Population growth is the change in a population over time, and can be quantified as the change in the number of individuals of any species in a population using "per unit time" for measurement. In biology, the term population growth is likely to refer to any known organism, but this article deals mostly with the application of the term to human populations in demography.
In demography, population growth is used informally for the more specific term population growth rate (see below), and is often used to refer specifically to the growth of the human population of the world.
Simple models of population growth include the Malthusian Growth Model and the logistic model.
Population growth 1800-2011: from 1 billion to 7 billion estimated in 31.10.2011. During the year 2011, according to estimates:
- 135 million people were born
- 57 million people died
- 78 million people increased the world population.
Other articles related to "population growth, population, growth":
... According to UN's 2010 revision to its population projections, world population will peak at 10.1bn in 2100 compared to 7bn in 2011 ... According to these forecasters, population growth will be only sustained till the 2040s by rising longevity but will peak below 9bn by 2050 ...
... By 1100, the civilian population within the city walls was 1,050,000 the army stationed there brought the total to 1.4 million ... as the lower Yangzi's "grain basket." During the 13th century, the city's population soared to approximately a million people, with the 1270 census counting 186,330 ... rich as areas like western Sichuan, the region of Fujian also underwent a massive population growth government records indicate a 1500% increase in the number of registered households from ...
... This, combined with the buffered population growth that is a product of a long-lived seed bank, showed that a temporal storage effect was probably an important factor in mediating ... of inflorescences (a proxy for fitness) instead of actual population growth rate ... (calculated from size and species-specific growth rate), and found that recruitment of young trees varies from year to year ...
... In 1953, according to the first population census, Lhasa numbered about 30,000 residents, including 4,000 beggars and not counting the 15,000 monks ... By 1992, Lhasa's permanent population was estimated at a little under 140,000 people, including 96,431 Tibetans, 40,387 Han Chinese and 2,998 sundry ...
1 led to a rapid population boom in Alberta. 3 well aided provincial growth as the derrick collapse and resulting inferno made international headlines and alerted the world to Alberta's oil strikes ... Alberta's population in 1946 was 803,000, compared to neighbouring Saskatchewan's total of 833,000 ...
Famous quotes containing the words growth and/or population:
“Every child has an inner timetable for growtha pattern unique to him. . . . Growth is not steady, forward, upward progression. It is instead a switchback trail; three steps forward, two back, one around the bushes, and a few simply standing, before another forward leap.”
—Dorothy Corkville Briggs (20th century)
“O for a man who is a man, and, as my neighbor says, has a bone in his back which you cannot pass your hand through! Our statistics are at fault: the population has been returned too large. How many men are there to a square thousand miles in this country? Hardly one.”
—Henry David Thoreau (18171862)