The more trees planted in a neighborhood, the longer people live, according to a recent study led by U.S. Forest Service researchers out of Portland, Ore.
A recent study conducted in Portland, Ore., found that in neighborhoods where a nonprofit planted more trees, fewer people died.
The paper, by researchers at the U.S. Forest Service, adds to a budding body of research into the health benefits of living around greenery. Its findings amount to a prescription for policymakers to plant more trees. “Urban trees are an essential part of our public health infrastructure, and they should be treated as such,” said Geoffrey Donovan, the Forest Service researcher who ledFor three decades, the Portland nonprofit Friends of Trees planted nearly 50,000 oaks, dogwoods and other arboreal species around the city, giving Donovan and his colleagues granular data on how its canopy has changed over time.
“Across the board, the benefits of trees are astounding,” said Yashar Vasef, executive director of Friends of Trees, which plants across six counties in Oregon and Washington. “And they come at a lower cost than many other solutions.” The health benefits of living among trees bloomed as the trees themselves grew. As the trees got older, grew taller and cast their leafy limbs wider, the mortality rates among people nearby went down, the study found.Or as Donovan summed it up: “Bigger trees, bigger impact on mortality, which is what you would expect.
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