Try this site for heaps of useful research on benefits of trees across a wide range of areas
http://www.sactree.com/aboutUs/progr...eBenefits.html
I'm quessing you will have seen this one before but its a very sound starting point in the same field
http://na.fs.fed.us/spfo/pubs/uf/techguide/toc.htm
This site is less user friendly but if you have time on your hands (which I seriously doubt judging by the amount of work I've seen you producing on the net and running a business etc..) it is well worth the effort really good new research papers across all fields or urban forestry
http://www.fs.fed.us/psw/programs/cufr/
SF
