Cities are heating up; strategically placed trees can bring relief
The US National Oceanic and Atmospheric Administration (NOAA) reported
that 2023 was the warmest year on record, recognizing many significant climate
events.
In Canada, communities were devastated by record-breaking
heat.
Dense urban environments, along with outdoor workers, are disproportionally
affected
by extreme heat. Heat is the leading cause of weather-related illnesses and
deaths in both Canada and the United States. While this data is troubling,
companies can explore nature-based solutions to help reverse this trend and
foster spaces where people can thrive.
Green spaces and trees can help counteract the causes and consequences of
excessive urban heat. In fact, national collaborative projects such as the NOAA
Urban Heat Island mapping
campaign
assess some of the hottest neighborhoods to help inform cooling strategies such
as tree planting.
Urban forests provide a wide range of
benefits
for human health and wellness. Although our understanding of the positive
effects of trees on people continues to grow, studies show that trees
reduce
the urban heat island
effect
and promote thermal comfort. Open-source tools such as American Forests’
Tree Equity Score National Map document how
communities of color experience an average of 33 percent less tree
canopy
(and its life-saving benefits) — which can help organizations identify where
trees are
needed
based on metrics such as surface temperature, community health and
socio-demographic
composition.
The power of place to grow urban forests
Privately owned land can represent up to 80 percent of urban
forests
in communities. For example, in the City of
Toronto,
Canada, 55 percent of its urban forest is owned and managed by private
landowners. While districts and municipalities contribute significantly to
planting and growing trees on public land for community benefit, commercial land
can also play an important role in cooling our cities. Incorporating sustainably
managed trees in places such as industrial parks or commercial properties not
only makes them more attractive spaces to work — they also provide shade and
reduce air
pollution.
When trees are distributed equitably across different neighborhoods and land use
types, more people can access their
benefits.
Commercial landowners can have an impact
Companies can enhance their direct environment by incorporating sustainably
managed trees on their property, around their facilities, and parking lots.
Although healthy and mature trees are a key facet of urban beautification, they
are also important green
infrastructure.
When designed intentionally, these natural elements can reduce the pressures of
built environments on our communities by capturing greenhouse gases and reducing
stormwater runoff. Moreover, the shade that trees cast can help reduce energy
costs to cool off adjacent buildings.
Long before society felt the effects of the COVID-19 pandemic, researchers
explored the positive links between employee wellbeing and contact with
nature,
as well as views of green
spaces.
Trees and greenery promote social
connection and
behavior, as well as improve immune systems and mental
health.
More and more US
initiatives
recognize the ways trees restore physical health and boost the wellbeing of
entire communities. For example, the Healthy Trees, Healthy Lives campaign
brings together inspirational
stories of organizations who have
amplified human connections to nature in the pursuit of healthier lives for all.
While trees offer far-reaching benefits to societies at large, they can also
bring significant improvements to individual sites. Dr. Janani Sivarajah, a
researcher with l’Université Laval’s research chair on urban trees, suggests
that urban trees are
catalysts
for health, climate resilience and collaboration. In a changing climate where
disparities overburden communities, there is no better time to put these
catalysts into action.
How to contribute to sustainably managed urban forests
In 2023, the Sustainable Forestry Initiative (SFI) released the SFI
Urban and Community Forestry Sustainability
Standard. This standard
serves as a roadmap for creating, tracking and improving an organization’s urban
forest across the US and Canada. With 16 objectives, plus clear guiding
principles and indicators, the standard offers a way for organizations of all
sizes to assess the sustainability of their urban or community forest.
For organizations seeking to maximize the health and wellbeing benefits of trees
while simultaneously minimizing risks, pursuing thematic
certification for Community
Wellbeing and Human Health enables them to achieve their goals. Moreover,
certification to SFI’s Urban and Community Forestry Sustainability
Standard
involves an objective, third-party audit to demonstrate the organization’s rigor
and commitment to sustainable urban forest management.
When healthy trees reach maturity, they provide even more for the people around
them. As our cities heat up, we can use all of the solutions that we can
cultivate.
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Published Apr 26, 2024 11am EDT / 8am PDT / 4pm BST / 5pm CEST