Human Geography - Black Folder

Human Geography - Black Folder

1. Population ecology

   • Factors which increase and decrease (oscillate the population)
     • Managing that human population is like imagining deer/rabbit population
   • Standard of living = (natural resources X technology) / population
     • PRP model shows how people interact with the environment
       • PRP Model - population, resources and pollution model
       • Links to carrying capacity of the country due to positive feedback
         • Carrying capacity = the maximum population size that an area or environment can sustain indefinitely (dependent on level of technology and intelligence of government)
           • If we all consumed as many resources as the US we would need four planets
           • Total productive bio capacity / total population = global hectares (gha) available per person
             • gThe people of easter island will not be able to work out where the statues came from and this will change the place meaning of the and this would mean that the place meaning has dramatically changed
               • This could also be due to the rise of technology and this is because the way that the land is used is changed and therefore the people who live there will have changed opinions on the place
           • Negative environmental implications of growing ecological footprints include
             • Climate change, exacarbonation of global warming
             • More land taken from settlements, industry and transport
             • Degredation of natural ecosystems (eg. 10% of coral reefs are already degraded beyond recovery)
             • Increased threat of species extinctions
             • Over cultivation and overgrazing and reducing land and soil quality
             • Depletion of fish stocks beyond recovery
       • People take resources from the environment which will change the environment such as wood, biomass, fossil fuels and water
         • We are disrupting biotic and abiotic processes
       • The activities of removal and obtaining the resources cause pollution such as air pollution and actd rain
   • Ozone depletion
     • Ozone depletion has no link to climate change. it is due to the emission of CFC's
       • The hole in the ozone Antarctica is linked to skin cancer and cataracts
         • Cataracts - lens in your eye gets cloudy. People are living much longer and therefore it is much more common

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