Following on from my previous post about permaculture I have found a link to a page about Agroforestry. 

http://www.agroforestry.co.uk/

Agroforestry is the growing of both trees and agricultural / horticultural crops on the same piece of land.

They are designed to provide tree and other crop products and at the same time protect, conserve, diversify and sustain vital economic, environmental, human and natural resources.

Agroforestry differs from traditional forestry and agriculture by its focus on the interactions amoung components rather than just on the individual components themselves.

In the long term I believe both Permaculture and Agroforestry will have a great influence on the HCFA's planning strategy.