The Urban World Chapter 9. 2 Men and a ? Why are people moving to urban areas?

The Urban World

Chapter 9

2 Men and a ?

Why are people moving to urban areas?

Urban Migration

1800 – 3% Urban1900 – 14% Urban / 12 cities with 1million people1950 – 30% Urban / 83 cities with 1million people2007 – 50% Urban / 400 cities & 19 with over 10million2050 – 70% UrbanUrban = in U.S. any place with more than 2,500 people

First Urban Revolution - 8000 to 2000 BC

History of Urban Revolutions

Population and Urbanization

Urbanization Trends in US

What is a Megalopolis?

Urbanization Pros & Cons?

1. Age Structure2. Greater Number of Men3. Poverty & Homeless People4. Crime Rates5. Pollution6. Transportation7. Infrastructure8. Immigrants

P.O.E.T

Population OrganizationEnvironmentTechnology

The Ecology of a City=

Elements of an Ecosystem

Urban Problems1. Land Use Patterns - sprawl or type of development2. Traditional Land Loss3. Flooding - location4. Brownfields - industrial waste5. Home Waste - disposal6. Sewage Treatment - 2/3 untreated in developing nations

cities7. Commute Times8. Urban Heat Islands9. Pollution - water (sewage), air (ground ozone & Energy

Production), noise (traffic & agriculture)

1. Land Use - Georgia

1. Zoning

2. Land Use- Agricultural Loss

3. Flooding

3. Flooding

4. Brownfields

Atlanta also has over 950 Brownfield sites within its boundaries.

Atlantic Station was built on the site of the old Atlantic Steel Mill. From 1901 through 1997, the Atlantic Steel Mill operated, employing as many as 2000 people. Today, Atlantic Station is known as the largest urban brown field redevelopment in the nation.

5. Sewage in Atlanta

A 19-square mile area of Atlanta, with Downtown as its center, is served by a combined sewer system.

In a combined system, a single large sewer pipe carries both sewage and stormwater to a water reclamation center for treatment.

Neighbors and available land for solid waste?

7. Commute Times

8. Atlanta’s Heat Island & Sprawl

Impacts:Hotter = greater energy consumptionRunoff = increased

9. Pollution

Every unit has something on this topic