Geography
Physiological Population Density
Physiological population density refers to the number of people per unit of arable land. It takes into account the carrying capacity of the land and the resources available to support the population. This measure provides a more accurate understanding of population distribution and pressure on resources than simply looking at the total population.
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4 Key excerpts on "Physiological Population Density"
eBook - PDF- Julieta Arjona Sumague(Author)
- 2020(Publication Date)
- Society Publishing(Publisher)
Events such as floods, fire, and disease have a greater chance of killing all the people who are living in the small population area. On the other hand, it has been observed their large populations experience their own difficulties. As they these populations approach the maximum sustainable population size, called as carrying capacity, large populations depict characteristic behavior. As the populations approach their carrying capacity, they experience a greater competition for resources, shifts in predator-prey relationships, and lowered fecundity. The population may begin to exceed the carrying capacity of the environment and destroy the available habitat if the population grows too large. Communicative English Language Skills 190 5.1.2. Population Density Population density is related to the number of individuals and the space that is inhabited by them. The concept on density of population is most revealing and it is a helpful tool in the analysis of the diversity of the distribution of man in space (Clarke, 1972). Population distribution and densities of population are very closely associated to each other. Population analysis is defined as part and parcel of any regional study. This is so because population is one of the greatest of all the resources. Also, it is an important component of all regional geography, although the regional studies that were carried out in the past involved a detailed examination of demographic influences as well as effects. It is not possible to evaluate the social as well as economic evolution of any region without the serious consideration of such aspects. Density and size of population are the basic issues and their differences are of primary concern to all the population geographers. The main concern of the geographer is to describe this variation with respect to the physical, economic, social, political, and historical factors as an inter-related impact (Clarke, 1976).
eBook - PDF- Rodolfo B. Valdenarro(Author)
- 2019(Publication Date)
- Delve Publishing(Publisher)
With the beginning of more-sophisticated approaches, in specific those connected to GIS or remote sensing, and the ever-increasing accessibility of data at numerous spatial scales, the fundamental significance of space and geography has become more common in in the studies of the population beyond the social sciences. This development is deceptive in the expansion of a multidisciplinary subfield which is known as spatial demography that is neither outdated population geography nor classic demography. 6.7. IMPORTANT ASPECTS OF POPULATION GEOG-RAPHY The density of the population is closely connected to population distribution. This is considered as another topic in population geography. Population density studies about the average number of the individuals in the region Applied Human Geography 130 by dividing the number of the individuals present by the entire region. Generally, these numbers are given as individuals for each square kilometer or mile. There are various numbers of aspects which have the influence on the density of the population, and these are often subjects of the studies of the population geographers as well. Such type of aspects can narrate to the physical environment such as the climatic conditions and topography or be connected to the societal, economic and radical environments of the region. For instance, the regions with harsh climatic conditions such as California’s Death Valley area are sparsely occupied. In contrary to it, Tokyo and Singapore are compactly occupied because of their mild climatic conditions and their financial, societal and radical development. The entire growth of the population and the variation is another area of significance for population geographers. This is because the population of the world has increased intensely over the last two centuries. In order to study this complete subject, the growth of the population is looked at through natural rise. This studies the birth rates as well as the death rates of the region.
eBook - PDF- R. Knowles, J. Wareing(Authors)
- 2014(Publication Date)
- Made Simple(Publisher)
Measures of Population Density and Distribution So far in this chapter the terms density and distribution have been used without definition, but, in fact, they do have precise and different meanings. Distribution refers to the actual pattern of spacing of units or individuals; density, on the other hand, is an expression of the ratio between total popula-tion and land area. Measures of Population Density Crude population density is a measure of the average number of individuals per unit area. For example, the UK has an average population density of 232 persons per square kilometre. As an average figure it suffers from all the limitations that this implies. A crude population density figure provides no information about extreme values within a territory, and comparisons of density figures are meaningful only for small areal units such as parishes and communes, but not for large units such as nations or continents. A crude density figure alone can never be used as an index of overpopulation. Because of these limitations, various refinements of crude population density are sometimes employed. For example, densities can be calculated for in-habited or cultivated areas only rather than for 'gross' area. The latter is known as a physiological or nutritional density. Conversely, the density of certain sectors of the population can be calculated against total area. For example, it may be of interest to have a density figure for the industrial or Population Distribution 61 agrarian sections of the population. The latter is referred to as an agricultural density. In urban areas where high-rise blocks of flats invalidate simple rela-tionships between population and area, room density, or average number of persons per room, provides an index widely used by planners and sociologists. Measures of Centrality, Dispersion and Concentration of Populations Various techniques have been developed to express the central tendency of populations.
eBook - PDF- Joseph P. Stoltman(Author)
- 2011(Publication Date)
- SAGE Publications, Inc(Publisher)
The natural environment affected where humans decided to live, what they ate, and how their econo- mies were structured. During the past several decades of the 20th century, however, geographers often treated the human and physical components as separate halves of one disci- pline, with few linkages. By the end of the 20th century and the first decade of the 21st century, there was increased recognition that geographers must apply the holistic power of the discipline to link the physical and human elements of Earth and provide explanations and propose solutions to persistent issues. This has, in many ways, benefited popula- tion geography, which forms a useful link between the natu- ral and human sides of the discipline. Population geography has traditionally been considered one of the main areas of human geography, related closely to urban and economic geography. A good deal has been written to define population geography and its role in the discipline (Boyle, 2003; Findlay & Graham, 1991; Graham, 2000; Graham & Boyle, 2001). Although population geog- raphy can be said to deal with all spatially varying aspects of human demographic behavior and characteristics, it is on the topic of migrations that academic research in geog- raphy has had perhaps its greatest impact. There are three demographic phenomena that affect the size of a population in any location: fertility, mortality, and migration. Of these "demographic components of change," the only one that is unavoidably spatial in nature is migra- tion. That is, in order to move or migrate, a person must necessarily go from Place A to Place B, making the char- acteristics, or geography, of both A and B and the distance between them of central relevance to understanding who is moving and why. With fertility or mortality, in compari- son, the research value tends to be in the spatial patterns based on the rates of change.
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