Only the Hardiest Trees Can Survive Today’s Urban Inferno

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Climate Desk News

Environment,Cities,Climate Change

In a rapidly warming world, cities need more tree cover to stay cool—but only certain species can handle soaring temperatures, and often they aren’t native species.

Last fall, I invited a stranger into my yard. Manzanita, with its peeling red bark and delicate pitcher-shaped blossoms, thrives on the dry, rocky ridges of Northern California. The small evergreen tree or shrub is famously drought-tolerant, with some varieties capable of enduring more than 200 days between waterings.

Martin plans to study at what point the trees’ leaves hit turgor loss in dry, hot conditions. But crucially, the trees must also be able to adapt to London’s cold winters, which are expected to stay freezing even as drought and heat waves increase. Examining leaf turgor loss can’t be used to assess trees for every neighborhood in a city. Parts of Sydney are facing increasingly humid summers in an otherwise temperate climate.

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