GEOG 1200 Lecture Notes - Lecture 5: Ester Boserup, Malthusianism, Crop Rotation
Document Summary
The densest population clusters appear in two main types of natural environments: fertile rivers valleys of the tropics and subtropics, coastal plains of the mid latitudes. Four main population clusters: east asia (china, koreas, vietnam, japan, south asia (india, pakistan, bangladesh, western europe, north america (boston to washington d. c and the west coast) About 75% of the world"s population lives in these four areas. 40% live in just 2, east and south asia. Other small concentrations: java (main island of indonesia, nile valley, central mexico (2nd largest urban region in the world, soon to be #1, southeastern south america, nigeria and parts of west africa, factors in the world population. Population density: crude population density: number of people per unit area of land, physiologic population density: total number of people per unit area of arable (agriculturally productive) land. Population structure (relative number of men and women in different age cohorts of a population)
