Depletion of Natural Resources: Causes and Effects
Explore the causes and impacts of depletion of natural resources due to overpopulation, overconsumption, and wastage. Learn how human activities are affecting the environment and resource sustainability in civil engineering practices.
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Program CIVIL ENGINEERING Program Code CE Course- ENVIRONMENTAL STUDIES Course Code 22447 08/07/2020 MSBTEs e-content 08/07/2020 MSBTE LEAD MSBTE LEAD- -STUDY AT YOUR DOORSTEP STUDY AT YOUR DOORSTEP Ms. Ms. Swati Swati Ingale Ingale Course Expert Course Expert Lecturer, NIT Polytechnic, Nagpur
Unit II: Energy Resources Topic: Importance Topic: Importance of Natural of Natural Resources Resources CO 2: Select alternative energy resources for Engineering Practices UO 2c: State the causes and effects of depletion of resources. UO 2f: State the impacts of over use of natural resources. 08/07/2020 08/07/2020 Written by Mr. Mr. N. U. N. U. Sulbhewar Sulbhewar Course Expert Course Expert Lecturer, Government Polytechnic, Gadchiroli Ms. Ms. Swati Swati Ingale Course Expert Course Expert Lecturer, NIT Polytechnic, Nagpur Ingale Dr. Dr. N.S.Raman N.S.Raman Course Expert Course Expert Deputy Director, NEERI, Nagpur
What we will What we will learn today? learn today? Concept Map Concept Map Learning Objective/ Learning Objective/ Key takeaways Know the Causes and effects of depletion of resources Understand impacts of over use of natural resources on environment. Key takeaways: : Natural Resources Exploitation or Overuse Contents: Contents: 2.3 2.3 Causes Causes and effects of depletion of and effects of depletion of resources 2.7 2.7 Overuse of natural resources and its impacts Overuse of natural resources and its impacts on environment on environment resources Depletion Impacts on Environment Page 3 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
Depletion of Depletion of Natural Resource Natural Resource Resource Depletion occurs when the renewable and non-renewable natural resources become scarce because they are consumed faster than they can recover. Overpopulation Over Pollution Consumption All of these resources have been depleted primarily because of human activities. Depletion of Natural Resources Industrial Development wastage Mining Activities Deforestation Page 4 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
Causes of depletion Causes of depletion of Natural Resource of Natural Resource 1. Overpopulation: Population growth is driving all of our resource problems, including water, agricultural land and energy, The Earth can only produce a limited amount of water and food, which is falling short of the current needs. 2. Overconsumption: This is the excessive and unnecessary use of resources. Natural resources in many regions are owned by private companies but they misuse it for getting more profit. 3. Wastage: Without paying much attention, we use a lot of electric energy each day from charging electronics to watching TV Similarly Water is also wasted in various domestic and industrial works. Page 5 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
Causes of depletion of Natural Causes of depletion of Natural Resources Resources 4. Deforestation: Natural calamities like hurricanes, forest fires, parasites and floods destroys the Forests Human activities as agricultural expansion, cattle breeding, timber extraction, mining, oil extraction, dam construction and infrastructure development. 5. Mining of Minerals and Oil. The increased exploitation of different minerals has led to some of them entering into a production decline. For example, minerals such as Gasoline, Copper, and Zinc production are estimated to decline in the next 20 years. Page 6 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
Causes of depletion of Natural Resources Causes of depletion of Natural Resources 6. Technological and Industrial Development: Industrial and technological advancements have also driven the demand for virgin materials for research, development, and production. More resources are hence being used to satisfy the industrial demands, increasing the rate of natural resource depletion. 7. Pollution and Contamination of resources: The poor quality of wastewater effluents is responsible for the degradation of the receiving surface water body. It is harmful for the aquatic ecosystem. The wrong Agricultural practices contaminates the land resources and make it unsuitable for crop production Page 7 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
Effects of Effects of depletion of Natural Resource depletion of Natural Resource Water shortage Forest depletion Oil depletion Food depletion Mineral depletion Natural gas depletion Page 8 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
Overuse of Natural Resources Overuse of Natural Resources We derive numerous useful substances from natural resources but when 'need' 'need' turns to 'greed' over exploitation over exploitation. 'greed' it starts impacts of impacts of Overuse of Natural Resources Overuse of Natural Resourceson environment environment 1. Deforestation. 2. Desertification 3. Soil erosion 4. Land Slides 5. Extinction of species on Page 9 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
