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Download Human Effect on Land Use
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Human Effect: Land Use Urbanization • Physical growth of urban areas as result of rural migration • Currently more people living in urban areas than rural areas (first time in history) Urbanization Environmental Effects • Heat Islands – solar radiation reflected by buildings, asphalt, etc • Makes location hotter than surrounding areas • Extra solar radiation not being used (plants, water, etc) Urbanization Environmental Effects • More people = more waste/trash • Less plant life to clean air (increase air pollution) • Acid rain – Decrease in pH of rain due to pollution Urbanization Environmental Effects • Increase of impermeable surfaces • Water and other materials cannot pass through • Leads to increased run off and flooding Deforestation The removal of forests (rain, deciduous, etc.) • • • • Less C pulled from atmosphere Less oxygen produced Increase water runoff!! Decrease in biological diversity • Bio-diversity down 30% in past 40 years Deforestation Agriculture Growing resources on land • Increase population = increase agriculture • Depletion of water (ground/surface) • Salinization – build up of salts in soil; becomes useless to plants Effects on Shorelines Increased population = increased development • Decrease vegetation = decrease stability • Human activity/recreation increases erosion (wind/water/etc) • Dunes/barriers to help Effects on Mountainsides • Increase development = decrease in vegetation → increase in erosion • Decrease in stability • (rockfalls, rockslides, mudslides, mudflows) Effects on Mountainsides • Efforts to stabilize slopes • Retaining walls/barriers • Vegetation • Rocks
