1. Introduction to Population
OBJECTIVE:
STUDENTS WILL ANALYZE MAJOR POPULATION STATISTICS IN ORDER TO PREDICT THE ABILITY OF THE FIVE MAJOR POPULATION CONCENTRATIONS TO SUSTAIN THOSE NUMBERS FOR YEARS TO COME.

2. World Population Distribution & Climate Zones
Fig. 2-2: World population is unevenly distributed across the earth’s surface. Climate is one factor that affects population density.

3. World Population Density

4. Climate Zones (simplified)

5. Ecumene the portion of the earth with permanent human settlement
Using the provided maps, draw where the ecumene is located in modern times

6. Ecumene, 5000 B.C.

7. Ecumene, A.D. 1

8. Ecumene, A.D.1500

9. Ecumene, A.D.1900

10. How has the Ecumene Expanded?
Expansion of human habitation into historically sparsely populated regions
Dry Lands
Wet lands
Cold Lands
High Lands

11. Dry Land
20 percent of the Earth’s land surface are not suitable for farming
Northern Hemisphere – between 15 and 50 degree North Latitude
Southern Hemisphere – between 20 and 50 degree south latitude

12. Living in Dry Land Major Factors: construction of irrigation systems
Increasing demand for natural resources found in dry land areas (i.e. oil)
Technological advances in climate control

13. Arithmetic Population Density
Fig. 2-4: Arithmetic population density is the number of people per total land area. The highest densities are found in parts of Asia and Europe.

14. Arithmetic Density
The total amount of people divided by total land area
Also known as population density
What are the limitations of Arithmetic Density?

15. Physiological Density
Fig. 2-5: Physiological density is the number of people per arable land area. This is a good measure of the relation between population and agricultural resources in a society.

16. Physiological Density
Total number of people divided by the arable land of the country
The higher the physiological density the greater the pressure that people place on the land to produce food.
Where is it the hardest to get a meal?

17. Measures of Population Density

18. Distribution of World Population
Population concentrations
The five largest population clusters
South Asia
East Asia
Southeast Asia
Europe
North America