In the latest Psychologies magazine, there an interesting reference:
Science backs up the positive effects of nature with environmental psychology studies showing a neural effect on the brain. One seminal study in 2008 by the University of Washington, reported in The Journal of Environmental Psychology, compared responses to real and digital images of nature, with the real think producing lower, more relaxed, heart rates.
So I went to look for it:
Download the full article (PDF).
