NOTES Geography Chapter 5 (Class 9, CBSE, NCERT): "Natural Vegetation and Wildlife".

 

summary for Geography Chapter 5 (Class 9, CBSE, NCERT): "Natural Vegetation and Wildlife".

Chapter 5: Natural Vegetation and Wildlife

India's natural vegetation and wildlife are very diverse due to its varied climate, topography, and rainfall patterns. The country is home to a wide variety of plant and animal species, many of which are endemic, meaning they are found nowhere else in the world. The chapter explains the different types of vegetation, the factors influencing the distribution of plants, and the importance of conserving wildlife.

1. Factors Affecting Natural Vegetation in India

The types of vegetation found in different parts of India are influenced by several factors:

1.1 Climate

  • Temperature and precipitation are the two most significant climatic factors that determine the type of vegetation in an area. For example:
    • Tropical Rainforests: Found in areas with high rainfall and high temperatures like the Western Ghats.
    • Desert Vegetation: Found in dry areas with low rainfall, like Rajasthan and the Thar Desert.

1.2 Soil Type

  • The type of soil also plays a role in vegetation. For example:
    • Alluvial soils (found in the Ganga-Brahmaputra plains) are fertile and support the growth of tropical forests and agriculture.
    • Arid soils (found in deserts) are less fertile and support scrub vegetation.

1.3 Relief

  • Altitude affects vegetation. As the altitude increases, the type of vegetation changes, from tropical forests at lower altitudes to alpine vegetation in the higher Himalayan regions.

1.4 Biotic Interactions

  • Interaction between plants and animals also affects the type and growth of vegetation in an area. For example, grazing by animals can prevent certain types of vegetation from growing.

2. Types of Vegetation in India

India has a wide range of vegetation due to its vast geographical area and varying climate. The main types of vegetation are:

2.1 Tropical Evergreen Forests

  • Location: Found in areas with high temperature and rainfall, especially in the Western Ghats, Northeastern India, and parts of the Andaman and Nicobar Islands.
  • Characteristics:
    • These forests remain green throughout the year.
    • Trees grow close together and the canopy is dense, blocking sunlight from reaching the ground.
    • The forest is rich in biodiversity and includes teak, rosewood, ebony, mahogany, and rubber trees.
  • Wildlife: Tigers, elephants, monkeys, and various species of birds and insects.

2.2 Tropical Deciduous Forests

  • Location: Found in areas with moderate rainfall, like parts of Madhya Pradesh, Uttar Pradesh, Bihar, Orissa, and Chhattisgarh.
  • Characteristics:
    • Trees shed their leaves in the dry season to conserve water.
    • They are also called monsoon forests because they grow in areas with a distinct wet and dry season.
    • Trees include sal, teak, sandalwood, and mango.
  • Wildlife: Lions, tigers, deer, and several species of birds and reptiles.

2.3 Thorn Forests and Scrubs

  • Location: Found in dry regions with low rainfall, like Rajasthan, Gujarat, Western Madhya Pradesh, and parts of Deccan Plateau.
  • Characteristics:
    • These forests are made up of drought-resistant, thorny bushes, and cacti.
    • Vegetation is sparse due to the low rainfall.
    • The soil is typically sandy and arid.
  • Wildlife: Camels, foxes, jackals, and various reptiles.

2.4 Montane Forests

  • Location: Found in the Himalayan region, at higher altitudes.
  • Characteristics:
    • As altitude increases, the type of forest changes from tropical to temperate to alpine vegetation.
    • At lower altitudes, broadleaf trees like oak and chestnut are found.
    • As you move higher, coniferous trees like pine, deodar, and fir dominate the landscape.
  • Wildlife: Himalayan brown bear, snow leopard, red panda, and various bird species.

2.5 Alpine Vegetation

  • Location: Found at the highest altitudes of the Himalayas and other mountain ranges.
  • Characteristics:
    • The vegetation consists of mosses, lichens, and short grasses due to the cold climate and snowfall.
  • Wildlife: Himalayan tahr, blue sheep, and snow leopards.

3. Wildlife of India

India is home to a rich and diverse variety of wildlife, which includes several species that are unique to the country. The following are some of the important aspects of India’s wildlife:

3.1 Fauna

  • India’s diverse climates support a wide range of wildlife species, including mammals, reptiles, amphibians, birds, and insects.
  • Some iconic species of wildlife include:
    • Royal Bengal Tiger: Found in Sundarbans and Kaziranga National Park.
    • Indian Elephant: Found in Assam, Kerala, and Uttarakhand.
    • Indian Rhinoceros: Found in the Kaziranga National Park.
    • One-Horned Rhinoceros: Found in Assam.
    • Snow Leopard: Found in the high altitudes of Himalayas.
    • Peacock: The national bird of India, found in many parts of the country.

