Surface water flooding and poor water quality are alreadychallenges in urban areas, with significant economic costs andimpacts on health and wellbeing, and they are set to intensifywith climate change and increasing urbanisation. Whilsttraditional engineering approaches are part of the solution,evidence suggests that urban trees can also play a role. This canbe done by preserving woodlands, forests and natural vegetationin watersheds; enhance urban and suburban tree canopy;protect trees at development sites; and increase the use of treesin storm water drainage systems.
It also include the use of tree pits which are adapted hold thewater whilst ensuring good aeration, irrigation and space for theroot system in order that urban trees thrive and provide longtermcanopy cover.
The NBS don’t create important modifications in the environment.
The arboreal interventions get the recovery of the investment in about 5 years.