5.10 impacts of urbanization

urbanization

removing vegetation to convert natural landscape to city

urbanization impact

replaces soil, vegetations, wetlands w impervious surfaces which doesn’t allow water to infiltrate thru

co2 emissions: cement production, construction machinery, deforestation, landfills needed for disposing trash of big pop.

urbanization prevents groundwater___

recharge, causing precipitation to runoff into local bodies of water

urbanization in coastal cities

pop. growth in coastal cities lead to saltwater intrusion

saltwater intrusion cause

excess groundwater withdrawal (not replenished very quickly), therefore depletion in the water table, which allows for salt water to fill in the area that used to be freshwater

sea levels rise

due to warming of ocean and melting of ice caps can contaminate freshwater w salt

trends of pop.

overall in US/ other nations = moving toward cities/urban

rural to urban for jobs, ent, cultural att.

urban areas more densely pop. minimizing drinking and land use per person (decreases env. impact per person)

highest growth currently suburbs

urban sprawl

pop movement out of dense, urban areas to less dense

urban sprawl causes

cheaper property, cars make it easy to get to one place to another, domino effect (neighbors leave so you leave)

expanded highways make travel easier and increases driving

increased in driving= increase fuel tax revenue which is used to build more highways

highway expansion makes it easier to commute from suburbs into urban areas

urban sprawl effects

fewer residents in cities lead to decline in tax revenue for city, residents leave so businesses follow, abandoned homes + businesses create BLIGHT so more ppl leave

urban sprawl solution

urban growth boundaries: zoning laws set by cities preventing development beyond a certain boundary

public transport and walkable cities designs that attract ppl to stay

mixed land use: residential, business, and entertainment buildings all located in the same area of a city

enables walk ability and sense of place