Biology project.docx 111111 converted
- 1. CHAPTER-6 MANAGEMENT OF NATURAL RESOURCES 1) Natural resources : Natural resources are the resources available in a nature like air, water, sunlight, soil, minerals, forests, wild life etc. Natural resources are of two main types. They are renewable and non-renewable natural resources. i) Renewable natural resources : Those resources which can be replenished in a short period of time like air, water, sunlight, forests etc. ii) Non-renewable natural resources : Those resources which cannot be replenished in a short period of time like minerals (coal, petroleum, natural gas, metals etc.) because they take millions of years to be formed.
- 2. Human activities produce a lot of waste materials which are thrown away into the environment. These wastes cause pollution of natural resources like air, water and soil. GANGA ACTION PLAN The Ganga Action Plan or GAP was a program launched by Rajiv Gandhi in 1986 in order to reduce the pollution load on the river. Human waste- domestic usage like bathing, laundry and public defecation Industrial waste-dumping untreated waste into it. Religious events -During festival seasons, people bathe in the Ganges to cleanse themselves from their sins.. A Hindu belief is that dropping the ashes of cremated bodies (at Varanasi) in the Ganges would give Moksha (liberation) to the jiva
- 3. 2) The Three R's to save the environment : The three R's to save the environment are Reduce, Recycle and Reuse. i) Reduce :- means using less of natural resources and avoiding wastage of natural resources. ii) Recycle :- means the materials like paper, plastic, glass, metals etc used for making things can again be used for making new things instead of synthesising or extracting new paper, plastic, glass or
- 4. metals. iii) Reuse:- means using things again and again like the plastic bottles in which we buy jams, pickles etc can be again used for storing things in the kitchen. 3) Need for management of natural resources : All the things we use and consume are obtained from natural resources. Due to increase in population, industrialisation and urbanisation the demand for natural resources is increasing and their availability is limited. So there is a need for proper management of natural resources. The proper management of natural resources consists of : i) Judicious use of natural resources and avoiding wastage of natural resources. II) Long term planning for the use of natural resources so that it last not only for the present but also for future generations. iii) The exploitation of natural resources should not be for the benefit of a few people but should be distributed equally for all.
- 5. iv) While extracting and using natural resources we should also plan for the safe disposal of wastes and avoid pollution so that no damage is caused to the environment. 4) Forests : a) Importance of forests : i) Forests help to preserve biodiversity. il) Forests are natural habitats of plants and animals. iii) Forests provide timber, wood, fuel, medicines, fodder, etc. iv) Forests help to maintain ecological balance. v) Forests help to control climate and rainfall. vi) Forests help to prevent soil erosion and controls floods. vii) Forests help to maintain the oxygen-carbon dioxide balance in nature.
- 6. Forests are biodiversity hot spots Biodiversity measure by - Number of species found there. range of different life forms present. Conservation means- preserve the biodiversity we have inherited Loss of diversity may lead to loss of ecological stability. b) Stake holders of forests People who are associated with forests directly or indirectly are: i) People living in and around forests depend on forests for their livelihood. ii) Industrialists who use the raw materials from forests for manufacturing paper, medicines, furniture etc. iii) Forest Department of the Government who owns the forests and controls the resources from the forests.
- 7. iv) Nature and wild life organisations who want to conserve and preserve forests. c) Conservation of forests : Forests can be conserved by : i) Afforestation - planting of more trees. ii) Preventing or reducing deforestation. iii) Preventing over grazing by cattle. iv) By setting up wildlife sanctuaries, national parks, biosphere reserves etc. v) Undertaking social forestry programs like Van Mahotsav, Chipko movement for planting and protecting trees on a large scale.
- 8. 5) Wildlife : a) Importance of wildlife : 1) Wildlife helps to preserve biodiversity. H) Wildlife helps to maintain food chains and food web. ili) We get useful products from wildlife like food, medicines, leather, bones, honey, lac etc. b) Conservation of wildlife : i) Preserving the natural habitats of animals. ii) Banning poaching of animals. ili) Protecting endangered species of animals. iv) Setting up of wildlife sanctuaries, national parks, biosphere reserves etc.
- 9. Local people work traditionally for conserving the forest In 1731 Amrita Devi, a Bishnoi woman who, along with more than 363 other Bishnois, died for the protection of Khejari trees near Jodhpur in Rajastan. 'Amrita Devi Bishnoi National Award for Wild life Conservation' by Indian Government Prejudice against the traditional use of forest area has no basis. Himalayan National Park incident -alpine meadows grazed by sheep in summer. -This practice was put to an end when national park was formed.
- 10. -grass grows very tall and falls over preventing fresh growth. People's participation in the management of forests. Far-seeing forest officer, A.K. Banerjee in the Arabari forest range of Midnapore district Mr.Banerjeee involved the villagers in the protection of 1,272 hectares of badly degraded Sal forest. In return for help in protection, villagers were allowed fuel
- 11. wood and fodder collection on payment of a nominal fee and given employment in both silviculture and harvesting operations, 25 per cent of the final harvest was given to the village community. The result was the active and willing participation of the local community. The Sal forests of Arabari underwent a remarkable recovery by 1983; a previously worthless forest was valued Rs. 12.5 crores.