Urban tree solutions

URBAN TREEPLANTING SOLUTIONS

People tend to take trees for granted. And some still assume that planting trees in cities does not need more than digging a hole and planting the tree. Nothing could be further from the true for the urban landscape. Although we all learn there should be a balance between tree size and root system.  But probably we forget, trees will grow.  If you want healthy, mature, functional trees specify the right soil volume according the future trees canopy size .  

With trees there is more than meets the eye.

It’s obvious that city green (parcs, trees, turf, plants) beautify our urban environment, the so called green infrastructure. Besides being beautiful, only urban trees provide so many other benefits that trees are regarded as the basis of city’s “green infrastructure.”
Most important benifit is being the solution to slow down climate change. Research all around the world shows trees are the most efficient and effective way in fighting climat change.
Climate change is affecting us now. As different parts of the country become drier, wetter or hotter, green infrastructure can help improve community resiliency today and into the future.
Planting more trees can help communities prepare for and manage the effects of climate change in their city:

managening flooding   drying out city soil    trees cool down cities   trees decreases enery demands    trees will discharge sewersystems

Trees in the urban context.

It is an accepted fact that mature trees can contribute significantly to healthier soil, air, and water in cities. But cities are not typically hospitable places for plant growth, and trees seldom live long enough to reach maturity and provide meaningful ecological services. In the forest you can dig a hole plant a tree and it will grow. No one will complain about roots growing just below the surface, or about leaves falling on the ground. In the city we are dealing with a totally different expectation pattern. We want the roots to grow deeper so they won't damage the paving. We have to take into account the fact, the urban soils are used in a multifunctional way; urban forestry, civil works and water management. Respectively combining green gray and blue.

The most important points to take into account are

  • Lack of space
    Every inch in the city is already been claimed by various of functions. All fighting for there own exsistance.  Road foundation sewer systems, parking places, utilities etc. Space is scarce.  Highly effective soil volume is needed to insure trees will grow into big trees with a minimal soil volume. 
  • Utilities running everywhere
    Everywhere  you dig a treepit  in the city; utilities will probably show up. And mostly not exactly where you expected them.  Relocating those ultilities are not budgeted.  Therefor it is most cost effective if the treepit can integrate utilities as they are . 
  • Road building specifications 
    For road foundation , same with citytrees, the following applies; less volume means more maintanance.  Trees need loose well aerated soils in contract to road building needing a highly compacted soil.  Trees attempting to grow in compacted soil rarely meet their full growth potential and may die prematurely or damage pavement trying to survive. 
  • Disturbed water cycle 
    Urban soil and trees are drying out despite and we are directing water away by sewersystems. This is a principle that is often applied. It makes more sense to first let the tree benefit from itthe rain before draining away.  There is a need for solutions that are based on circular not linear processes. 

Because of these harsh conditions in the city, we have to try to reach the most ideal situation for the tree.  Time has past for mono-functional use of space .

Now take a look at the following products relying on multifunctional urban design . 

 

 

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