africa | High plateau grass | Springbok, lions |
5. Wildlife in India
Major Animals of India
| Animal | Found in | Type of Forest |
|---|---|---|
| Bengal Tiger | Central India | Deciduous |
| Asian Elephant | South India, Northeast | Evergreen/Deciduous |
| One-horned Rhino | Assam | Riverine grasslands |
| Lion | Gujarat (Gir) | Dry deciduous |
| Leopard | Throughout India | Various |
AP Wildlife
| Species | Location in AP | Status |
|---|---|---|
| Tiger | Nagarjunasagar-Srisailam Tiger Reserve | PROTECTED |
| Leopard | Eastern Ghats forests | Vulnerable |
| Sloth bear | Forested districts | Threatened |
| Blackbuck | Rollapadu (Kurnool) | Endangered |
| Peacock (National bird) | Throughout AP | Protected |
| Fishing cat | Coringa mangroves | Vulnerable |
National Parks and Sanctuaries in AP
| Protected Area | District | Key Species |
|---|---|---|
| Nagarjunasagar-Srisailam Tiger Reserve | Guntur, Nalgona, Kurnool | Tigers, leopards, deer |
| Kolleru Wildlife Sanctuary | Krishna, Godavari | Migratory birds |
| Coringa Wildlife Sanctuary | East Godavari | Fishing cat, birds |
| Rollapadu Wildlife Sanctuary | Kurnool | Great Indian bustard, blackbuck |
| Kambalakonda Wildlife Sanctuary | Visakhapatnam | Deer, wild boar |
6. Conservation of Natural Vegetation and Wildlife
Why Conserve?
- Forests provide OXYGEN, absorb CO₂
- Wildlife is part of FOOD CHAINS
- Forests prevent SOIL EROSION
- Forests affect RAINFALL (transpiration → clouds)
- Many plants are SOURCES of MEDICINE
- 'When we DESTROY a forest, we DESTROY an ENTIRE ecosystem'
Threats
| Threat | Impact |
|---|---|
| Deforestation | Habitat LOSS for wildlife |
| Poaching | Animals KILLED for body parts (tiger bones, ivory) |
| Pollution | Poisoned water, air |
| Climate change | Shifting habitats |
| Urbanisation | Land CONVERTED to cities, roads |
Conservation Efforts
| Initiative | Focus |
|---|---|
| Project Tiger (1973) | Save Bengal tiger — 51 reserves exist |
| Project Elephant (1992) | Protect elephants and corridors |
| Wildlife Protection Act (1972) | Legal protection for animals |
| Biosphere Reserves | Large conservation zones (like Nilgiri) |
7. Comparison Table: Forest Types
| Forest Type | Rainfall | Trees | AP Presence |
|---|---|---|---|
| Evergreen | 200+ cm | Rosewood, mahogany | Minimal patches |
| Deciduous (moist) | 100–150 cm | Teak, bamboo, sal | YES — North AP |
| Deciduous (dry) | 70–100 cm | Sandalwood, terminalia | YES — most of AP |
| Thorn | Under 50 cm | Acacia, cactus | Rayalaseema parts |
| Mangrove | Coastal-tidal | Avicennia, Rhizophora | YES — Coringa |
8. Common Mistakes
- Thinking all forests are the same — Each forest type has DIFFERENT trees, animals, and climate needs.
- Confusing 'deciduous' with 'evergreen' — Deciduous = shed leaves. Evergreen = keep leaves all year.
- Forgetting Coringa mangroves — AP's UNIQUE mangrove ecosystem — important for exams.
- Believing grasslands are in India — India has VERY FEW natural grasslands — most have been converted to farms.
- Thinking conservation is only about animals — Conservation includes PLANTS, FORESTS, and ECOSYSTEMS too.
9. Exam Focus
2 Marks
Q: Name the two main types of forests found in AP. A: Tropical moist deciduous (north coastal AP) and tropical dry deciduous (Rayalaseema and interior).
Q: What are mangroves? A: Trees that grow in saline coastal water with roots exposed above mud.
4 Marks
Q: Describe the Coringa mangroves and their importance. A: Coringa mangroves in East Godavari district are India's second-largest mangrove ecosystem. They protect the coast from cyclones and tsunamis, support 120+ bird species, fishing cats, and otters. They are VITAL for fisheries and biodiversity. Threats include shrimp farming and deforestation.
6 Marks
Q: Explain the types of forests found in India with special reference to AP. A: India has five major forest types: tropical evergreen (high rainfall, Western Ghats), tropical deciduous (100–200 cm rain — AP's MAIN forest type), thorn forests (low rain, Rayalaseema), montane (Himalayas), and mangroves (coasts). AP is dominated by TROPICAL DECIDUOUS forests — moist in the north (Srikakulam, Visakhapatnam) and dry in the south (Kurnool, Kadapa). The Coringa mangroves in the Godavari delta are a UNIQUE ecosystem. The Eastern Ghats forests support tigers, leopards, and the valuable sandalwood tree.
10. Quick Self-Test
-
Which type of forest is most common in AP? Answer: Tropical deciduous (moist and dry)
-
Where are Coringa mangroves located? Answer: Godavari-Krishna delta, East Godavari district (AP)
-
Name a famous tiger reserve in AP. Answer: Nagarjunasagar-Srisailam Tiger Reserve
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What is the MOST valuable tree of AP's forests? Answer: Sandalwood
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Which AP sanctuary protects the Great Indian Bustard? Answer: Rollapadu Wildlife Sanctuary (Kurnool)
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What is the main difference between evergreen and deciduous forests? Answer: Evergreen trees keep leaves all year; deciduous trees shed them in dry season.
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Name a threatened animal found in Coringa mangroves. Answer: Fishing cat
-
Name one conservation project for Indian wildlife. Answer: Project Tiger / Project Elephant
11. Conclusion
'India's forests and wildlife are a PRECIOUS heritage — not just for INDIA, but for the WORLD.' AP's forests — from the teak-rich forests of the north to the sandalwood groves of the south, from the Coringa mangroves to the Kolleru wetlands — are home to EXTRAORDINARY biodiversity. 'Protecting them is NOT a choice — it is a NECESSITY for our OWN survival.'
Key takeaways:
- India has 5 major forest types: evergreen, deciduous, thorn, montane, mangrove
- AP is mainly tropical deciduous forest (moist and dry)
- Coringa mangroves are India's second-largest — vital for coastal protection
- AP has important wildlife sanctuaries and tiger reserves
- Conservation is critical — forests provide oxygen, water, and livelihoods
