Population Geography Demography – the statistical study of human populations

Graph Source: www.census.gov & www.wikipedia.org At that time there were probably about 1 million humans on Earth Graph Source: www.census.gov & www.wikipedia.org

Graph Source: www.census.gov & www.wikipedia.org When Darwin published On the Origin of Species there were 1 billion humans Graph Source: www.census.gov & www.wikipedia.org

When I was born there were 3.6 billion humans Graph Source: www.census.gov & www.wikipedia.org

WHERE ARE THE PEOPLE DISTRIBUTED? Densely Population Areas East Asia South Asia Southeast Asia Europe North America Sparsely Population Areas arid lands tropical rainforests highlands high latitudes(coldlands)

Total Fertility Rate - the average number of children a women will have in her childbearing years. This rate varies from just over 1 (Japan, Italy) to around 7 (Niger, Mali). The U.S. rate is 2. Palestinian Territories Fertility Rate 1975-1980 7.39 1980-1985 7.00 1985-1990 6.43 1990-1995 6.46 1995-2000 5.99 2000-2005 5.57 2.1 is generally regarded as the replacement rate (the rate at which a population neither grows nor shrinks) in the developed world. In less developed countries this rate should be higher to account for so many children not reaching childbearing age. U.K. Total fertility rate 1975-1980 1.72 1980-1985 1.80 1985-1990 1.81 1990-1995 1.78 1995-2000 1.70 2000-2005 1.66 Africa Fertility Rate 1975-1980 6.60 1980-1985 6.45 1985-1990 6.11 1990-1995 5.67 1995-2000 5.26 2000-2005 4.97

Doubling Time How long will it take for a population of a given area to double in size? Divide 70 by the annual population natural increase rate and you find the doubling time. World = 58 Sub-Saharan Africa = 30 Uganda = 20 years Costa Rica = 80 U.S.A. = 128 years Denmark = 333 years Russia = ? Japan = ? Source: National Geographic Magazine Example: Bangladesh 70 / R.N.I. => 70/2.09 = 33.5 years Bangladesh with a population of 144.3 million people in 2005 will have approximately 288.6 million people in 2038, if the population continues to grow at current rates.

Demographic Transition Model Demographic transition occurs in societies that transition from high birth rates and high death rates to low birth rates and low death rates as part of the economic development of a country from a pre-industrial to an industrialized economy. Usually it is described through the "Demographic Transition Model" (DTM) that describes the population changes over time.

Demographic Transition Model Demographic transition occurs in societies that transition from high birth rates and high death rates to low birth rates and low death rates as part of the economic development of a country from a pre-industrial to an industrialized economy. Usually it is described through the "Demographic Transition Model" (DTM) that describes the population changes over time.

Demographic Transition Model

Population Pyramids 1

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Analysis of Italy’s Population Pyramid 1. Decline in Birth Rate 2. Baby Boom 3. Fewer men due to World War I and II 4. More women due to: a. longer life expectancy and b. World Wars (I and II) 5. More 75-79 yrs than 0-4 yrs. Signs of a future worker shortage and an overall declining population. 1

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Mammoni: “Mama’s Boy” http://marketplace.publicradio.org/display/web/2007/11/22/why_italian_men_wont_leave_the_nest/# 1

Extremely High Birth and Death Rates 1

Persistent Poverty and Violence http://www.islamic-relief.com/submenu/appeal/somalia_crisis.htm http://www.biyokulule.com/February_%201990s(4).htm 1

Stable Population Growth 1

Post War Baby Boom and Declining Birth Rate 1

http://kotaku.com/gaming/only-in-japan/strange-japanese-game-center-name-226261.php http://www.economist.com/world/displaystory.cfm?story_id=9539825 1

What factors influence population distribution? Environmental factors-- What type of natural resources are in the area? Does it have oil, or arable land or access to water? What is the climate like? Does it have capital resources such as transportation and technology?

Economic factors-- Political factors-- What is the economic development like? What are the resources like? Political factors-- What is the government policy? Are there many conflicts? Is it a rural/urban area?

What are the characteristics of human populations? Birth and Death rates- How many people per 1000 are born or die in a year? Age Distribution-- How many people are in each age category?

Male/Female distribution-- Are there more males or more females? Why? Life Expectancy-- How old can you expect to live? Infant Mortality-- How many children die before their second birthday?

Urban /Rural-- GDP-- Ethnicity-- Where do most people live? In the city/country? GDP-- Is the country’s GDP high or low? Ethnicity-- Does the population have one dominate ethnicity or many and do they get along?

Language-- Do the people speak one language or do they have multiple languages? Religion-- Do the people share the same religion or do they have multiple ones? Education-- Are the people highly educated?

What factors influence population growth rates? Does the country have modern medicine and hygiene practices? What is the level of the average education? Is the country industrialized and do the people live in urban areas?

