Hi Metrosideros! There are a lot of permaculture projects going on in tropical areas. And of course the permaculture forest design is based on the layered tropical forest. As for access to permaculture projects in tropical places I would try permaculturenews.org, and search for the area that you're interested in. I ran across this documentary:
http://www.permaculture.co.uk/...
India was one of the first areas where permaculture was introduced by founder Bill Mollison.
http://permacultureindia.org/p...