Population geography
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Population geography

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    Population geography Population geography Presentation Transcript

    • Population Geography 10/03/11
    • Population Geography: Essential Questions
      • Where is the world's population distributed?
      • Where has the world's population increased?
      • Why is population increasing at different rates in different countries?
      • Why might the world face an overpopulation problem?
      10/03/11
    • Population Geography
      • Density refers to the frequency with which something occurs
      • Distribution refers to the arrangement of a feature in space
      10/03/11
    • Population Density
      • a measure of the number of people per unit area of land
        • arithmetic: people per unit area of land
        • physiologic: people supported by arable land
        • agricultural: farmers to amount of arable land
      10/03/11
    • World Population Density 10/03/11
    • United States Density 10/03/11
    • China 10/03/11
    • Population Distribution
      • describes the locations on the Earth’s surface where people live
      • Australia
      • Egypt
      • Mexico
      • Canada
      10/03/11
    • Bangladesh
      • Population: 144,000,000
      • Area: 144,000 sq miles
      • 62% arable land (89,280 sq miles)
      • physiologic density=1612 people per square mile of arable land
      10/03/11
    • Montana/United States
      • Montana Population: 145,000
      • Area: 902,195 square miles
      • 18% arable land = 162,395 square miles
      • Physiologic density = 1119 per square mile
      • US Population: 300,000,000
      • Area: 3,717,810 square miles
      • 19% arable land = 706,383 square miles
      • Physiologic density = 424 per square mile
      10/03/11
    • World Population Concentrations
      • East Asia
      • South Asia
      • Southeast Asia
      • Europe
      10/03/11 In the three Asian clusters, more than ½ the world’s population lives on less than 10% of the world’s land.
    • 10/03/11 4 1 3 2
    • East Asia
      • China, Korea, Japan, Taiwan
        • 1/5 the world’s total population
        • 5/6 of the region’s population live in China, mostly river and coastal regions
        • 2/3 of people in China live as farmers in rural areas
        • In Japan and Korean Peninsula, ¾+ live in urban areas and work in industry and service
      10/03/11
    • South Asia
      • India, Pakistan, Bangladesh, Sri Lanka
        • 1/5 the world’s population
        • most are rural farmers (3/4), not city dwellers
        • centered along Ganges and Indus river valleys, lowlands and coastal areas
        • restrained by mountains
      10/03/11
    • Southeast Asia
      • Indonesia, Papua New Guinea, Philippines
        • Island nations in the Pacific
        • Around river valleys and deltas
      10/03/11
    • Europe
      • Britain, Germany, Poland, Ukraine, Belarus, France, N Italy
        • ¾ live in cities
        • Less than 20% are farmers
        • Highest concentration near coal fields
      10/03/11
    • Subordinate Regions
      • Eastern US
        • Bosnywash, Chicago, Detroit, Cleveland, California
        • In Europe and North America, cities and towns more densely populated that rural areas
        • Megalopolis
      10/03/11
    • Subordinate Regions
      • Western Africa
        • Nigeria most populous African country
      10/03/11
    • 10/03/11 4 1 3 2
    • Population Stats
      • Birth Rate
        • number of live births per year per 1000 people in the population
        • +30 is high
        • highest today in Africa and SW Asia
        • lowest in Europe
        • inversely related to modernization, industrialization, urbanization and economic development
        • exception: China
        • US: 14/1000
      10/03/11
    • 10/03/11
    • 10/03/11
    • Population Stats
      • Death Rate
        • number of deaths per thousand people in a given year
        • highest in tropical Africa
        • lowest in N America, S America, Europe, Japan, Australia
        • high CDR’s tend to reflect high infant mortality
        • US: 8/1000
      10/03/11
    • 10/03/11
    • 10/03/11
    • Population Stats
      • Natural Increase
        • difference between number of births and deaths during a specific time period
        • US: .88%
      10/03/11 Natural Increase
    • 10/03/11
    • 10/03/11
    • 10/03/11
    • Population Stats
      • Total Fertility Rate
        • the number of children born to women of child bearing age
        • 15-45 ??
        • 2.1
      10/03/11 Lowest Fertility Rates Worldwide
    • 10/03/11
    • 10/03/11
    • Population Stats
      • Infant Mortality Rate
        • the number of children who die before they reach one year
        • US: 6.3/1000
      10/03/11
    • 10/03/11
    • 10/03/11
    • 10/03/11
    • Population Pyramids
      • Show age and sex distribution for a given region
        • County, city, country, state
      • Y axis shows age cohorts
        • Usually in intervals of 5
        • Ranging from 0-85
      • X axis shows females and males
        • Males on the left
        • Females always right
      10/03/11
    • Population Geography 10/03/11
    • Measuring Growth
      • Linear Growth
        • increases in a uniform amount during a series of equal time periods
      10/03/11
    • Measuring Growth
      • Exponential Growth
        • increases in a compounding amount over a series of equal time periods
      10/03/11
    • Measuring Growth
      • Doubling Time
        • the time it takes to double a country’s population
        • 70 / NIR = Doubling Time
      10/03/11
    • World Population Growth, in Billions 10/03/11 Number of years to add each billion (year) All of Human History (1800) 130 (1930) 30 (1960) 15 (1975) 12 (1987) 12 (1999) 14 (2013) 14 (2027) 21 (2048) Sources: First and second billion: Population Reference Bureau. Third through ninth billion: United Nations, World Population Prospects: The 2004 Revision (medium scenario), 2005. 1st Billion: 1800 years 2 nd Billion: 130 years 4 th Billion: 45 years 8 th Billion: 52 years
    • Measuring Growth
      • Population Explosion
        • refers to the rapid growth of the world’s population during the last century accompanied by ever shorter doubling times and accelerating rates of increase
      10/03/11
    • 10/03/11
    • Population Geography 10/03/11                                            
    • Population Geography 10/03/11                                            
    • Population Geography 10/03/11                                            
    • Population Geography 10/03/11                                            
    • Population Geography 10/03/11                                            
    • Population Geography 10/03/11                                            
    • Population Geography 10/03/11                                            
    • Population Geography 10/03/11 http://desip.igc.org/populationmaps.html                                            
    • Population Geography 10/03/11
    • Population Center of the US 10/03/11