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overpopulation definition human geography

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overpopulation definition human geography

According to Worldwatch Institute, if China and India were to consume as much resources per capita as the United States, in 2030 they would each require a full planet Earth to meet their needs. Projections indicate that most urban growth over the next 25 years will be in developing countries. He also argues that agricultural production of food could only grow arithmetically. [92][93][94][95], Humans have historically exploited the environment using the easiest, most accessible resources first. This suggests that Third World poverty and famine are caused by underdevelopment, not overpopulation. How to use Malthusian in a sentence. [145][146], Human population growth and overpopulation is connected to the growth and use of livestock and other animal population. Shea, Katherine M. "Antibiotic resistance: What is the impact of agricultural uses of antibiotics on children's health?." A large expansion of agriculture to provide growing populations with improved diets is likely to lead to further deforestation, loss of species, soil erosion, and pollution from pesticides and fertilizer runoff as farming intensifies and new land is brought into production. Population geography is a branch of human geography that is focused on the scientific study of people, their spatial distributions and density. Although plants produce 54 billion metric tons of carbohydrates per year, when the population is expected to grow to 9 billion by 2050, the plants may not be able to keep up (Biello). Further environmental impacts that overpopulation may cause include depletion of natural resources, especially fossil fuels. Animal Welfare Institute. By most estimates, at least half of cultivable land is already being farmed, and there are concerns that the remaining reserves are greatly overestimated.[209]. Dramatic growth beginning in 1950 (above 1.8% per year) coincided with greatly increased food production as a result of the industrialization of agriculture brought about by the Green Revolution. [87][88], Significant increases in human population occur whenever the birth rate exceeds the death rate for extended periods of time. This regularly contributes to environmental A country could cut its forests and deplete its fisheries, and this would show only as a positive gain to GDP, despite the loss of capital assets. There are also problems with location of arable land with regard to proximity to countries and relative population (Bashford 240). Religious organizations are also concerned with population growth; however, they focus on contraception issues and not strictly population growth. All of our environmental problems become easier to solve with fewer people, and harder – and ultimately impossible – to solve with ever more people. The depletion of these trophic levels allow the lower trophic level to overpopulate, or populate very rapidly. It is a theoretically perfect situation difficult to estimate or define. Many of the problems associated with overpopulation are explored in the dystopic science fiction film Soylent Green, where an overpopulated Earth suffers from food shortages, depleted resources and poverty and in the documentary Aftermath: Population Overload, which explores what would happen if the human population suddenly doubled in size. Geography is a significant factor in population distribution in relationship to wealth For example, the population tends to be lower in extreme environments such as arid climates, rainforests, polar or mountainous regions. New Population Projections Shatter Earlier Estimates", The Millennial Project: Colonizing the Galaxy in Eight Easy Steps, "StarTram2010: Maglev Launch: Ultra Low Cost Ultra High Volume Access to Space for Cargo and Humans", "UN Habitat calling urban living 'a good thing", "National Geographic Magazine; Special report 2008: Changing Climate (Village Green-article by Michelle Nijhuis)", "UN Habitat calling to rethink urban planning", "David Suzuki fires off from the 'death zone' at Trudeau, Weaver and a broken system", "Urbanization: An Environmental Force to be Reckoned With", Life on the Brink: Environmentalists Confront Overpopulation, "Can a collapse of global civilization be avoided? and Huesemann, J.A. "The intervention can be widespread and done at a low cost. In 2000–2005, net migration in 28 countries either prevented, This page was last edited on 3 December 2020, at 20:57. Technological Prospects and Population Trends. The habitat cannot support these numbers over time without hurting itself. Accelerated Habitat Loss. [210][211] Some scientists have said that in the future, densely populated cities will use vertical farming to grow food inside skyscrapers. All of these things have economic and environmental costs that we must consider. [208] The development of energy sources may also require large areas, for example, the building of hydroelectric dams. However, as new data has become available, it has been observed that after a certain level of development (HDI equal to 0.86 or higher) the fertility increases again and is often represented as a "J" shape. Over time ecumene has increased slightly. Some solutions are to be applied on a global planetary level (e.g., via UN resolutions), while some on a country or state government organization level, and some on a family or an individual level. The Story Of... Smallpox – and other Deadly Eurasian Germs, Stacy Goodling, "Effects of European Diseases on the Inhabitants of the New World", "United Nations, United Nations, Department of Economic and Social Affairs, Population Division (2011): World Population Prospects: The 2010 Revision", "Provisional Population Totals – Census 2011", "The Environmental Challenges in Sub Saharan Africa". Malthus suggested that the world’s population was growing faster than the rate of food production, and as a result, mass starvation would occur. Modern usage of the term "lebensraum" supports the idea that overpopulation may promote warfare through fear of resource scarcity and increasing numbers of youth lacking the opportunity to engage in peaceful employment (the youth bulge theory). [178] Limitations on how much of these materials is available could even mean that some technologies are not worth pursuing long term.... "Virgin stocks of several metals appear inadequate to sustain the modern 'developed world' quality of life for all of Earth's people under contemporary technology".[179]. One notable figure is Paul Ehrlich. [107] This was, subsequent to the Green Revolution, followed by even more severely accelerated population growth, which continues today. Every element of the definition is open to interpretation. 15 (2002): 321. Preview this quiz on Quizizz. [178] A handful of geologists around the world have calculated the costs of new technologies in terms of the materials they use and the implications of their spreading to the developing world. These problems have caused a slowdown and a leveling-off of food production in many regions of the world. [68] Europeans introduced diseases alien to the indigenous people, therefore they did not have immunity to these foreign diseases. Today, starvation is caused by economic and political forces rather than a lack of the means to produce food. 2.There is a process of absorption, whereby people immediately surrounding a rapidly growing town move into it and the gaps they leave are filled by migrants from more distant areas, and so on until the attractive force [pull factors] is spent.3.There is a process of dispersion, which is the inverse of absorption.

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