Population Lecture handout

Population Lecture handout - Population: Overview History...

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Population: Overview History of world population growth Understanding population growth Measures of population Demographic Transition  Population Pyramid What is associated with rapid population growth?
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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 Growth, in Billions
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Thomas Malthus In 1798, he predicted human population  would increase exponentially (2,4,8,16,32) Food would not be able to increase at this  rate. Suggested “moral” restraint to limit  population growth.  
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Measures of Population New individuals can be added to populations by: Birth Immigration   Individuals can leave populations by:  Death Emigration   Birth rates and Death rates Stated per thousand persons in the population  Rates make it possible to compare countries that vary greatly in  terms of population size. 
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Measures of Population Birth rate (crude birth rate):  Annual number of births per  1,000 individuals in population. Annual births divided by total population X 1,000 Examples 250 births divided by 10,000 (pop) X 1,000 = birth rate of ____ 3,900 births divided by 155,000 (pop) X 1,000 = birth rate of ____ Death rate (crude death rate):  Annual number of deaths  per 1,000 individuals in population.  Annual deaths divided by total population X 1,000 Example : 150 deaths divided by 10,000 X 1,000 = death rate of ____
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This note was uploaded on 09/08/2010 for the course NUFS 139 at San Jose State University .

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Population Lecture handout - Population: Overview History...

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