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Give reasons, why the type and thickness of vegetation changes from place to place. | Class 7 NCERT - Our Environment ( GEOGRAPHY), SOCIAL SCIENCE


Give reasons, why the type and thickness of vegetation changes from place to place.

( Chapter 6: Natural Vegetation and Wildlife, Class 7- Our Environment ( GEOGRAPHY), SOCIAL SCIENCE)


The type and thickness of vegetation change from place to place due to a complex interplay of various environmental factors mainly variations of temperature and moisture. 

The following are the primary reasons for the variation of type and thickness of vegetation from place to place:


Climate is a fundamental factor influencing vegetation patterns. Temperature, moisture ( precipitation), and sunlight levels vary across regions, determining which plant species can thrive. For example, tropical rainforests have thick vegetation due to high temperatures and abundant rainfall, while deserts have sparse vegetation due to extreme aridity [ or low moisture].

Water Availability: 

The presence of rivers, lakes, and groundwater significantly impacts vegetation. Areas with a consistent water source can support lush vegetation, while regions with limited water sources may have sparse or drought-resistant plants.

Soil Quality: 

Soil composition, nutrient content, pH levels, and drainage capacity vary widely. Different plant species have specific soil requirements, so the type of soil in an area affects the vegetation that can grow there.


The physical features of the land, such as elevation, slope, and aspect, influence local climates and water availability. Mountains, valleys, and slopes create microclimates that affect vegetation distribution.

Natural disaster: 

Natural disasters like wildfires, floods, and volcanic eruptions can disrupt vegetation patterns. Some plants are adapted to thrive after disaster while others struggle to recover. As a result, it creates variation.

Human Activities: 

Human activities, such as agriculture, deforestation, urbanization, and land use changes, can alter vegetation patterns. Clearing land for farming or urban development leads to the loss of native vegetation.

Geographic Location: 

Latitude plays a role in determining the length and intensity of seasons, which affects the types of plants that grow. High-latitude areas have distinct seasons and have deciduous trees, while low-latitude areas near the equator have evergreen forests.

The combination of these factors creates a variation in vegetation types and thicknesses across the globe, resulting in diverse ecosystems that vary from one place to another. This diversity is a testament to the complexity and adaptability of life on Earth.

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