Ch 22 Sustainable Cities

7/24/2019 Ch 22 Sustainable Cities

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22-1 What Are the Major Population

Trends in Urban Areas? Concept 22-1 Urbanization continues to

increase steadily and the numbers and sizes of

urban areas are growing rapidly, especially in

developing countries.


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Half of the Worlds People Live in

Urban Areas (!) Four major trends

Proportion of global population living in urban

areas is increasing

Number and size of urban areas is mushrooming "ega#ities$ h%per#ities

Urban growth slower in developed countries

Poverty is becoming increasingly urbanized;

mostly in developing countries


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&lobal 'utloo Satellite *+age of "a,or

Urban Areas -hroughout the World


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22-2 What Are the Major Urban Resource

and Environental Probles? Concept 22-2 Most cities are unsustainable

because of high levels of resource use, waste,

pollution, and poverty.

*ut + what,s the alternative-


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"otor 0ehi#les Have Advantages and

.isadvantages (1) )dvantages

#obility and convenience

obs in

Production and repair of vehicles %upplying fuel

*uilding roads

%tatus symbol


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ig2 !!31>$ p2 :


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22-' "o# &portant &s Urban (and

Use Plannin)? Concept 22-' Urban land-use planning can

help to reduce uncontrolled sprawl and slow the

resulting degradation of air, water, land,

biodiversity, and other natural resources.


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Conventional Land3Use Planning

Land3use planning $ncourages future population growth

$conomic development

=evenues/ property ta5es $nvironmental and social conse8uences

Doning

"i;ed3use zoning


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S+art &roth Wors (1)

S+art groth =educes dependence on cars

.ontrols and directs sprawl

.uts wasteful resource


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22-* "o# Can Cities +ecoe More

,ustainable and (ivable? Concept 22-* An ecocity allows people to

choose walking, biking, or mass transit for most

transportation needs! recycle or reuse most of

their wastes! grow much of their food! and

protect biodiversity by preserving surrounding

land.


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9e Urbanis+ *s &roing

.onventional housing development

Cluster develop+ent

9e urbanis+$ old villageis+ &al4ability

#i5eduse and diversity

?uality urban design

$nvironmental sustainability

%mart transportation


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ig2 !!314#$ p2 :


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-he 7#o#it% Con#ept Cities for

People 9ot Cars

7#o#ities orgreen #ities *uild and redesign for people

Use renewable energy resources

=ecycle and purify water Use energy and matter resources efficiently

Prevent pollution and reduce waste

=ecycle> reuse and compost municipal waste

Protect and support biodiversity

Urban gardens; farmers mar4ets

@oning and other tools for sustainability


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S#ien#e o#us Urban *ndoor ar+ing

=ooftop greenhouses %un &or4s/ designs energyefficient greenhouses

Arowing Power and &ill )llen

http/99www


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&reenroofs 7PA uilding in .enver

Documents

Ch 22 Sustainable Cities