GEOG 122 Lecture Notes - Lecture 20: Demographic Transition, Population Ageing
Document Summary
Countries needed to conscribe men to ight for them. Such rates of growth are not sustainable: at mid-1970s growth, we enter the world of science iction with the world population doubling every 35 years. It would grow x 100000 every 700 years: in less than 1200 years: The population crisis was a paramount global concern of the. 1970s just as the environmental crisis/global warming is today. The rise of zpg and pop"n planning a necessity. The weight of people would exceed the weight of the earth itself. But now some relief, with global drips in fertility. Would pop"n expected to reach equilibrium of 10-11 billion or less, perhaps as early as 2150. That"s still a big jump from 7 billion, especially where repaid growth continues: there are mark spatial diference in population change. There are countries in the world where the growth rate is negative. Eastern europe: countries with low immigration rate, fertility rate is also low.
