Population geography

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Population geography

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

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