Class 7 Science – Importance of Forest – Our Lifeline
Free online notes for Class 7 Science – Forest – Our Lifeline. In this article, we will learn Importance of Forest, Why forest is called green lungs? Effects of deforestation.
• It is the large area of land thickly covered with plants, trees, bushes etc. It is a system that comprises of plants, animals, and micro-organism.
• The various component of the forest is interdependent on one another. In the forest, there is an interaction between soils, water, air, and living organism.
• Forest is a lifeline between forest-dwelling communities.
• Forest influences climate, water cycle, and air quality.
• It is full of life and vitality.
Why forest is called green lungs?
Forests are also known as green lungs as plants release oxygen through the process of photosynthesis. Plants help to provide oxygen for animal respiration. They also balance the oxygen and carbon dioxide in the atmosphere.
The trees are the uppermost layer of the forest followed by the shrubs, the herbs to the lowest layer of vegetation. The different layer of vegetation provides food and shelter for animals, birds, and insect.
Canopy is the uppermost layer of the trees in the forest forming the more or less continuous layer of foliage.
Importance of Forest
• It provides us with oxygen.
• It protects soil and provides habitat to a large number of animals.
• It helps in bringing good rainfall in neighboring areas.
• It provides timber.
• It purifies the air.
• It provides shelter.
• It controls flood.
• It is also a noise absorber.
Cutting down of trees is referred to deforestation.
Effects of deforestation
• It improves the amount of carbon dioxide in the air thereby increasing the effect of global warming.
• Animals will not get food and shelter.
• Soil will not hold water that will cause the flood.
• Endangers lives and environment.
Conservation of forest
- Protect wildlife.
- Do not allow overgrazing.
- It promotes afforestation.
- Controls forest fires.
The food chain shows the transfer of material and energy from one species to another within an ecosystem.
Organisms are grouped into trophic levels. Trophic levels are various steps in the food chain at which the transfer of food takes place.
It consists of many interconnected food chains.
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Tag: Class 7 Science, Importance of Forest, Our Lifeline, Deforestation, Why forest is called green lungs?