Chicago tree cover linked to fewer deaths; 14,000 trees cut 105 deaths
A new study by Northwestern University has found that neighbourhoods in Chicago that lost more tree canopy over 11 years also recorded higher mortality rates, particularly in hotter areas. The researchers say protecting mature trees, along with planting new ones, could help reduce heat-related health risks and improve public health in cities.
A new study suggests that cities with less tree canopy may have higher death rates, particularly in areas with higher summer temperatures. Researchers examined changes in tree canopy coverage in Chicago from 2011 to 2021 and compared them to over 220,000 death records from the same period. They found that neighborhoods losing more tree cover had higher mortality rates, especially during hotter summers.
The study, published in GeoHealth, emphasizes the importance of both planting new trees and protecting mature ones. Mature trees provide significant shade and cooling benefits, and their loss can have immediate impacts on health. The researchers also found that neighborhoods with increasing tree canopy were associated with fewer deaths from various health conditions, including cardiovascular disease and mental health issues.
The study suggests that cities should focus on maintaining and expanding their tree cover to improve public health and reduce heat-related mortality.
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