Population Growth And Environmental Challenges of Cities

2. PopulationGrowthAnd EnvironmentalChallengesofCities
GROUP NO 6

3. GROUPMEMBERS
NAME ROLL NO
Haleema Sadia 18081561-090
Nimra Rasheed 18081561-113
Muhammad Haris Hijazi 18081561-105
Nimra Mubeen 18081561-099
Ayesha Zafar 18081561-107
Nimra Rasheed 18081561-100

4. contents
Population
Population growth rate
 population growth and environmental challenges
Effect of population growth on economic of a country
Population effect on environment
Environmental impacts due to urban growth
Role of world population day
• CONCLUSION

5. Population growth

6. Population growth

7. Populationgrowthand environmentalchallenges
• The world population is growing by approximately 74
million people per year
• Population is only one of many factors influencing the
environment
• We have consumed more resources in the last 50 years
than the whole of humanity before us
• The 20th century saw the biggest increase in the world’s
population in human history

8. CONT…
• In 2015 the world population is more than 7.3 billion people.
• That’s more than seven billion three hundred million bodies that
need to be fed, clothed, kept warm and ideally, nurtured and
educated.
• More than 7.3 billion individuals who, while busy consuming
resources, are also producing vast quantities of waste, and our
numbers continue to grow.
• The United Nations estimates that the world population will reach
9.2 billion by 2050.

9. Cont…
• For most of our existence the human population
has grown very slowly, kept in check by disease,
climate fluctuations and other social factors.
• It took until 1804 for us to reach 1 billion people.
• Since then, continuing improvements in nutrition,
medicine and technology have seen our
population increase rapidly.

10. Populationgrowthrate
What is PGR?
• The fractional rate at which
the number of individuals in
a population increases
specially,ordinarily refer to
the change in population
over a unit time period.

11. POPULATEDCITIESOFWORLD
CITY COUNTRY POPULATION
New York United state of America 8.623 million
Cairo Egypt 9.7 million
Osaka Japan 2.691 million
Mexico city Mexico 8.851 million
Beijing China 21.71 million
Karachi Pakistan 14.91 million
Mumbai India 18.41 million
Shanghai China 24.18 million
Delhi India 18.98 million
Tokyo Japan 9.273 million

12. Pakistanpopulatedcities
the 36th largest country by area, Pakistan
• has highest population in the world 200 million.
• Pakistan has 8 cities with more than a million people,
• 59 cities with between 100,000 and 1 million people
• 284 cities with between 10,000 and 100,000 people.

13. Populatedcitiesof pakistan
City name population
Karachi 11,624,219
Lahore 6,310,888
Faisalabad 2,506,595
Rawalpindi 1,743,101
Multan 1,437,230
Hyderabad 1,386,330
Gujranwala 1,384,471
Peshawar 1,218,773
Rahim Yar Khan 788,915
Quetta 733,675

14. Effectofpopulationoneconomy of acountry

15. Cont…
Higher rate of population requires more investment
Large population creates problems of unemployment
Growing Population lowers Standard of Living
Adverse Effect on Environment
Rapide Population déclines Social Infrastructure

16. Cont…
• Faster population growth makes
the choice between higher
consumption
• the investment needed to bring
higher consumption in the
future. Economic development
depends upon investment
• As population increases, the
proportion of workers to total
population rises.
• In the absence of
complementary resources, it is
not possible to expand jobs.
• standard of living is the per
capita income, the factors
affecting per capita income in
relation to population growth
equally apply to the standard of
living. A rapidly increasing
population leads to an increased
demand for food products,
clothes, houses, etc.
• Pressure of population on land
increases because the supply of
land is inelastic
• As the number of landless
workers increases, their wages
fall. Thus low per capita
productivity reduces the
propensity to save and invest.

17. Populationeffecton environmentalsustainability
• Population growth has had a negative impact on the quality of the
environment.
• As more land is used for agriculture or living purposes, the
environment changes drastically.
• As the population of humans grows in certain cities or rural areas,
more resources must be used to maintain the well-being of the
population.
• With the increasing pressure on available resources, many habitats
are being destroyed.
• Humans are using up more resources and the amount and nature
can’t replenish those resources fast enough to supply our needs.

18. Cont…
Generation of Waste
Strain on Forests
Urbanization
Industrialization
Land Degradation
Transport Development
Productivity
Technology

19. Cont…

20. Environmentalimpactduetourbangrowth
Impact on atmosphere and climate
• Creation of heat island
• Change in air quality
• Change in patterns and participation
Impact on lithosphere and land resources
• Erosion and other changes in land quality
• Pollution

21. Cont…
Impact on hydrosphere and water resources
• Flow of water into streams
• Flow of water through streams
• Degraded water quality
Impact on biosphere
• Modification of habitat
• Destruction of habitat
• Creation of new habitat

22. ROLEOFWORLDPOPULATIONDAY
World Population day is an annual event, observed on
July 11 every year, which seeks to raise awareness
of global population issues.
 The event was established by the Governing Council of
the United Nations Development Programme in 1989.
World Population Day aims to increase people's awareness on
various population issues such as the importance of family
planning, gender equality, poverty, maternal health and human
rights.

23. CONCLUSION
Perhaps if solutions like the one child policy or birth control and
others were applied to India and the World the population growth
would slow, giving us more control of our own destiny.
Only with the effort of many people can we reduce the population
growth and continue to live the lives we currently have.
 If we continue to have such a high population growth rate we will
struggle to support the billions of people on this planet.
 This will cause famine and conflict and will limit the resources for
future generations.
We will destroy the earth rather than preserving it which is our duty
since we inhabit the earth.
 By implementing birth control it would directly limit the birth rate
in countries that have extremely high growth rates and would
ultimately slow the population growt