Chapter 14: Resource Issues The Cultural Landscape: An Introduction to Human Geography.
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Transcript of Chapter 14: Resource Issues The Cultural Landscape: An Introduction to Human Geography.
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Chapter 14: Resource Issues
The Cultural Landscape: An Introduction to Human Geography
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Introduction
• Resource: substances in environment substances that are useful to humans– Limited
• 2 resource misuses:– Deplete scarce resources for energy– Destroy resources by pollution
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Why Are Resources Being Depleted?
• Energy resources– Animate versus inanimate power– Energy supply & demand
• 5/6 of world energy comes from coal, natural gas, &oil
Figure 14-2
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Per Capita Energy ConsumptionFigure 14-1
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Why Are Resources Being Depleted?• Energy resources
– Finiteness of natural resources• Renewable versus nonrenewable resources
– Proven reserves• Total supply known
– Potential reserves• Undiscovered fields• Enhanced recovery
from known fields• Unconventional
sources
Figure 14-3
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Coal ProductionFigure 14-4
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Proven Reserves of Fossil Fuels Figure 14-5
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Why Are Resources Being Depleted?
• Energy resources– Uneven distribution of fossil fuels
• Location of reserves
– Consumption of fossil fuels
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Why Are Resources Being Depleted?• Energy resources
– Control of world petroleum• Sharp conflicts• OPEC (Organization of Petroleum Exporting
Countries)• Changing supply &
demand
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Why Are Resources Being Depleted?
• Mineral resources– Metallic or nonmetallic
• Nonmetallic = 90 % of extraction is for building stone
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Why Are Resources Being Depleted?
• Mineral resources– Metallic or nonmetallic
• Ferrous metallic minerals = iron ore, chromium, manganese
• Nonferrous metallic minerals = aluminum, copper, zinc
– Precious metals = gold, silver, platinum
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Why Are Resources Being Polluted?
• Air pollution– Global scale
• Global warming– Greenhouse effect– Ozone layer & CFCs Figure 14-15
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Why Are Resources Being Polluted?• Air pollution
– Regional scale• Acid precipitation & acid deposition
Figure 14-18
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Why Are Resources Being Polluted?
• Air pollution– Local scale
• Carbon monoxide • Hydrocarbons & photochemical smog• Particulates
Figure 14-19
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Why Are Resources Being Polluted?
• Water pollution– Nonpoint-source vs.
point-source pollution– Sources
• Agriculture• Water-using
industries• Municipal
uses
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Why Are Resources Being Polluted?• Water pollution
– Impact on aquatic life• Biochemical oxygen demand• Dead zone• Thermal
pollution
– Wastewater & disease
• U.S. Clean Water Act
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Why Are Resources Being Polluted?
• Land pollution– Solid-waste disposal
• Sanitary landfills– Expanded landfill capacities– 2 alternatives to landfills: incineration & recycling
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Why Are Resources Being Polluted?• Land pollution
– Hazardous waste disposal• 2007: about 47 million tons disposed of in U.S.• Heavy metals• Pollution,
cancer, death, etc.
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Why Are Resources Being Polluted?
• Renewing resources– Nuclear energy
• Potential accidents
• Radioactive wastes
• Bomb material
• Limited uranium reserves
• High cost
– Nuclear fusion
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Percentage of Electricity Generated from Nuclear Power
Figure 14-23
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Why Are Resources Being Reused?
• Renewing resources– Leading renewable
energy resources• Biomass• Hydroelectric
power• Wind power• Geothermal
energy
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Electricity From Hydroelectric PowerFigure 14-26
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Why Are Resources Being Reused?
• Renewing resources– Leading renewable energy
resources• Solar energy
– 1% of U.S. energy– Active
» Special devices collect solar energy & convert to power
– Passive» No special devices to
collect solar energy
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Why Are Resources Being Reused?
• Renewing resources– Leading renewable energy
resources• Renewable energy in motor
vehicles
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Why Are Resources Being Reused?
• Recycling resources– Recycling collection
• Pick-up & processing programs– Curbside
– Drop-off
– Buy-back
– Deposit
• Manufacturing of recycled products– Paper
– Plastic
– Glass
– Aluminum
Figure 14-30
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Why Are Resources Being Reused?• Recycling resources
– Other pollution reduction strategies
• Reduce discharges
• Increase environmental capacities
– Comparing pollution reduction strategies
• Consumers use/waste less for safer, cleaner environment
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Why Should Resources Be Conserved?
• Sustainable development– Improve quality of life while
preserving resources for future generations
– Conservation• Sustainable use &
management of resources
– Preservation• Maintenance of resources in
their present condition
– Impact on economic growth– Sustainability’s critics
Figure 14-33
Figure 14-34
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Why Should Resources be Conserved?• Biodiversity
– Geographic vs. biological biodiversity• Biologists: concerned with genetic diversity• Geographers: concerned with biogeographic diversity
– Biodiversity in the tropics• Occupy 6% of Earth’s land area but contain over 50% of all species
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The End.• Thank you for taking Intro to Human Geography with
me. I hope you enjoyed the class. Regardless of the specifics you take away from this class, remember geography & culture are all around you.