Impervious surfaces in the form of roads, parking lots, and buildings can make things warmer, drier, and all-around more stressful for trees planted in them. It can also increase insect pest abundance.
My colleagues and I recently published a paper about how to mitigate the effects of these stressful urban conditions on trees. Below is a link to a blog post written by my collaborator, Steve Frank, at NC State University.
To learn more, read the paper here or visit the extension page to find short documents that summarize our results.