A TREE PLAN FOR ALL CITIES
A TREE PLAN FOR ALL CITIES
Gil Penalosa is founder of 8 80 Cities Initiatives that advocates for public places to be more accessible.
He is pitching what he calls the 3-30-300 plan.
Based on reearch done by Cecil Konijinendijk, a professor of Urban Forestry at UBC
This plan ensures every resident has three things that can offer
significant health and environmental benefits.
What the 3-30 -300 trees plan entail are -
at least 3 trees shoild be visible from your home
the tree canopy in every single neighbourhood in the City
should cover 30 % of the land
a person should never be more than 300 nearest from the
nearest public park or green space
This plan truly recognizes hoe vitally important trees are for the City.
In Toronto alone its 11.5 million trees -
store 1.1 million tonnes of carbon
soak up more than 330, 000 cubic metres of stormwater runoff
removes 972 tonnes of air pollution
oak, hickory and birch are great trees for helping to remove
mercury, pesticides, lead, and cadmium from the air.
Eastern white cedars produce aerosols with antiviral
components that could help protect children in their young
and vulnerable years.
trees planted along the lakeshore provide shade for all aquatic
life who lay their eggs at the shoreline- too much heat from
the sun will destroy the eggs of fish and other aquatic creatures
during photosynthesis trees suck up CO2, a nasty GHG, while
providing us with oxygen
trees help reduce erosion problems during spring thaws
trees reduce the amount of lawn you have to maintain
In a report by Oakville (the first of its kind in Ontario) called
Oakville’s Urban Forest: Our Solution to our Pollution it was
pointed out that Oakville’s urban forest provided $ 2.1 million
in ecological services annually.
the town’s 1.9 million trees soaked up 22, 000 tonnes of CO2 in 2005
it filtered all the town’s industrial and commercial emissions of coarse particulate matter
the replacement value of the urban trees was pegged at $878 million
residents and businesses saved $840, 000 on their energy bills
the 20-25 % on a trees biomass that occurs underground takes up 40-60% of annual carbon
a tree gives up 10-85 % of its sugars photosynthesized from
CO2 to mycorrhizal fungi (attached to the end of tree roots) which in return pick up valuable mineral nutrient suchas phosphorous and nitrogen
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