Chapter 4 continued Nonrenewable Mineral Resources Energy Energy Options Environmental Degradation...
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Transcript of Chapter 4 continued Nonrenewable Mineral Resources Energy Energy Options Environmental Degradation...
Chapter 4 continued
• Nonrenewable Mineral Resources
• Energy
• Energy Options
• Environmental Degradation
• Environmental Equity and Sustainable Development
Nonrenewable Natural Resources• The widespread distribution of nonmetallic
elements (e.g. sand & gravel, nitrogen, potash, phosphorous, sulfur, etc.)
• Uneven distribution of metallic minerals• Figure 4.12 – diversity of strategic minerals in
U.S. Canada, Australia, South Africa and Russia• Growing U.S. dependent on imports• Mineral supply options: the oceans, improved
mining technologies, recycling• Figure 4.13: “transmaterialization” – substitution
of advanced materials for natural materials• Environmental Impacts – use of lower quality
ores
Production of Strategic Materials
Changing Consumption of Metals
U.S. Energy Consumption
With about 5% of global population, the U.S. uses about 25% of global energy consumption
Total andPer CapitaEnergyConsumption
Global Petroleum ReservesAlaska?
Petroleum ReservesAnd Production
% differentThan Fig.4.18
U.S. Oil Statistics Figure 4.16 – textData are very differentThan the scale onThis graph – see the nextSlide for more accurate data
Source: U.S. Energy Administration. Tight Oil is shale oil production
Oil Production & Consumption U.S.
Growing foreign dependence
Rise of OPEC
Global imbalance in energydemand and supply
Pressures to increasedomestic output – Alaska,Offshore
Future demands and supplies:when will global output peak,and what will be the alternative?
Crude Oil Reserves, Production & Trade
Production & Consumption Crude Oil by Major Region
Natural GasReserves andProduction
World Trade in Natural Gas
Coal ProductionAnd Reserves
Major Iron-Producing & Coal Fields
Acid Rain Creation
Energy Options – Post Cheap Fossil Fuels
• Conservation
• Nuclear Power – Figure 4.29
• Geothermal
• Hydropower
• Solar Energy
• Wind – note case study
• Biomass
Source: NWPCC 6th Northwest Power Plan, Chapter 2
An Example of Renewable Energy Options -RPS – Renewable Resource Portfolio Standard
Environmental Degradation
• Pollution – air and water
• Wildlife & habitat preservation
• Environmental Equity
Causes ofDecrease
Sources of Air Pollutants
Point vs. Non-point sources
Acid Rain Concentration
Greenhouse Gases & Global Warming
Environmental Equity and Sustainable Development
• Environmental spillovers of human development
• Principle of sustainable development– Western concerns with long-run growth and
efficiency, externalizing environmental costs– A critique from the Global South – equity and
internalizing environmental costs– P. 127 last paragraph before summary
Problems ofAir pollution,Acid Rain, And AquiferDepletion
2010 Gulf Oil Spill
Problems of poverty,Poor land distribution,Lack of rural opportunities,Exploitation of environment by corporate interests,Threatening forests,Polluting water, Creating Urban Air Quality Problems
ProblemsOf deforestation,Desertification,Overgrazing,Soil erosion,Wildlife extinction
Water supply problems,Overgrazing,Irrigation-induced salinization
Marine pollution,Acid rain,Polluted rivers
Summary• Resource problems can be solved by• (1) changing societal goals• (2) changing consumption patterns• (3) changing technology• (4) altering population levelsViewing the “food crisis” as socially
constructedNonrenewable resources – shifting from a
growth-oriented to a balance-oriented lifestyle