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Chapter 14, Section 2: Urban Land Use Standards: SEV1c, 5d.

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Presentation on theme: "Chapter 14, Section 2: Urban Land Use Standards: SEV1c, 5d."— Presentation transcript:

1 Chapter 14, Section 2: Urban Land Use Standards: SEV1c, 5d

2  The movement of people from rural areas to cities.  Mostly caused by people searching for jobs

3  Urban areas that grow quickly: ◦ Not enough infrastructure to support so many people  Traffic jams b/c not enough roads  Overcrowded schools b/c not enough school buildings  Overflowing or malfunctioning sewer systems ◦ Too many people can cause living conditions for all to deteriorate- called urban crisis. Shanty town on the outskirts of Hong Kong

4  Urban areas that grow slowly: ◦ Roads & public transportation are built to handle growth. ◦ Traffic flows easily. ◦ Green spaces & recreational areas are planned.  Green spaces provide temperature moderation for the city, a place for rainwater to seep into soil (instead of flooding) and a place to relax.

5  Areas on the outskirts of a city.  People usually commute into city via car or public transportation.  When city expands to countryside its called urban sprawl.

6 1. Marginal Land Use  Land that is not suitable for building ◦ Mountain sides ◦ Coastal areas  If city is poorly planned for future growth then suburbs may expand into marginal lands. ◦ Ex: Los Angeles was built in a valley. As population grew, people moved up the side of mountains to build homes. Homes subject to landslides.

7 2. Heat Island Effect  Cities are warmer than rural areas  Roads/buildings trap and store more heat than vegetation.  Can alter local weather patterns ◦ Hot air in city rises, cools, causes rain ◦ If fewer green spaces to absorb rainfall then have more flooding  Heat leads to human health problems- heat stroke  Urban Heat Islands on The Weather Channel - YouTube Urban Heat Islands on The Weather Channel - YouTube

8  Land-use planning- determining in advance how land will be used ◦ Where will houses go? ◦ Where will businesses be located? ◦ What areas should be protected for recreation & wildlife? ◦ Where will our water come from?

9  Mass Transit systems ◦ Buses ◦ Trains (NY subway, MARTA, Maglevs)  Using mass transit ◦ Saves energy ◦ Reduces traffic ◦ Reduces air pollution ◦ Decreases land covered by road/parking lot b/c can be built above/below ground.  Maglevs are magnetic levitation trains. Use magnets to start, stop, propel the train.  Maglev train video clip- The Futures Channel Maglev train video clip- The Futures Channel

10  Open Spaces (aka greenbelts) ◦ Land within urban area set aside for scenic & recreational enjoyment.  Ex: parks, gardens, bike trails, hiking trails ◦ Important for  Pollution filtration  CO 2 removal  Temperature control  Absorbing water from rainstorm runoff  Exercise & relaxation

11  Transforming 22 miles of old railroad track into space for walking, biking, recreation.  First part is complete.  Government trying to raise money for entire project  BeltLine Provides New Life to Railroad Tracks in Atlanta - NYTimes.com BeltLine Provides New Life to Railroad Tracks in Atlanta - NYTimes.com

12  Geographic Information Systems (GIS)- computerized system for storing, manipulating, & viewing geographic data.  Allows planner to see layers of information so can see what is present and what could be added/altered to an area.

13  Land-Use planning is difficult to follow through with b/c ◦ Government requires environmental impact reports of any building projects ◦ Citizens have right to comment on reports ◦ Many disagreements over plans

14  Describe the urban crisis & explain how people are addressing it.  Explain how urban areas create heat islands.  Explain how open spaces provide environmental benefits to urban areas.  Describe how a GIS system can be used as a land use planning tool.


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