One of my professors at the university gave me an article called ‚Notes on Forest Landscape Design‘ as reading. I didn’t expect much, but I was very positively surprised. Many design principles and ideas were presented, that are valid for other design projects too. One main conclusion is: Always have everything in mind :)
So, if you have some free time, I can recommend you: http://www.uiweb.uidaho.edu/e-journal/pan_eco/edesign.html