Two-fifths of the world's people live in Southeast Asia.
Demography is an interdisciplinary study of population, the beginnings of which are dated roughly from the time of Thomas Robert Malthus's 1798 published work on population theory. Today, demographic statistics are used by historians, anthropologists, government officials, sociologists, economists and numerous other scientists and researchers from pharmacologists to geophysicists studying climate change. Agricultural density is one of several statistical factors calculated in the field of demography.
Identification
Density in demographics refers to how full something is, or the amount per unit size. In using the American standard for measuring land--the acre--the population density (also called the arithmetic or crude density), for the United States can be determined by dividing the total number of land acres in the country by the number of people living in the nation. A simple formula for this is: population density equals the population divided by number of acres in the land area.
Features
Agricultural density is measured in a similar manner to population density. Agricultural density is found by dividing the total rural population, or more specifically, the number of farmers in a given area, by the amount of agricultural land within the same area. (Agricultural land refers to arable land, land which is suitable for growing crops). Thus, the simple formula: agricultural density equals the total number of farmers in a given area divided by amount of agricultural land within the area.
Significance
Two regions within the same country may have similar population densities but be on opposite ends of the spectrum in terms of agricultural density. This is often due to one region simply having a much higher percentage of arable land than the other. In situations where amounts of arable land are similar, disparities in agricultural density may be due to the use of intense farming methods in one area, where a small number of residents grow the majority of the crops from the given area.
Function
An additional population statistic frequently used by analysts in conjunction with the measure of agricultural density is physiological density. This statistic is measured by dividing the amount of arable land in a given area by the total population of the given area, which determines how many people a unit of land (an acre in the United States), must support for the area to be self-sustaining in terms of food production.
Considerations
Determinant factors to be considered in analyzing agricultural density include comparisons between the percentage of the population that participates in subsistence agriculture as opposed to commercial agriculture operations within the given area. In addition, economic factors, the infrastructure, soil quality, available technology, climatic conditions, such as average rainfall, and a number of other variables play significant roles in data analysis and interpretation of demography statistics related to the agricultural and physiological densities of a given population.
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