| Sıra | DOSYA ADI | Format | Bağlantı |
|---|---|---|---|
| 01. | Squar | ppt | Sunumu İndir |
Transkript
POPULATION GEOGRAPHYDistribution and TrendsAP HGSRMHSMr. Hensley
Malthus
1970’s: Malthus Triumphant• Club of Rome think-tank runs computer simulations on resource use and population growth• Majority of simulations predict economic collapse from overpopulation• This idea penetrates into the popular consciousness
Paleofuture: 2022
The Future That Never Was• Better fertilizers and growing methods (Green Revolution)• Genetically improved crops• Population growth rate decreases• Market mechanism to allocate resources
Population Trends
Population Cartogram
Population Distribution
4 Regional Concentrations1. East Asia: China, Japan and Korea – 20%2. South Asia: India and Pakistan – 20%3. Southeast Asia: Indonesia, Philippines and other islands – about 15%4. Europe: about 12%
Why these regions?• All are in the northern hemisphere – temperate climates with seasons• All regions are near the ocean or along major rivers – 80% live with 800 km of an ocean• Ecumene – the part of the Earth permanently occupied by humans (only 5%)
Where the People Aren’t: Deserts
Also Outside the Ecumene• Wetlands (usually near the equator)• Cold lands: near the poles and covered with permafrost• High lands: too mountainous (notable exceptions: the Incas in the Andes)• 95% of the land!
Arithmetic Density• Formula: take the total number of people and divide by the total land area (80 per sq. mile in US versus 900 for India)• Varies tremendously across regions – 68,000 person per sq. mile in NYC compared to 1 person per sq. mile in Texas Panhandle
Physiological density• Divide the number of people by the amount of arable land• Tells you roughly how many people each square mile of land needs to feed• 445 per square mile in US versus 7,000 (!) per square mile in Egypt
Agricultural density• Take the number of farmers and divide it into the amount of arable land• Measures farming efficiency and technology levels• US has a ratio of about 2 farmers per square mile compared to 2,000 per square mile in Egypt
Tuesday Feb. 7th• REVIEW: What are the THREE types of density measures for population?• TODAY: Gap Minder project!• TOMORROW: Begin Migration• TODAY: ARE on immigration (acceleration)
Clarifications• Take a screenshot of your graph and insert it into a Word doc• Write down your explanation in the Word doc• Share the Word doc with me at jhensley2@wcpss/net• Each group comes up with ONE graph working TOGETHER as a team• Take your TIME and explore the tool
