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Recommendations for Planning . |
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6.2.3 Green Corridors In addition to the importance of green spaces for reserving fresh air corridors, their function as dividing elements in the developed landscape must be given special consideration. The effectiveness and expansiveness of green spaces go hand in hand. Sufficient proportions of green space have a climate-regulating function. In general, the provision of meadows with a thin cover of trees and shrubs is especially favorable. Green belts are
particularly suited for the separation of residential areas from
emitting industrial and commercial areas as well as
heavily-trafficked roads. They function as spacers, aid air
exchange, and dilute air pollution (cf. Section
6.3.3). In addition, similar to a filter they hold back
powdery pollutants. Green breaks do not only represent a
dividing element of urban design, they also signify
interruptions in the heat islands characteristic to built-up
areas, which supports small-scale air exchange processes between
the city sections they divide and between areas with differing
temperatures. Legal Bases From an urban climate perspective, the realization of a sensible arrangement of built and unbuilt (green) spaces requires a coordinated interlinking of landscape plans / land-use plans and open-space control plans / site plans (cf. Section 6.1.1). Climatic and air-hygiene maps represent – as described in Chapter 5 – an indispensable technical basis in this regard. |
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| Fig. 6/14a: Green belt | |
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| Fig. 6/14b: Aeration potential of the city center of Freiburg in the annual average (RÖCKLE & RICHTER, 2003) | |
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