GEOG 1HB3 Lecture Notes - Lecture 9: Thomas Robert Malthus, James Lovelock, Global Issue
22 Oct 2012
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Currently ~83 million births/year, only 1 million (1. 2%) of which occur in developed nations. Demography: the study of population (gr: demos populace, people, graphe to write about. Population geography: the study of the spatial components of demography (density, distribution, migration, etc. ) Why is population a global issue: 2. How has population changed over the six million years of human history: 3. How many people can the earth support, i. e. , what is the carrying capacity of the earth: the history of pop growth. Predictions of the future: 2030 8. 3 billion, 2050 9. 4 billion. Note: in 1970s, predictions for 2050 was approx 12 billion (vs. current prediction of 9. 4 billion) Significant increases associated with: first agricultural revolution (9000 years ago); industrial revolution (18th century); and green. Until population reached 6 billion, the rate of increase was increasing; since then, the rate of increase has decreased. Total world population continuous to increase, but at a decreasing rate: 2.
