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Effects of Very High Population Densities

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by

Brian Calvey

on 27 November 2013

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Transcript of Effects of Very High Population Densities

Effects of Very High Population Densities
The population density of an area can greatly affect that area's economy and social conditions.

What do you think is meant by this statement?
Kolkata is one of India's largest and most densely populated cities. its rapidly growing population now numbers more than 16 million people.
Much of Kolkata's population is made up of very poor people who
migrate
from rural areass into the city in search of work.
These migrants usually crowd into large urban slums called
shanty towns or Bustees
that grow up in an unplanned way around the edges of the city.
People in the overpopulated city of Kolkata face the following problems;

1. Overcrowding,
2. Lack of Open Space,
3. Shortage of Clean Water,
4. Pollution
Overcrowding
Barabazar (a shanty town) contains 100,000 people per square kilometre.
Most bustee families live in tiny overcrowded house. These houses are sometimes no bigger than an average-sized Irish bathroom.
Overcrowding
Many people live in
temporary shacks
made from pieces of timber, canvas or plastic sheeting.
More than half a million people have not dwellings at all. these are the
pavement people
, who live on the streets.
Lack of Open Space
Kolkata now sprawls for more than 50 kilometres along the banks of the river Hooghly. It contains very little open space. In the poorer parts of the city especially, buildings are crammed together and people occupy almost every scrap of land.
Shortage of Clean Water
Clean water is in short supply. Some drinking water has been poisoned by old
lead
water pipes. Up to 50 people often have to share a single
water tap
. These are the lucky ones.
Many pavement people have no clean water at all and are forced to drink
unfiltered water
that was intended only for street cleaning. Drinking this water often leads to serious illnesses such as
dysentery
.
Pollution
Toilet and kitchen waste flows through open drains on some streets. Heavy monsoon rains can flood these drains and flush the waste all over the streets and into houses.
Pollution
The city cannot afford a proper rubbish collection system, so garbage piles up on many streets.
Pollution
Kolkata is one of the world's worst cities for
air
pollution
. Fumes from motor traffic, industries and cooking fires cause widespread lung conditions such as
asthma
.
Homework

Read the case study of very high population density of Hong Kong on page 208 and 209.
Full transcript