What is the level of economic development What is the level of economic development? Does the country have a primary, secondary, or tertiary economy? What is the government’s policy toward growth? Are there any restrictions? What role do women play in the society?

Push factors of immigration Push factors are factors which force people to move. Overproduction religious persecution lack of job opportunities agricultural decline conflict

Political persecution Natural hazards--droughts, floods, famines, volcanic eruptions Limits on personal freedom environmental degradation (decline)

Pull factors of immigration Pull factors attract people to an area Religion Economic opportunity Land availability Political freedom

Ethnic and family ties Arable land

What is the impact of migration on regions? Language--multiple languages Religion and religious freedom Customs/traditions--exchanged Cultural landscape--diffusion Diffusion--is the spreading of ideas and traits

What is some evidence of cultural interaction? The spreading (diffusion) of US culture to other regions of the world popularization of other cultures’ traditions in the US

Spatial Divisions as Forces of Conflict and Cooperation Spatial divisions are regions of the Earth’s surface over which groups of people establish social, economic and political control. Spatial divisions may generate conflict and/or cooperation.

Examples of Spatial Divisions Neighborhoods

School districts

Cities and Counties

Election Districts

Regional Districts

States

Reasons for Spatial Divisions Why are spatial divisions necessary at the local and regional levels? 1) Desire for government to be closer to home; 2) need to solve local problems and 3) need to administer resources more efficiently

How do spatial systems generate conflict? Reasons for Conflict How do spatial systems generate conflict? 1) Citizens may argue over boundaries; 2) Citizens may have low tolerance for different cultures;

3) Citizens may fight/compete over scarce resources and 4) Citizens and/or politicians may try to gain political advantage

Political Advantage? Yes, spatial divisions can be created in order to manipulate an electoral area, usually by altering the boundaries. This is known as gerrymandering. This is done to gain an unfair political advantage in an election.

Reasons for Cooperation 1) Natural disasters 2) Economic advantages (attracts new businesses) 3) Cultural similarities—ethnic backgrounds 4) Addressing regional issues like waste management, magnet schools and transportation.

Patterns of urban development occur according to site and situation. Urbanization, or the growing of cities, was triggered by industrialization. Patterns of urban development occur according to site and situation.

Site is the actual location of a city. Site and situation Site and situation are important geographic concepts when studying the growth of cities. Site is the actual location of a city.

Situation is another name for relative location—the location of a city with respect to other geographic features, regions, resources, and transport routes.

Harbor Sites: NY City, Alexandria, Egypt; Istanbul Turkey Island sites: Paris, Hong Kong, Singapore Fall line sites: Richmond, VA Confluence sites: Khartoum, Sudan; Pittsburg, PA

Hilltop sites: Rome, Athens, Jerusalem Oasis Sites: Damascus, Syria Sites where rivers narrow: London, Quebec City

Istanbul—Command of straits and land bridge to Europe Situation Istanbul—Command of straits and land bridge to Europe Mecca, Saudi Arabia; Varanasi (Benares), India—Focal point of pilgrimage Samarkand, Uzbekistan; Xi’an, China; Timbuktu, Mali; Singapore—Cities that grew up around trade routes

Capetown, S.Africa—Supply station for ships Omaha, Nebraska; Sacramento, California—Cities that grew up along the U.S. Transcontinental railroad Novosibirsk,Vladivostok-Cities that grew up along the Trans-Siberian Railroad

Functions of towns and cities Security and defense Religious centers Trade centers (local and long distance Governmental administration Manufacturing centers Service centers

Examples of a city changing functions over time Rio de Janeiro—was the capital but now is a tourist attraction (Brasilia) Pittsburgh, Pennsylvania—early function was for frontier defense, then shifted to steel manufacturing, and now is the home to many diverse services

New York City—has changed from a center of coastal and transatlantic trade to a center for the Great Lakes and Erie canal region to worldwide trade and finances Mining towns– once the resources were gone, many towns became “ghost towns”

What influence do urban areas have on their region and country? They are the home to monuments which help bring pride and develop nation-building. They are transportation and communication centers. They are natural attractions for immigrants.

They are the seed beds for new ideas and technologies. Their diversity helps lead to creativity in the arts. Many are the home to major Universities which provide educational opportunities.

They are the headquarters and regional outposts of major corporations. The major media outlets have their centers there (newspapers, radio, and television).

What problems are associated with growth of urban areas? Transportation problems, especially since the automobile. Rich and poor neighborhoods are usually isolated from one another. As overcrowding occurs, providing essential services (water, sewage, electricity) is a problem.

Air, water, and noise pollution Sprawl (spreading) of urban areas takes agricultural land out of production. Rapid migration results in “shantytowns” on the edge of Latin American, Asian, and African cities.

In developing countries, major cities are more connected to the outside world than to less developed regions in their own countries