Urban Ecosystems
Urban Ecosystems. Urban Ecosystems -cities are engineered ecosystems so they have many differences from natural ecosystems. Urban Ecosystems. Urban Ecosystems. Urban Ecosystems. Urban Ecosystems. Urban Ecosystems. Urban Ecosystems. Urban Ecosystems. Urban Ecosystems Greener Cities.
Urban Ecosystems
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Presentation Transcript
Urban Ecosystems -cities are engineered ecosystems so they have many differences from natural ecosystems
Urban Ecosystems Greener Cities
Urban Ecosystems Greener Cities: creating urban areas that are more sustainable -require less from outside e.g.
Urban Ecosystems Greener Cities: creating urban areas that are more sustainable -require less from outside e.g. reducing import from outside -vegetable gardens -composting -rainwater collection -high density housing
Urban Ecosystems Greener Cities: creating urban areas that are more sustainable -require less from outside e.g. reducing export to outside -composting -recycling -reusing building supplies -energy efficiency
Urban Ecosystems How green a city is can be summed up by measuring its ecological footprint
Urban Ecosystems How green a city is can be summed up by measuring its ecological footprint Ecological Footprint: a measure of the land area required to sustain a given population of humans
Urban Ecosystems How green a city is can be summed up by measuring its ecological footprint Ecological Footprint: a measure of the land area required to sustain a given population of humans e.g. India: people require little more than the area of their own country to sustain the entire population
Urban Ecosystems How green a city is can be summed up by measuring its ecological footprint Ecological Footprint: a measure of the land area required to sustain a given population of humans e.g. India: people require little more than the area of their own country to sustain the entire population USA: requires 3 entire Earths to sustain the population