Population geography

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  • 1. Population Geography 10/03/11
  • 2. Population Geography: Essential Questions
    • Where is the world's population distributed?
    • Where has the world's population increased?
    • Why is population increasing at different rates in different countries?
    • Why might the world face an overpopulation problem?
    10/03/11
  • 3. Population Geography
    • Density refers to the frequency with which something occurs
    • Distribution refers to the arrangement of a feature in space
    10/03/11
  • 4. Population Density
    • a measure of the number of people per unit area of land
      • arithmetic: people per unit area of land
      • physiologic: people supported by arable land
      • agricultural: farmers to amount of arable land
    10/03/11
  • 5. World Population Density 10/03/11
  • 6. United States Density 10/03/11
  • 7. China 10/03/11
  • 8. Population Distribution
    • describes the locations on the Earth’s surface where people live
    • Australia
    • Egypt
    • Mexico
    • Canada
    10/03/11
  • 9. Bangladesh
    • Population: 144,000,000
    • Area: 144,000 sq miles
    • 62% arable land (89,280 sq miles)
    • physiologic density=1612 people per square mile of arable land
    10/03/11
  • 10. Montana/United States
    • Montana Population: 145,000
    • Area: 902,195 square miles
    • 18% arable land = 162,395 square miles
    • Physiologic density = 1119 per square mile
    • US Population: 300,000,000
    • Area: 3,717,810 square miles
    • 19% arable land = 706,383 square miles
    • Physiologic density = 424 per square mile
    10/03/11
  • 11. World Population Concentrations
    • East Asia
    • South Asia
    • Southeast Asia
    • Europe
    10/03/11 In the three Asian clusters, more than ½ the world’s population lives on less than 10% of the world’s land.
  • 12. 10/03/11 4 1 3 2
  • 13. East Asia
    • China, Korea, Japan, Taiwan
      • 1/5 the world’s total population
      • 5/6 of the region’s population live in China, mostly river and coastal regions
      • 2/3 of people in China live as farmers in rural areas
      • In Japan and Korean Peninsula, ¾+ live in urban areas and work in industry and service
    10/03/11
  • 14. South Asia
    • India, Pakistan, Bangladesh, Sri Lanka
      • 1/5 the world’s population
      • most are rural farmers (3/4), not city dwellers
      • centered along Ganges and Indus river valleys, lowlands and coastal areas
      • restrained by mountains
    10/03/11
  • 15. Southeast Asia
    • Indonesia, Papua New Guinea, Philippines
      • Island nations in the Pacific
      • Around river valleys and deltas
    10/03/11
  • 16. Europe
    • Britain, Germany, Poland, Ukraine, Belarus, France, N Italy
      • ¾ live in cities
      • Less than 20% are farmers
      • Highest concentration near coal fields
    10/03/11
  • 17. Subordinate Regions
    • Eastern US
      • Bosnywash, Chicago, Detroit, Cleveland, California
      • In Europe and North America, cities and towns more densely populated that rural areas
      • Megalopolis
    10/03/11
  • 18. Subordinate Regions
    • Western Africa
      • Nigeria most populous African country
    10/03/11
  • 19. 10/03/11 4 1 3 2
  • 20. Population Stats
    • Birth Rate
      • number of live births per year per 1000 people in the population
      • +30 is high
      • highest today in Africa and SW Asia
      • lowest in Europe
      • inversely related to modernization, industrialization, urbanization and economic development
      • exception: China
      • US: 14/1000
    10/03/11
  • 21. 10/03/11
  • 22. 10/03/11
  • 23. Population Stats
    • Death Rate
      • number of deaths per thousand people in a given year
      • highest in tropical Africa
      • lowest in N America, S America, Europe, Japan, Australia
      • high CDR’s tend to reflect high infant mortality
      • US: 8/1000
    10/03/11
  • 24. 10/03/11
  • 25. 10/03/11
  • 26. Population Stats
    • Natural Increase
      • difference between number of births and deaths during a specific time period
      • US: .88%
    10/03/11 Natural Increase
  • 27. 10/03/11
  • 28. 10/03/11
  • 29. 10/03/11
  • 30. Population Stats
    • Total Fertility Rate
      • the number of children born to women of child bearing age
      • 15-45 ??
      • 2.1
    10/03/11 Lowest Fertility Rates Worldwide
  • 31. 10/03/11
  • 32. 10/03/11
  • 33. Population Stats
    • Infant Mortality Rate
      • the number of children who die before they reach one year
      • US: 6.3/1000
    10/03/11
  • 34. 10/03/11
  • 35. 10/03/11
  • 36. 10/03/11
  • 37. Population Pyramids
    • Show age and sex distribution for a given region
      • County, city, country, state
    • Y axis shows age cohorts
      • Usually in intervals of 5
      • Ranging from 0-85
    • X axis shows females and males
      • Males on the left
      • Females always right
    10/03/11
  • 38. Population Geography 10/03/11
  • 39. Measuring Growth
    • Linear Growth
      • increases in a uniform amount during a series of equal time periods
    10/03/11
  • 40. Measuring Growth
    • Exponential Growth
      • increases in a compounding amount over a series of equal time periods
    10/03/11
  • 41. Measuring Growth
    • Doubling Time
      • the time it takes to double a country’s population
      • 70 / NIR = Doubling Time
    10/03/11
  • 42. World Population Growth, in Billions 10/03/11 Number of years to add each billion (year) All of Human History (1800) 130 (1930) 30 (1960) 15 (1975) 12 (1987) 12 (1999) 14 (2013) 14 (2027) 21 (2048) Sources: First and second billion: Population Reference Bureau. Third through ninth billion: United Nations, World Population Prospects: The 2004 Revision (medium scenario), 2005. 1st Billion: 1800 years 2 nd Billion: 130 years 4 th Billion: 45 years 8 th Billion: 52 years
  • 43. Measuring Growth
    • Population Explosion
      • refers to the rapid growth of the world’s population during the last century accompanied by ever shorter doubling times and accelerating rates of increase
    10/03/11
  • 44. 10/03/11
  • 45. Population Geography 10/03/11                                            
  • 46. Population Geography 10/03/11                                            
  • 47. Population Geography 10/03/11                                            
  • 48. Population Geography 10/03/11                                            
  • 49. Population Geography 10/03/11                                            
  • 50. Population Geography 10/03/11                                            
  • 51. Population Geography 10/03/11                                            
  • 52. Population Geography 10/03/11 http://desip.igc.org/populationmaps.html                                            
  • 53. Population Geography 10/03/11
  • 54. Population Center of the US 10/03/11