Population Geography

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Population Geography

  1. 1. Population Geography10/30/12 1
  2. 2. Population Geography:Essential Questions• Where is the worlds population distributed?• Where has the worlds population increased?• Why is population increasing at different rates in different countries?• Why might the world face an overpopulation problem?10/30/12 2
  3. 3. Population Geography• Density refers to the frequency with which something occurs• Distribution refers to the arrangement of a feature in space10/30/12 3
  4. 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 land10/30/12 4
  5. 5. World PopulationDensity10/30/12 5
  6. 6. United States Density10/30/12 6
  7. 7. United States Density10/30/12 7
  8. 8. Minnesota Density10/30/12 8
  9. 9. China10/30/12 9
  10. 10. Population Distribution• describes the locations on the Earth’s surface where people live• Australia• Egypt• Mexico• Canada10/30/12 10
  11. 11. 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 land10/30/12 11
  12. 12. 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 mile10/30/12 12
  13. 13. World PopulationConcentrations• East Asia• South Asia• Southeast Asia• Europe In the three Asian clusters, more than ½ the world’s population lives on less than 10% of the world’s land.10/30/12 13
  14. 14. World PopulationClusters 4 1 2 310/30/12 14
  15. 15. 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 service10/30/12 15
  16. 16. 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 mountains10/30/12 16
  17. 17. Southeast Asia• Indonesia, Papua New Guinea, Philippines – Island nations in the Pacific – Around river valleys and deltas10/30/12 17
  18. 18. Europe• Britain, Germany, Poland, Ukraine, Belarus, France, N Italy – ¾ live in cities – Less than 20% are farmers – Highest concentration near coal fields10/30/12 18
  19. 19. Subordinate Regions• Eastern US – Bosnywash, Chicago, Detroit, Cleveland, California – In Europe and North America, cities and towns more densely populated that rural areas – Megalopolis10/30/12 19
  20. 20. Subordinate Regions• Western Africa – Nigeria most populous African country10/30/12 20
  21. 21. 4 1 2 310/30/12 21
  22. 22. 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: 14/100010/30/12 22
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  25. 25. 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: 8/100010/30/12 25
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  28. 28. Population Stats• Natural Increase – difference between number of births and deaths during a specific time period – US: .88% 40 35 Natural Increase 30 25 20 15 10 5 0 1950- 1955- 1960- 1965- 1970- 1975- 1980- 1985- 1990- 1995- 2000- 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 200510/30/12 Birth rate Death rate 28
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  32. 32. Population Stats• Total Fertility Rate – the number of children born to women of child bearing age – 15-45 ?? – 2.1 China, M acao Special Administrative Region 0.84 China, Hong Kong Special Administrative 0.94 Region Ukraine 1.12 Czech Republic 1.17 Lowest Slovakia 1.20 Fertility Rates Slovenia 1.22 Worldwide Republic of Korea 1.23 Republic of Moldova 1.23 Bulgaria 1.24 Belarus 1.2410/30/12 32
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  35. 35. Population Stats• Infant Mortality Rate – the number of children who die before they reach one year – US: 6.3/100010/30/12 35
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  39. 39. 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 right10/30/12 39
  40. 40. Population Geography10/30/12 40
  41. 41. Measuring Growth• Linear Growth – increases in a uniform amount during a series of equal time periods10/30/12 41
  42. 42. Measuring Growth• Exponential Growth – increases in a compounding amount over a series of equal time periods10/30/12 42
  43. 43. Measuring Growth• Doubling Time – the time it takes to double a country’s population – 70 / NIR = Doubling Time10/30/12 43
  44. 44. World Population Growth, in Billions Number of years to add each billion (year)First Billion All of Human History (1800) Second 130 (1930) Third 30 (1960) Fourth 15 (1975) 1st Billion: 1800 years Fifth 12 (1987) 2nd Billion: 130 years 4th Billion: 45 years Sixth 12 (1999) 8th Billion: 52 years Seventh 14 (2013) Eighth 14 (2027) Ninth 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. 10/30/12 44
  45. 45. 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 increase10/30/12 45
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  47. 47. Population Geography10/30/12 47
  48. 48. Population Geography10/30/12 48
  49. 49. Population Geography10/30/12 49
  50. 50. Population Geography10/30/12 50
  51. 51. Population Geography10/30/12 51
  52. 52. Population Geography10/30/12 52
  53. 53. Population Geography10/30/12 53
  54. 54. Population Geography10/30/12 http://desip.igc.org/populationmaps.h 54 tml
  55. 55. Population Geography10/30/12 55
  56. 56. Population Center of theUS10/30/12 56

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