Ability to extrapolate the Barcelona solutions 293Flexibility and stability for a region’s futureis a synthesizing solution that
incorporates many of the others listed. From economics to aes-
thetics and water to biodiversity, the specific land-use solutions
are, in part, determined by how well they provide flexibility and
stability for a region’s future.Solutions widely applicable to certain sets of urban regions
Ten Barcelona solutions (see Chapter 10 and Color Figures2--39)fitthis
category. For each the applicable type of urban region is indicated as follows:
Asetofdiverse large agricultural areasapplies well to regions with good
agricultural soil in large patches and of different types. If a
single productive soil type predominates, different landscape
areas can be established by maintaining different predominant
crops. The solution applies poorly in regions with only small
patches of farmland soil, such as in many glaciated and arid
areas.
Ariver-watershed magnet for visitors and nature tourismapplies well where
the matrix, or an extensive area in the outer urban-region ring,
is natural vegetation containing a large river basin or catch-
ment. If these natural conditions no longer exist, the river-
watershed magnet solution might be a useful framework for
landscape restoration.
River restoration, which includes both water and valley, especially applies
in regions where a river valley is upriver from the metropoli-
tan area. Non-point pollutant sources from sewage, storm water,
industry, and agriculture are significantly reduced in part
through changes in land-use pattern, including land protection.
Floodplain riparian vegetationproviding an array of human and natural
benefits applies widely in regions with streams and rivers. In
hilly/mountainous terrain, woody vegetation, and other tech-
niques can be targeted separately to upper tributaries and to
lower floodplains.
Apackage of f lood-hazard-reduction techniquesapplies in urban regions with
thethreat of river or stream flooding. The package addresses
issues related to land and slopes, stream and river valleys, storm-
water pipesystemsinmetro areas, and wetlands.
Separate stormwater and sewage systemsis a solution applicable in most
urban regions where large areas have a single pipe system com-
bining sewage wastewater and storm water runoff. Water bodies