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Food Resources

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Producing Food by Green-Revolution Techniques. High-input monoculture ... or carp) 2. Fig. 13-25 p. 298. Catching and Raising More Fish. Fisheries ... – PowerPoint PPT presentation

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Title: Food Resources


1
Food Resources
G. Tyler Millers Living in the Environment 13th
Edition Chapter 13
Dr. Richard Clements Chattanooga State Technical
Community College
2
Key Concepts
  • Methods of producing food
  • Increasing food production
  • Environmental effects of food production
  • Increasing sustainability

3
How Is Food Produced?
  • Sources of food
  • Primary plantswheat, corn, and rice
  • Primary animalsbeef, pork, and chicken

4
Major Types of Agriculture
  • Traditional subsistence
  • Traditional intensive
  • Plantation
  • Industrialized (high-input)

See Fig. 13-3 p. 280
5
World Food Production
Fig. 13-2 p. 279
6
Producing Food by Green-Revolution Techniques
  • High-input monoculture
  • Selectively bred or genetically-engineered crops
  • High inputs of fertilizer
  • Extensive use of pesticides
  • High inputs of water
  • Increased intensity and frequency of cropping

7
Green Revolutions
Fig. 13-6 p. 282
8
Producing Food by Traditional Techniques
  • Intercropping
  • Polyvarietal cultivation
  • Intercropping
  • Agroforestry (alley cropping)
  • Polyculture

9
Food Production
  • Rapidly increasing
  • Prices decreasing
  • Shortages in developing countries
  • Approaching limits on meat production

10
Nutrition
  • Undernutrition
  • Malnutrition
  • Overnutrition

Refer to Fig. 13-11 p. 286
Refer to Solutions p. 289
11
Environmental Effects of Food Production
  • Biodiversity loss
  • Soil
  • Air pollution

See Fig. 13-13 p. 288
  • Water
  • Human health

12
Increasing World Crop Production
  • Crossbreeding and artificial selection
  • Genetic engineering (gene splicing)
  • Genetically modified organisms (GMOs)
  • Continued Green Revolution techniques
  • Introducing new foods
  • Working more land

See Fig. 13-16 p. 291
13
Producing More Meat
  • Rangeland
  • Pasture
  • Efficiency

Fig. 13-25 p. 298
  • Adaptations of rangeland plants
  • Range condition and management
  • Environmental consequences (Connections p. 299)

14
Catching and Raising More Fish
  • Fisheries
  • Fishing methods (See Fig. 13-30 p. 303)
  • Sustainable yield
  • Overfishing
  • Commercial extinction
  • Aquiculture
  • Fish farming and ranching

15
Government Agricultural Policy
  • Artificially low prices
  • Subsidies
  • Elimination of price controls
  • Food aid

16
Solutions Sustainable Agriculture
  • Low-input agriculture
  • Organic farming

See Fig. 13-36 p. 308
  • More benefits to the poor
  • Increasing funding for research in sustainable
    techniques
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