Editing Permeable paving (section)

=== Trees ===
Permeable pavements may give urban trees the rooting space they need to grow to full size. A "structural-soil" pavement base combines structural [[construction aggregate|aggregate]] with soil; a porous surface admits vital air and water to the rooting zone. This integrates healthy ecology and thriving cities, with the living tree canopy above, the city's traffic on the ground, and living tree roots below. The benefits of permeables on urban tree growth have not been conclusively demonstrated and many researchers have observed tree growth is not increased if construction practices compact materials before permeable pavements are installed.<ref>{{cite journal|last=Volder|first=A|author2=Watson, Viswanathan|title=Potential use of pervious concrete for maintaining existing mature trees during and after urban development|journal=Urban Forestry & Urban Greening|year=2009|volume=8|issue=4|pages=249–256|doi=10.1016/j.ufug.2009.08.006|bibcode=2009UFUG....8..249V}}</ref><ref>{{cite journal|last=Morgenroth|first=J|author2=Visser|title=Aboveground growth response of Platanus orientalis to porous pavements|journal=Arboriculture & Urban Forestry|year=2011|volume=37|issue=1|pages=1–5|doi=10.48044/jauf.2011.001|s2cid=55307859|doi-access=free}}</ref>