1. 1. Deforestation Deforestation Deforestation is the clearance of forests by logging and/or burning. Trees absorb greenhouse gases and carbon dioxide and produce the oxygen we breathe. Forests are the habitats of millions of species. Causes of Deforestation 1. Construction of Roads 2. Mining 3. Hydroelectric projects 4. Forest fires Effects of Deforestation The loss of trees and other vegetation can cause climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere. Causes of Deforestation Effects of Deforestation Page 10 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
2. 2. Desertification Desertification Desertification is a process by which fertile land becomes desert. Causes for the origin of manmade for the origin of manmade deserts 1. Removal of trees . 2. Modern methods of agriculture instead of more traditional. 3. Over exploitation of fertile soil particularly in areas of low rainfall by cultivating cash crops. Effects of Desertification Effects of Desertification It It reduces the ability of land to support life, affecting wild species, domestic animals, agricultural crops and people. The reduction in plant cover results in Drought leads to accelerated soil erosion by wind. Causes deserts Page 11 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
3. Soil erosion 3. Soil erosion It is the washing or blowing away of the top layer of the soil. Manmade Causes of soil erosion Manmade Causes of soil erosion overgrazing by cattle, cutting down of trees, agricultural activities, construction of buildings and laying of roads. Effects of soil erosion Effects of soil erosion 1. It washes away the nutrients in soil resulting in infertility of the soil. 2. It has led to increased pollution and sedimentation in streams and rivers, clogging these waterways 3. Degraded lands are also often less able to hold onto water, which can worsen flooding. Flood Page 12 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
4. Land Slides 4. Land Slides It is the movement of rock, earth, or debris down a sloped section of land. Natural Causes Natural Causes of Rain, Cyclones, Earthquakes, Volcanoes of Landslides Landslides Manmade Manmade Causes of Landslides Causes of Landslides Unsafe Mining Activities, construction of dams Effects Effects of Landslides of Landslides The cost to repair structures, loss of property value, disruption of transportation routes, medical costs in the event of injury, loss of timber, Water availability. Page 13 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
5 5. . Extinction of species Extinction of species Extinction occurs when species are diminished because of environmental forces Causes of Causes of Extinction of habitat fragmentation natural disaster decline in population numbers due to poor reproduction overexploitation of species for human use Extinction of species species 1. 2. Tasmanian Tiger Formosan Clouded Leopard 3. 4. Effects of Effects of Extinction of extinction extinction can also impact can cause dramatic ecosystem and food web changes. Extinction of species impactpopulations of prey, which species passenger Pigeon Pyrenean Ibex. Page 14 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
Solutions for Conserving Natural Solutions for Conserving Natural Resources Resources Controlling deforestation Reducing oil, mineral consumption More exploration and use of Renewable source of energy like biogas, biofuels etc Protecting wetlands and coastal ecosystem Awareness creation Treatment of industrial wastes and sewages before release in the water bodies. Rain water harvesting. Ensure the recycling of wastes. Sustainable farming practices like crop rotation. Constructions of reservoirs Page 15 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
Refferences Refferences: : Prof. Erach Bharucha, 2004. Textbook for Environmental Studies. University Grants Commission, New Delhi, India. Dr. Y. K. Singh, 2006. Environmental Science. NEW AGE INTERNATIONAL (P) LIMITED, PUBLISHERS, New Delhi, India. Dr. J. P. Sharma, 2009. Environmental Studies, 2nd Edition, Laxmi publications, New Delhi, India. M.P. Singh, 2005, Environment and Natural Resources Hardcover, Satish Serial Publishing House, Delhi India. R. Rajgopalan, 2011. Environmental Studies: From crisis to cure, Oxford University Press, New Delhi, India. 1. 2. 3. 4. 5. Page 16 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
Natural Resources are Very Important Natural Resources are Very Important Say Yes To Conservation Say No to Exploitation The knowledge of importance of Natural resources is very essential to understand the its applications, Global need, and future demands Once you understand the importance of natural resources, you will understand the need of its conservation Page 17 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
Summary Summary We have studied We have studied : : Causes and effects of depletion of and effects of depletion of resources resources Overuse of natural resources and its of natural resources and its impacts on environment impacts on environment Causes Overuse Page 18 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
THANK YOU ALL Section divider over two lines or three lines HAVE A NICE DAY Now let s have a Quiz Now let s have a Quiz..... ..... Page 19 Maharashtra State Board of Technical Education Maharashtra State Board of Technical Education 4 April 2025
