Theories of population

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Theories of population

  1. 1. Bimal Antony &Chinnu Jaison1st MSWSchool of Social Work
  2. 2. Population is the collection of people or organisms of aparticular species living in a given geographic area.Population growth is the increase in the number ofmembers of a population over a given time. A typical timeframe for calculating growth is yearly.
  3. 3. MalthusModern Theory of PopulationCornucopianBogueCattonBoserupClub of Rome
  4. 4. Definition:A cornucopian Is someone who believes that continuedprogress and provision of material items for mankind canbe met by advances in technology.
  5. 5. They believe that there is enough matter andenergy on the Earth to support the peaking growthof the populationThey believe that outer-space will give humanityalmost unlimited room for growth.There is no historical evidence that society will runout of resources.Faith in the human ability to find technologicalinnovations to carry the increased capacity of thehuman population.
  6. 6. The population grows only in response to theEarth’s ability to support a larger population.Over time, society naturally limits or increases itspopulationTheory of demographic regulation
  7. 7. Is an expansion on the Malthus viewPhantom Carrying Capacity: is when the populationis using non-renewable resources that while theysustain the current generation, will not be enoughfor the next to survive.This is directly related to the Overshoot theory.William Catton believes that Earth’s carry capacityhas exceeded at the expense of environmentaldamage.
  8. 8. An overshoot conditionoccurs when thepopulation growth rateexceeds the planetscarrying capacity. At thispoint, the populationwill start to die out andeventually even out withthe carrying capacityagain.The biggest problemwith this situation is thatthe actual carryingcapacity will besignificantly decreaseddue to the planetsenvironmental damage.
  9. 9. Population growth has enabled agriculturaldevelopment to occurPeople will find ways to increase the production of foodby increasing workforce, machinery, fertilizers, etc.Fertility of land will be maintained when population islowChanges in technology helped in developing high yieldcrops
  10. 10. Founded in April 1968 by Aurelio Peccei, an Italianscholar and industrialist, and Alexander King, aScottish scientistPublished the book ‘The Limits to Growth’ in 1972If present growth trends in the world continue, thelimits to growth on this planet will be reachedsometime in the next 100 yearsThe result will be sudden and uncontrollabledecline in both population and industrial capacity
  11. 11. htttp://www.wikipedia.orghttp://www.ucmp.berkeley.eduhttp://www.energybulletin.net/node/4735http://home.ica.net/~drw/pop13a.htmhttp://www.slideshare.net/HNurton/population-theories

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