Bio36_23_SustainComm - 1 2 1 2 3 1 2 6 1 Overview Ch. 23:...

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1 Overview – Urban sprawl – Urban blight – Sustainable communities – Lifestyles & the common good Sustainable Communities • Waitakere City, NZ – Problem: urban sprawl – Solution: Agenda 21 •UN program for sustainable development Greenprint plan •95% new homes b urban •80,000 native trees •30% residential trash • Trenton, NJ – Problem: urban blight – Solution: Isles, Inc. •Vacant land b community gardens •Affordable housing •Job training •Leadership training •Environmental education •Financial self-reliance programs •“Showcase Community” by Brownfields National Partnership Urban Sprawl • Origins – Little car ownership prior to WWII • Suburbs – Housing boom – Post-WWII demand for cars – Home ownership incentives – No development plan • Highways – Highway Trust Fund •Tax on gas to build new roads – Development cycle •Encourages greater distances • Exurban migration 1 2 1 2 3 1 2 Measuring Sprawl • Sprawl index – Residential density •Widely dispersed pop. – Neighborhood mix – Accessibility of street networks •Traffic on few routes 6 1
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2 •Lack of well-defined downtown • Low sprawl score means high sprawl Environmental Impacts of Sprawl • Energy resources – Oil dependence – Climate change • Air pollution – 80% near cities • Water resources runoff, flooding, erosion agricultural land
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This note was uploaded on 01/12/2012 for the course BIOLOGY 36 taught by Professor Teresafinnern during the Fall '11 term at Riverside Community College.

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Bio36_23_SustainComm - 1 2 1 2 3 1 2 6 1 Overview Ch. 23:...

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