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  • [5] Demographic transition model
    [8] Photo of Japanese sector in Sao Paulo +
  • Population

    1. 1. Human Population Growth
    2. 2. Human Population Growth
    3. 3. The extent of population growth: • World population should reach 10 billion by 2080 and then remain fairly stable. • Population growth is much higher in LEDCs than MEDCs. WORLD POPULATION GROWTH (1750-2050) World Population Growth
    4. 4. Continental population growth: • The continent with the fastest rate of growth is Africa. • Europe has the slowest rate of growth. Without immigration from other continents the population would be falling. Division of world population: • China and India together account for more than one- third of the world’s population. 159Pakistan.6 144Russia.7 141Bangladesh.8 137Nigeria.9 POPULATION (MILLIONS – 106 ) COUNTRY.RANK. 128Japan.10 179Brazil.5 219Indonesia.4 294United States.3 1,087India.2 1,300China.1 POPULATION SIZE BY RANK AND COUNTRY (2004) The table above shows the contrasting sizes of population by country in 2004. World Population Growth
    5. 5. THE POPULATION GROWTH Natural increase: where the birth rate is the higher is known as natural increase of population. (growth of population as a result of births and deaths) Birth Rate - Death Rate = Natural Increase  Natural decrease: where the death rate is the higher is known as natural decrease.
    6. 6. Factors affecting Population Growth Rates Population growth depends on rates of birth, death, immigration, and emigration. (birth rate + immigration rate) – (death rate + emigration rate) = population growth rate
    7. 7. THE POPULATION GROWTH  Birth rate: Birth rate describes the average number of live births in a year for every 1000 people per year.     Death rate: Death rate describes the average number of deaths per 1000 people in the population per year. Immigration- movement of individuals into a population . Emigration- movement of individuals out of a population
    8. 8. 24 11 0 5 10 15 20 25 30 LEDCs MEDCs Per1000Population BIRTH RATE 2004 Population Change
    9. 9. Population growth today The increase of the world population Every second, on average, four babies are born. Every second, on average, two people die. Every second, on average, the population increased by two people. Two more people per second means 200 000 more people per day, and 75 million more people per year. In other words, the world population – 6,5 billion in 2005 – is growing by 1,2 percent each year. At this 1,2 % annual growth rate, the population doubles evrey 60 years. If the number of people on Earth carried on increasing at this speed, the 6,5 billion in 2005 would become 13 billion in 2065, 26 billion in 2125 ans so on. But the population does not grow at the same speed indefinitely. On the contrary, the United Nations predict that the world population will level off at around 9 billion people before the end of the century. Why is that ?
    10. 10. o The demographic transition model below shows how populations change over time. All countries started at Stage 1. • The UK and other MEDCs are mainly in Stage 4 of the model. Demographic transition (population change One of the most important social changes in the history of humankind is called “Demographic Transition Time Stage 1 Stage 2 Stage 3 Stage 4 Natural increase Birth rate Death rate
    11. 11.  Pakistan is sixth most populous country in the world with an estimated population of 184.35 million in 2012-2013. The growth rate of population during 2012-2013 is 2.0 percent. Under current circumstances, it is expected that Pakistan will attain fifth position in the world in terms of total population in 2050.
    12. 12. Migration  Movement of people from one area to another. Types of migration  In-migration: people arriving in the area from other places. (Immigrants)  Out-migration: People leaving the area to go to other areas. (emigrants)  Migration can be internal, within a country such as rural to urban.
    13. 13. Internal or local mIgratIon Rural to urban migration Urban to rural migration Urban to urban migration Rural to rural migration
    14. 14. Population density: • This is the number of people per square kilometre. Densely populated. • Many people live in some parts of the world. These areas are densely populated. Sparsely populated. • Few people live in other parts of the world. These areas are sparsely populated. Population Distribution & Density
    15. 15. FACTORS AFFECTING DISTRIBUTION AND DENSITY OF POPULATION  Physical factors such as relief, climate, vegetation, soil, natural resources, water supply.  Social factors such as the proportion of urban to rural population, better housing opportunities, education, health facilities and entertainment.  Economic factors such as the resources, amount of industrialization, transportation and development of tourism.  Political factors such as government policy on birth control.
    16. 16. Classification of density 1. Thinly populated region (10 persons or less per square kilometre) : This includes a large area of southwestern Balochistan and the Marri-Bagti Hills. The area is covered with hills, plateau, mountains and desert(kharan).
    17. 17. 2.Moderately populated region(11 to 50 persons per square km)  The Nihing-Dasht river valley of southern balochistan, the porali river valley of southeastern balochistan and central and northern balochistan, Chitral district in the northern part of Pakistan belongs to this region.
    18. 18. 3.Densely populated region (51 to 100 persons)  On the west it comprises Dadu District of Sindh; karak, kohat and hangu districts of khber Pakhtunkhwa, kurram agency and part of potwar plateau.  Thar-Cholistan desert belongs to this region.
    19. 19. 4. Very densely populated region (101 to 200 persons per square km)  The Indus valley, extending from Sindh and Punjab, including the chaj doab. Bannu valley, sutlej river valley and a large area of khyber Pakhtunkhwa comprising the swat valley, belongs to this region.
    20. 20. 5. Most densely populated region (more than 200 persons per square km) Two most densely populated regions 1. North-eastern Punjab comprising the Chaj, Rechna and Bari doabs. heavy immigration takes place. 2. Rawalpindi district northward into a fairly large area in Khyber Pakhtunkhwa.
    21. 21. Distribution of population: Describes the way in which people are spread out across the world. This distribution is uneven and changes over periods of time.
    22. 22. Population Distribution
    23. 23. OCCUPATIONAL GROPUPS YEAR PRIMARY OCCUPATION (AGRICULTURE, FORESTRY, MINING) SECONDRY OCCUPATION (MANUFACTURI NG) TERTIARY ( ALL ACTIVITIES OTHER THAN PRIMARY AND SECONDRY 1951 65.3 11.6 23.1 1961 59.3 20.2 20.5 1973 57.6 15.3 27.1 1981 52.7 14.1 33.2 2000 48.4 11.6 40 2007 43.6 24.7 31.7 2010-2011 48.1 13.6 38.3
    24. 24. Population Data in PakistanPopulation Data in Pakistan 2011 2012 2013 Total Population (Million) 177.1 180.71 184.35 Urban Population (Million) 65.3 67.55 69.87 Rural Population (Million) 111.8 113.16 114.48 TFR 3.5 3.4 3.3 Crude Birth Rate (per thousand) 27.50 27.20 26.80 Crude Death Rate (per thousand) 7.30 7.20 7.00 Population Growth Rate 2.05 2.03 2.00 Life Expectancy Year Male 65.8 66.1 66.50 Female 63.9 64.3 64.6
    25. 25. Population comparison between 1998 & 2030Population comparison between 1998 & 2030
    26. 26. CAUSES OF OVER POPULATION Reasons for High Birth rate: High birth rate due to lack of education Lack of medical facilities Agricultural family needs more children to support the agricultural field. Children are considered to be sign of virility and religious belief
    27. 27. Transportation Systems suffer from overpopulation
    28. 28. Competition / Survival of the Fittest Living space and food are limited, only the strong will survive to reproduce.
    29. 29. Deforestation
    30. 30. Effects of Urbanization
    31. 31. Famine
    32. 32. More People = More Energy = MORE POLUTION
    33. 33. Overpopulation causes environmental problems like garbage. Or a source of food for the poor.
    34. 34. Drastic overpopulation causes economic problems and creates slums