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Descrição
Mapa Mental por lilcitygirl, atualizado more than 1 year ago
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Criado por lilcitygirl
quase 12 anos atrás
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Megacities
- defined by population, have at least
10 million inhabitants
- "an urban
agglomeration of
10 million people
or more"
- "an urban
agglomeration of
10 million people
or more"
- Megacities in
developing world have
grown rapidly
- They now face crises
of infastructure,
poverty and
unemployment
- They now face crises
of infastructure,
poverty and
unemployment
- Number of
megacities has
grown rapidly
in the past 60
years
- In 1950 there
were only two
megacities
- Tokyo
- New York
- Tokyo
- In 2010,
there were 21
megacities
- 15 of these
megacities
were in the
developing
world
- 15 of these
megacities
were in the
developing
world
- By 2025, it is
expected that
there will be 26
megacities
- In 1950 there
were only two
megacities
- Urbanisation in the
developing world has
spawned the rapid
growth of megacities
- This has happened
particularly since
1970
- Driving force behind
urbanisation has been
massive rural - urban
migration
- Also rates of natural
increase which are higher
in urban than in rural areas
- This has happened
particularly since
1970
- Today, half
the world's
population live
in towns and
cities
- By 2030, the
proportion will be
80% of people
living in towns
and cities
- 95% of this
increase will
be in the
developing
world
- 95% of this
increase will
be in the
developing
world
- Problems with
Megacities
- Inadequate infastructure
- Housing
- Sewage
- Water Supply
- Housing
- Lack of
Unemployment
- The large growth of megacities has
meant that it outstrips the ability of
urban authorities to meet even the
most basic needs of millions of
citizens
- Inadequate infastructure
- Lagos, Nigeria
- Experienced
a staggering
32 fold
increase in
population
between
1950 and
2010
- By 2050, its population could reach 25 million
- It would make
Lagos the 3rd
largest city in
the world
- It would make
Lagos the 3rd
largest city in
the world
- Housing is grossly inadequate
- Shortage
of 5
million
homes
- Households with
shelter often live in
appalling
conditions
- Shortage
of 5
million
homes
- Densities exceed 20,000 persons/km2
- Poor sanitation,
contaminated
drinking water
and air pollution
- Lead to high
mortality in slums
- Lead to high
mortality in slums
- Shortage of jobs
- Megacities support large informal
sectors of small business enterprises
which are unregulated by the government
- In Laos, this sector
absorbs 80% of
workers
- The presence of this
sector highlights a lack
of investment
- In Laos, this sector
absorbs 80% of
workers
- Megacities support large informal
sectors of small business enterprises
which are unregulated by the government
- Experienced
a staggering
32 fold
increase in
population
between
1950 and
2010
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