Students must go through these JAC Class 10 Science Notes Chapter 16 Management of Natural Resources to get a clear insight into all the important concepts.
JAC Board Class 10 Science Notes Chapter 16 Management of Natural Resources
→ Natural resources : The naturally occurring resources which are used by human beings for various purposes are called natural resources. Soil, water, air, forests, wildlife, coal, petroleum, etc. are the examples of natural resources.
→ In 1985, Ganga Action Plan was started for cleaning and maintaining the quality of water in the river Ganga.
The presence of faecal coliform bacteria in water indicates contamination by disease causing microorganisms.
→ There are some measurable factors which are used to quantify pollution or the quality of water.
The pH of water can be easily checked using universal indicator. Water with a pH level between 6.5-8.5 is safe for drinking.
→ Conservation is controlled utilization of natural resources for the benefit of all life forms.
→ The five R’s to save the environment are:
- Refuse : It means not to buy product that can harm the environment.
- Reduce : It means use less and save natural resources.
- Reuse : It means use things again and again instead of throwing away.
- Repurpose : It means a product can be used for other purpose, when it is no more useful for its primary and main purpose.
→ Recycle : It means the processing of things that are considered waste and turning them into useful products.
→ The concept of sustainable development encourages eco-friendly approach that meets current basic human needs. Economic development is linked to environmental conservation.
→ The natural resources need to be managed due to following reasons :
- They should last for future generation
- They should be equally distributed
- The resource are used in such a way that the environment should not be harmed.
→ Forests are important renewable natural resources. A wide range of different life forms are found there. They are biodiversity hot spots.
→ The different stakeholders in a forest are :
- People who live in or around forests
- The Forest Department of the Government
- The industrialists
- The wildlife and nature enthusiasts.
→ The Government of India has instituted an ‘Amrita Devi Bishnoi National Award for Wildlife Conservation’, in the memory of Amrita Devi Bishnoi. who in 1731 sacrificed her life along with 363 others for the protection of ‘Khejri’ trees.
→ Chipko Andolan (‘Hug the Trees Movement’) was started in early 1970 from Reni village, in Garhwal.
Chipko Andolan was the result of a grass root level effort to end the alienation of people from forests.
→ Sal forests in the Arabari forest range of Midnapore district of West Bengal were saved by the involvement of the local villagers.
→ Monoculture of pine, teak and eucalyptus in the forest area are an important source of revenue for the Forest Department, but such practise destroys biodiversity.
→ Water is a basic necessity for all terrestrial forms of life.
- Rain is a very important source of fresh water.
- Large dams can ensure the storage of adequate water mainly for irrigation and for generating electricity.
- Large dams cause social, economic and environmental problems.
→ Water harvesting means storing rainwater where it falls or storing run off water in a local areas. Dr Rajendra Singh won the Stockholm Water Prize in 2015. He is known as India’s ‘Waterman’.
→ Fossil fuels, i.e., coal and petroleum were formed from the degradation of biomass millions of years ago. Energy needs have been largely met by the reserves of coal and petroleum.
We would need to look for alternative sources of energy because coal and petroleum are exhaustible energy resources.