“Urban foresters, planners and decision-makers need to understand trends in urban forests so they can develop and maintain sufficient levels of tree cover – and the accompanying forest benefits – for current and future generations of citizens,” stated David Nowak, lead author for research undertaken by US Forest Service
The study builds on a finding that was identified by David Nowak and co-author Eric Greenfield in a ground-breaking 2012 study that found 17 out of 20 American cities had experienced significant tree loss. Nowak is worried about what will happen if the trend continues. “If it keeps going down, I think we’re going to be in trouble. Cities will warm up, we might have more pollution, people will be more unhealthy,” he said. There is robust evidence to suggest that trees are good for public health.