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Natural Vegetation
India’s natural vegetation is highly diverse, influenced by various factors such as altitude, climate, temperature, and rainfall. This diversity is a result of the country’s varied landscapes and climate zones, which support different types of plant species.
India’s Biodiversity Rankings
Fourth in Asia for plant diversity and tenth globally.
One of twelve mega-biodiversity countries.
Home to 15,000 flowering plant species, 6% of world’s total.
Contains non-flowering plants like ferns, algae, fungi.
Varieties influenced by various factors.
Vegetation Influences:
- Land and Soil Characteristics
- Temperature and Rainfall
- Temperature, humidity, rainfall, and soil determine vegetation types.
- High rainfall supports denser vegetation.
- Sunlight
Types of Vegetation in India: India’s vegetation can be classified into several categories based on plant structure, type, and floristic nature. There are 16 major types of forests, which are further divided into 221 sub-types. These major forest types include:
- Tropical Evergreen and Semi-Evergreen Forests: Known for their lushness, these forests thrive in warm and humid regions with 130 cm to 250 cm of rainfall and temperatures between 22°C and 27°C.
- They are located in regions like the Andaman and Nicobar Islands, Assam, and the Western Ghats, and they make up 49% of India’s natural vegetation area.
- They are located in regions like the Andaman and Nicobar Islands, Assam, and the Western Ghats, and they make up 49% of India’s natural vegetation area.
- Tropical Semi-Evergreen Forests: These woods, which combine traits of deciduous and evergreen forests, are prevalent in regions with moderate rainfall.
- Human activity often influences the forest structure, and species such as white cedar, hillock, and kail are common in these areas.
- Human activity often influences the forest structure, and species such as white cedar, hillock, and kail are common in these areas.
- Tropical Deciduous Forests: These are the most widespread forest type in India, particularly in areas with rainfall between 70 cm and 200 cm.
- Trees in these forests shed their leaves during the dry season. Water availability further separates these woods into dry deciduous forests and wet deciduous forests.
- Moist Deciduous Forests: Found in regions with rainfall between 100 cm and 200 cm, such as Madhya Pradesh, Uttar Pradesh, Bihar, and the Northeastern states.
- Teak, sal, and mahua are among the plants that define these woodlands.
- Dry Deciduous Forests: These forests grow in regions with 70 cm to 100 cm of rainfall and experience long dry periods.
- This region is home to many trees, especially in regions like the Ganga plain and southern India, including tamarind, acacia, and teak.
- This region is home to many trees, especially in regions like the Ganga plain and southern India, including tamarind, acacia, and teak.
- Trees in these forests shed their leaves during the dry season. Water availability further separates these woods into dry deciduous forests and wet deciduous forests.
- Tropical Grasslands and Scrubs: These woods may be found in areas that get between 30 and 60 cm of rainfall.60 cm.
- The vegetation includes thorny bushes and scrub trees.
- Common species in these regions are acacias, euphorbias, and wild date palms.
- This type of forest is prevalent in areas like Saurashtra, Punjab, and parts of Madhya Pradesh and Andhra Pradesh.
- Wetlands, Littoral, and Swamp Forests: India’s wetlands include a wide range of ecosystems, such as freshwater lakes, marshes, and tidal forests.
- These areas are important habitats for various species and play a crucial role in maintaining biodiversity.
- The coasts of India, including areas like the Sundarbans and the Andaman and Nicobar Islands, are home to mangrove forests, which can survive in both fresh and saltwater.
These varying types of vegetation contribute significantly to India’s rich biodiversity and ecological health, supporting a wide range of wildlife and plant life across the country. The distribution and density of different vegetation types depend on the interplay of climate, terrain, and other environmental factors.
Montane Forests in India:
- Located in mountainous regions like Himalayas.
- Shaped by unique climate and altitude conditions.
Northern Montane Forests:
Himalayan Vegetation Classification
- Classified based on altitude and rainfall.
- Includes tropical, subtropical, temperate, and alpine zones.
- Zones reflect vegetation types at different altitudes and climatic conditions.
- Local variations in relief, sunlight exposure, and winds affect vegetation composition.
Tropical Evergreen Montane Rain Forests
- Located in humid foothills of eastern and central Himalayas.
- Rainfall is abundant, transitioning into tropical deciduous forests with Sal tree dominating.