Scientists Urge Mandatory Urban Forests for City Resilience

Dozens of scientists are advocating for urban trees to be recognized as mandatory infrastructure, moving beyond their perception as mere aesthetic additions. In a new essay published in PLOS Climate, researchers argue that cities must prioritize and invest in urban forests as essential components for resilience, akin to education, security, and transportation systems. Manuel Esperon-Rodriguez, an ecologist at Bangor University and lead author, stated that urban forestry needs to be elevated from a "nice to have" to a "require" status.

Urban trees offer critical environmental benefits, including significant temperature reduction through shade and evapotranspiration, often referred to as "sweating." They also play a vital role in mitigating urban flooding by allowing stormwater to infiltrate the ground, a crucial function as a warming atmosphere intensifies rainfall. Beyond environmental services, these green spaces contribute to public well-being by improving mental health and providing habitats for urban fauna. The essay highlights that planting trees, particularly native species, alongside shrubs and other vegetation within city limits, enhances air quality by absorbing pollutants and supports urban agriculture through food production and job creation.

The scientists propose a four-point strategy to bolster urban forestry, encompassing funding, cultivation, and maintenance. This approach includes not only large-scale parks and woodlands but also individual trees on sidewalks and green spaces in street medians. The core challenge identified is the need for substantial investment in these natural systems. The essay emphasizes that the benefits of urban forests extend to economic savings by preventing flood damage and improving public health, thereby reducing healthcare costs. By integrating urban forestry into mandatory city planning and investment, municipalities can build more sustainable and livable environments for their residents.