The Green Benefits of NYC Protected Bike Lanes
As I have watched the numbers of protected bike lanes grow in New York City each year, I've noticed the tree canopy above the lanes gets denser and number of trees extending out into the roadway grows.
Though I freely admit this could just be anecdotal, I'm pretty sure the simple reason is this: on the avenues with protected lanes large vans & trucks are no longer constantly brushing and bruising trees since they aren't parking curbside. Although it's not an exact correlation since you can certainly find some blocks where the opposite is true, generally there is much, much more green on these bike corridors.
Add in pedestrian safety islands that have trees and other plantings (many thanks to community associations and businesses) and the buffer zone being a perfect place to put bike parking and Citibike stations, and I think this helps make for a future selling point to communities!