Population GeographyDistribution of World PopulationPopulation StatisticsPopulation PyramidsDemographic Transition TheoryOverpopulation (Malthus and Neo-MalthusiansPopulation Control
World and Country Population TotalsDistribution and Structure: 3/4 of people live on 5% of earths surface!Total: 6 billion on planet as of Oct. 12, 1999Five most populous regions and countries REGION POPULATION COUNTRY POPULATION East Asia 1.5 billion China 1.254 billion S.Asia 1.2 billion India 986 million Europe 750 million U.S. 300 million SE Asia 500 million Indonesia 206 million East N. A. 120 million Brazil 168 million
Doubling TimesThe doubling time is the Grow th Doublingnumber of years before a Rate Tim epopulation will be twice as (% per in Yearslarge as it is today. Year) 0.1 700World = 50 0.5 140U.S. = 34 1 70MDC = 543 2 35LDC = 40 3 23 4 18Honduras = 22 5 14Belize = 19 6 12Denmark = 700 7 10Russia = never? 10 7
Fertility Rates2.1 is generally regarded as a replacement rate(the rate at which a population neither grows norshrinks) in the developed world. In less developedcountries this rate should be higher (2.8?).Iran 4.7USA 2.0Italy 1.2High infant mortality tends to result in higherfertility rates as families seek “insurance” for theloss of children.
Problems with the Demographic Transition Model• based on European experience, assumes allcountries will progress to completeindustrialization• many countries “stuck” in stage 2 or stage 3• reflects logic of continuous growth, animpossibility
Population and the Environment I = P x A x TImpact = Population x Affluence x Technology Population influenced environmental problems: • Global Warming • Habitat Loss / Endangered Species • Resource Depletion • Food Shortages? Not globally, but