READING AGE-SEX    PYRAMID   AFFECTED BYASSOCIATED FACTOR
MIGRATION AND AGE-SEX COMPOSITION   Quite often people    who migrate are    looking for    employment   Great majority ...
(C) Francesco Scudellari-Comenius                           Assistantship 2010/11Male                                     ...
e.g. of male labourinflux:2000: Qatar2005: Dubai,e.g of femalelabour influx:2000: USA (fromThe Philippines)
FERTILITY AND AGE-SEX COMPOSITION   On    average, between    103 and 107 boys    are born for every    100 girls   As a...
   Decrease in the overall fertility will reduce the    size of the younger cohorts of the population   Baby booms are c...
   For    example, the    shape of the    population    pyramid of USA    in 2000    especially at    ages 34-    54, ref...
MORTALITY AND AGE-SEX COMPOSITION   Male tend to die at higher rates at all ages than    females   Most changes in morta...
   The pyramid of    Sudan in 1990   The AIDS pandemic    is already having    marked effects on    some young adults   ...
THE PROBLEMS CAUSED BY HIGH DEPENDENCY RATIOS   Youthful populations of many LEDCs:       Government needs to spend more...
THE PROBLEMS CAUSED BY HIGH DEPENDENCY RATIOS   Ageing population in MEDCs:       Limited manpower for defense of a coun...
HOW MAY PYRAMID CHANGE OVER TIME?
Over time, as a country develops, the shape of its   population pyramid changes from a triangular shape to a barrel-like s...
(C) Francesco Scudellari-Comenius                          Assistantship 2010/11POPULATION PYRAMID OF JAPAN in the year 20...
(C) Francesco Scudellari-Comenius                                   Assistantship 2010/11POPULATION PYRAMID OF JAPAN in th...
(C) Francesco Scudellari-Comenius                                           Assistantship 2010/11 POPULATION PYRAMID OF JA...
(C) Francesco Scudellari-Comenius                                    Assistantship 2010/11POPULATION PYRAMID OF INDIA in t...
(C) Francesco Scudellari-Comenius                                  Assistantship 2010/11POPULATION PYRAMID OF INDIA in the...
(C) Francesco Scudellari-Comenius                                     Assistantship 2010/11POPULATION PYRAMID OF INDIA in ...
BRUNEI1990            2000          2010       2020            2050
Reading age sex pyramid - lesson 5
Reading age sex pyramid - lesson 5
Reading age sex pyramid - lesson 5
Reading age sex pyramid - lesson 5
Reading age sex pyramid - lesson 5
Reading age sex pyramid - lesson 5
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Reading age sex pyramid - lesson 5

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Transcript of "Reading age sex pyramid - lesson 5"

  1. 1. READING AGE-SEX PYRAMID AFFECTED BYASSOCIATED FACTOR
  2. 2. MIGRATION AND AGE-SEX COMPOSITION Quite often people who migrate are looking for employment Great majority of movers will be young adults The pyramid shows the effect that a massive influx of labour migrants
  3. 3. (C) Francesco Scudellari-Comenius Assistantship 2010/11Male Female Population in thousands This country has a large number of temporary workers. These are people who migrate here especially to find a job.
  4. 4. e.g. of male labourinflux:2000: Qatar2005: Dubai,e.g of femalelabour influx:2000: USA (fromThe Philippines)
  5. 5. FERTILITY AND AGE-SEX COMPOSITION On average, between 103 and 107 boys are born for every 100 girls As a result, males outnumbered females
  6. 6.  Decrease in the overall fertility will reduce the size of the younger cohorts of the population Baby booms are created when large proportions of the women in a population have children in the same years, typically due to some critical event (e.g. end of a war)
  7. 7.  For example, the shape of the population pyramid of USA in 2000 especially at ages 34- 54, reflects in part, the effects of the post- World War II
  8. 8. MORTALITY AND AGE-SEX COMPOSITION Male tend to die at higher rates at all ages than females Most changes in mortality experienced by a population typically affect people in certain age-sex group E.g:  A reduction in deaths from infectious and parasitic diseases typically affect younger people the most  Conversely, reduction in deaths from chronic and degenerative diseases tends to affect older people
  9. 9.  The pyramid of Sudan in 1990 The AIDS pandemic is already having marked effects on some young adults population
  10. 10. THE PROBLEMS CAUSED BY HIGH DEPENDENCY RATIOS Youthful populations of many LEDCs:  Government needs to spend more money on education and healthcare. However, LEDCs are unlikely to have sufficient money to spend, therefore education levels of women remain low and will continue to have large families  More young women are reaching child bearing age so natural increase will continue to be high  Overpopulation – not enough resources to support the youthful population
  11. 11. THE PROBLEMS CAUSED BY HIGH DEPENDENCY RATIOS Ageing population in MEDCs:  Limited manpower for defense of a country  Give pressure to government to provide more medical and health facility for ageing population  Shortage of labour, most of elderly retire and not enough young people to replace them  Need more housing facilities and transport to meet the need of ageing population
  12. 12. HOW MAY PYRAMID CHANGE OVER TIME?
  13. 13. Over time, as a country develops, the shape of its population pyramid changes from a triangular shape to a barrel-like shape with straighter edges.
  14. 14. (C) Francesco Scudellari-Comenius Assistantship 2010/11POPULATION PYRAMID OF JAPAN in the year 2000What happens next?
  15. 15. (C) Francesco Scudellari-Comenius Assistantship 2010/11POPULATION PYRAMID OF JAPAN in the year 2025
  16. 16. (C) Francesco Scudellari-Comenius Assistantship 2010/11 POPULATION PYRAMID OF JAPAN in the year 2050What is going to happen to Japan’s population in the future?Why does this matter?
  17. 17. (C) Francesco Scudellari-Comenius Assistantship 2010/11POPULATION PYRAMID OF INDIA in the year 2000 What happens next?
  18. 18. (C) Francesco Scudellari-Comenius Assistantship 2010/11POPULATION PYRAMID OF INDIA in the year 2025
  19. 19. (C) Francesco Scudellari-Comenius Assistantship 2010/11POPULATION PYRAMID OF INDIA in the year 2050
  20. 20. BRUNEI1990 2000 2010 2020 2050
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