This Australian web site based on David Holmgren’s 12 principles is an excellent graphical representation of permaculture – and a great introduction to the topic.
http://www.permacultureprinciples.com/
Permaculture is notoriously hard to define for someone who has never heard about it. It really defies the one-sentence description . . . which makes sense because it is such an all-encompassing approach to a complex and wonderful world. If you ever find yourself at a loss to explain it adequately, consider passing on the permaculture principles web site link to help shine a wonderful light on the world of permaculture design and techniques.
