Population density
Population density (people per km 2 ) of the world Population density (people per km 2 ) by country, 2006 Population density (people per km 2 ) map of the world in 1994. In relation to the equator it is seen that the vast majority of the human population lives in the Northern Hemisphere. Population density (people per km 2 ) map of the world in 1994 Deserts around the world. Compare with maps above. See also this image for location of densely populated areas (cities) in various vegetation zones. Population density (in agriculture: standing stock and standing crop) is a measurement of population per unit area or unit volume; it is a quantity of type number density. It is frequently applied to living organisms, and most of the time to humans. It is a key geographical term. [1] Contents 1 Biological population densities 1.1 By political boundaries 1.2 Other methods of measurement 2 See also 2.1 Lists of entities by population density 3 References 4 External links Biological popula