Impacts of Farming

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Impacts of farming systems on the environment. Concentrates on intensive plant production and slash and burn farming

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  • Impacts of Farming

    1. 1. Topic 3: Human population, carrying capacity and resource use 3.5: Food Resources 3.5.3: Impacts of Farming Systems Farming Systems
    2. 2. Topic 3: Human population, carrying capacity and resource use 3.5: Food Resources 3.5.3: Impacts of Farming Systems • All agriculture exerts a set of impacts upon the environment • These impacts result from inputs of energy and materials into the system, processes within the system as well as outputs from the system.
    3. 3. Topic 3: Human population, carrying capacity and resource use 3.5: Food Resources 3.5.3: Impacts of Farming Systems • Technocentric Modern farming techniques are seen to be less environmentally friendly than traditional farming methods
    4. 4. Topic 3: Human population, carrying capacity and resource use 3.5: Food Resources 3.5.3: Impacts of Farming Systems Cases Studies Comparing Farming Systems
    5. 5. Topic 3: Human population, carrying capacity and resource use 3.5: Food Resources 3.5.3: Impacts of Farming Systems Intensive Plant Production • Tend to be monocultures of selectively breed strains • Extensive inputs of Chemical fertilisers and pesticides • Indoor growing under glass using in temperature controlled conditions • Extensive use of machinery
    6. 6. Topic 3: Human population, carrying capacity and resource use 3.5: Food Resources 3.5.3: Impacts of Farming Systems Intensive Plant Production http://aboutenvironment.wordpress.com/ http://www.valcogreenhouse.com/en/cooling/greenhouse-fogging
    7. 7. Topic 3: Human population, carrying capacity and resource use 3.5: Food Resources 3.5.3: Impacts of Farming Systems Intensive Plant Production • Habitat loss as hedges and woodlands are removed to make bigger fields • bioaccumulation of toxins from pesticides up the food chain • Eutrophication through over use of chemical fertilisers • Soil erosion as biomass is continually removed
    8. 8. Topic 3: Human population, carrying capacity and resource use 3.5: Food Resources 3.5.3: Impacts of Farming Systems Intensive Plant Production http://www.woodlandtrust.org.uk/en/campaigns/planning- http://www.okstate.edu/artsci/botany/bisc3034/lnotes/ reform/northern-ireland/Pages/woodland.aspx agroeco.htm
    9. 9. Topic 3: Human population, carrying capacity and resource use 3.5: Food Resources 3.5.3: Impacts of Farming Systems Slash and Burn Farming • A small area of land cleared usually to be used by one family • Cutting vegetation then burning it on site adds nutrients from the ash • Area used for a short period of time • Growing of indigenous (native) plants
    10. 10. Topic 3: Human population, carrying capacity and resource use 3.5: Food Resources 3.5.3: Impacts of Farming Systems Slash and Burn Farming http://www.rainforestsaver.org/what-is-it-all-about/what-is- http://my.opera.com/terryyoder/blog/ slash-and-burn-farming/
    11. 11. Topic 3: Human population, carrying capacity and resource use 3.5: Food Resources 3.5.3: Impacts of Farming Systems Slash and Burn Farming • Allows small communities to survive where land is unproductive • Can cause erosion after burning when soil is exposed • When used by large communities leads to habitat loss • Original vegetation can quickly reestablish from secondary succession
    12. 12. Topic 3: Human population, carrying capacity and resource use 3.5: Food Resources 3.5.3: Impacts of Farming Systems Slash and Burn Farming http://www.environmentalgraffiti.com/ecology/save-the- http://recs-intl.com/08Photo_trail/mz/photo_mz_ang03.htm rainforest-by-eating-yogurt/120

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