3.2 Conservation of Wildlife

  • India is home to several national parks and wildlife sanctuaries that protect the country’s flora and fauna. Some of the major ones include:
    • Jim Corbett National Park (Uttarakhand) – Known for its tiger reserve.
    • Kaziranga National Park (Assam) – Famous for the one-horned rhinoceros.
    • Sundarbans National Park (West Bengal) – Known for the Bengal tiger.
    • Gir National Park (Gujarat) – The only home to the Asiatic lions.
  • Conservation efforts: India has implemented various conservation programs to protect its endangered species, such as Project Tiger, Project Elephant, and Marine Turtle Conservation.

4. Importance of Conservation

  • Biodiversity: India has rich biodiversity, and conserving its flora and fauna is crucial for maintaining ecological balance.
  • Economic Value: Wildlife tourism is a significant source of income for the country, with national parks and wildlife sanctuaries attracting thousands of tourists.
  • Ecological Role: Every species plays a vital role in maintaining the health of ecosystems. For example, predators control the population of herbivores, preventing overgrazing of vegetation.

5. Threats to Natural Vegetation and Wildlife

Several factors threaten the natural vegetation and wildlife in India:

  • Deforestation: The cutting down of forests for agricultural land, urbanization, and logging.
  • Hunting: Poaching and illegal hunting for wildlife trade.
  • Climate Change: Global warming and changes in rainfall patterns affect the habitats of many species.
  • Pollution: Air, water, and soil pollution degrade natural habitats.

Key Points to Remember

  1. Factors Affecting Vegetation: Climate, soil, relief, and biotic interactions.
  2. Types of Vegetation: Tropical Evergreen Forests, Tropical Deciduous Forests, Thorn Forests, Montane Forests, and Alpine Vegetation.
  3. Wildlife: India is home to unique species like the Bengal tiger, Indian elephant, and snow leopard.
  4. Conservation: India has several national parks and sanctuaries for wildlife conservation, such as Jim Corbett and Kaziranga.
  5. Threats: Deforestation, poaching, climate change, and pollution pose significant threats to vegetation and wildlife.

Comments

Post a Comment

Popular posts from this blog

NOTES Chapter 15: Our Environment Class 10 Science – CBSE NCERT

  Chapter 15: Our Environment Class 10 Science – CBSE NCERT Chapter 15 focuses on the various components that make up our environment, including ecosystems , biotic and abiotic factors , and food chains and webs . It highlights the balance of nature , biodiversity , and environmental issues like pollution, deforestation, and the need for sustainable development. The chapter also explains the impact of human activities on the environment and emphasizes the importance of conserving natural resources for future generations. 1. The Environment and Its Components The environment is the surrounding in which organisms live. It includes both living and non-living things and can be broadly classified into two categories: 1.1 Biotic Components : These are the living organisms in the environment. They include: Plants (producers), Animals (consumers), Microorganisms (decomposers). 1.2 Abiotic Components : These are the non-living factors that affect the living organisms in th...
Read more

NOTES Chapter 12: "Sound" from Class 9 Science CBSE NCERT:

  summary of Chapter 12: "Sound" from Class 9 Science CBSE NCERT : 1. What is Sound? Sound is a form of energy that is produced by the vibration of objects and propagates through a medium (solid, liquid, or gas) in the form of waves. Sound travels in waves and can be heard when it reaches our ears . How is sound produced? Sound is produced when an object vibrates. These vibrations cause the particles of the medium to move, creating compressions and rarefactions (regions of high and low pressure) that travel through the medium. 2. Propagation of Sound Sound needs a medium (like air, water, or solid objects) to travel. It cannot travel in a vacuum. How sound waves travel : Sound waves are longitudinal waves (particles of the medium move in the same direction as the wave). When an object vibrates, it creates a series of compressions (regions where particles are close together) and rarefactions (regions where particles are spread apart) in the surrounding medium. These co...
Read more

Moments Chapter 3 of CBSE Class 9, titled "Iswaran the Storyteller" by R.K. Narayan:

  summary of Chapter 3 of Moments for CBSE Class 9, titled "Iswaran the Storyteller" by R.K. Narayan : Summary: In this chapter, the story is centered around Iswaran , a cook who works for the narrator, and his fascinating way of telling stories. Iswaran's storytelling skills and his adventurous nature provide both entertainment and a sense of mystery to the narrator, who works in a small town. The narrator begins by describing Iswaran as an enthusiastic and talented cook who makes delicious food and is always happy to serve. Iswaran is very devoted to his job and never seems to get tired, no matter how much work is piled up. He is also well known for his remarkable storytelling abilities. He often entertains the narrator with thrilling stories, which he describes in vivid detail. The Background of Iswaran’s Life: Iswaran is originally from a village, and he later moves to the town where he works for the narrator. He is described as a "man of strong character...
Read more