CBSE – 10th Standard Science

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Class 10 Chapter 16 – Management of Natural Resources

Management of Natural Resources

  • There are international laws and regulations, and then there are our own national laws and acts for environmental protection.
  • Coliform is a group of bacteria, found in human intestines, whose presence in water indicates contamination by disease-causing microorganisms.
  • The Ganga runs its course of over 2500 km from Gangotri in the Himalayas to Ganga Sagar in the Bay of Bengal.
  • Ganga is being turned into a drain by more than a hundred towns and cities in Uttar Pradesh, Bihar and West Bengal that pour their garbage and excreta into it.
  • The pH of water is something that can easily be checked using universal indicator.
  • Reduce: This means that you use less.
  • Recycle: This means that you collect plastic, paper, glass and metal items and recycle these materials to make required things.
  • In the ‘reuse’ strategy, you simply use things again and again.
  • MANAGEMENT OF RESOURCES

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  • Economic development is linked to environmental conservation.
  • The management of natural resources requires a long-term perspective so that these will last for the generations to come and will not merely be exploited to the hilt for short term gains.
  • Mining causes pollution because of the large amount of slag which is discarded for every tonne of metal extracted.
  • Sustainable natural resource management demands that we plan for the safe disposal of these wastes too.

FORESTS AND WILD LIFE

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  • Forests are ‘biodiversity hot spots’.
  • One of the main aims of conservation is to try and preserve the biodiversity we have
  • Experiments and field studies suggest that a loss of diversity may lead to a loss of ecological stability.
  • The people who live in or around forests are dependent on forest produce for various aspects of their life.
  • Bamboo is used to make slats for huts, and baskets for collecting and storing food materials.
  • The Government of India has recently 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 in Khejrali village near Jodhpur in Rajasthan.
  • The Chipko Andolan Hug the Trees Movement’) was the result of a grassroot level effort to end the alienation of people from their forests.
  • In 1972, the West Bengal Forest Department recognized its failures in reviving the degraded Sal forests in the southwestern districts of the state.

Sustainable Management

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  • The harnessing of water resources by building dams has social, economic and environmental implications. Alternatives to large dams exist. These are locale-specific and may be developed so as to give local people control over their local resources.
  • Watershed management emphasises scientific soil and water conservation in order to increase the biomass production.
  • Watershed management not only increases the production and income of the watershed community, but also mitigates droughts and floods and increases the life of the downstream dam and reservoirs.
  • The advantages of water stored in the ground are many. It does not evaporate, but spreads out to recharge wells and provides moisture for vegetation over a wide area.
  • Fossil fuels, that is, coal and petroleum, which are important sources of energy for us.

Course Curriculum