1. Chapter 10 Key Objectives 1.Understand past and current urban trends 2.Understand the pros and cons of rapid urban growth 3.See cities as an ecosystem 4.Understand zoning and its changing nature 5.Understand the impact of development 6.See the importance of infrastructure 7.Comprehend the role of planning 8.envision a sustainable city

2. Sustainable City 1."development that meets the needs of the present without compromising the ability of future generations to meet their own needs.” 1.A sustainable city, or eco-city is a city designed with consideration of environmental impact, inhabited by people dedicated to minimisation of required inputs of energy, water and food, and waste output of heat, air pollution - CO2, methane, and water pollution.... 1."improving the quailty of life in a city, including ecological, cultural, political, institutional, social and economic components without leaving a burden on future generations. More..."More...

3. The Urban World Chapter 10 A Growing and Changing Urban Space Weeds: http://www.youtube.com/watch?v=2W6dOEdEAAQ&feature=relat ed http://www.youtube.com/watch?v=2W6dOEdEAAQ&feature=relat ed

4. 2 Men and a Yak Why are people moving to urban areas?

5. Urban Migration 1800 – 3% Urban 1900 – 14% Urban / 12 cities with 1million people 1950 – 30% Urban / 83 cities with 1million people 2008 – 50% Urban / 400 cities & 19 with over 10million 2050 – 70% Urban Urban = in U.S. any place with more than 2,500 people

6. First Urban Revolution - 8000 to 2000 BC Second Urban Revolution - 1700 to 1850 Third Urban Revolution began 1950 and continues today in developing nations History of Urban Revolutions

7. Population and Urbanization Urbanization Trends in US What is a Megalopolis?

8. Urbanization Pros & Cons? Age Structure Greater Number of Men Poverty & Homeless People Crime Rates Pollution Increased Heterogeneity

9. P.O.E.T Population Organization Environment Technology The Ecology of a City= Population = numbers, age structure (age & sex) & ethnicity Organization = economics, government, & social structure Environment = infrastructure & location Technology = aqueducts & traffic control Elements of an Ecosystem

10. Population and Urbanization Rush to urbanization in developing countries has led to: squatter settlements Why should we be concerned?

11. Ramifications of Squatter Development 1.Poor Sanitation 2.Crime 3.Homelessness 4.High Unemployment 5.Disease Speed of urbanization is key - why?

12. Urban Problems 1.Land Use Patterns - sprawl or type of development 2.Traditional Land Loss 3.Flooding - location 4.Brownfields - industrial waste 5.Home Waste - disposal 6.Sewage Treatment - 2/3 untreated in developing nations cities 7.Commute Times 8.Urban Heat Islands 1.Megacities - 10 Million or more inhabitants 2.Urban Agglomerations 9.Pollution - water (sewage), air (ground ozone & Energy Production), noise (traffic & agriculture)

13. 1. Land Use - Georgia

14. 2. Land Use- Agricultural Loss

15. 3. Flooding

17. 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.

18. 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?

19. 7. Commute Times

20. 8. Atlanta’s Heat Island & Sprawl http://www.treecoalition.org/uhi.htm Impacts: Hotter = greater energy consumption Runoff = increased

21. 9. Atlanta’s Pollution