Permaculture is an umbrella discipline underwhich falls all of agriculture,
appropriate technology, renewable and alternative energy and alternative
architecture.
That's how I see it, anyway.
Dear LL,
In doing some anti-racism work in the '90s i found a more effective way
of stating these relationships that different disciplines have with each
other as a "foundation" or "boat". Thus taking the dynamic of
power-over/power-above away from the situation. People get on board
with you more equally and genuinely if you are there to watch their back
rather than offering a hand.
Permaculture acts as a foundation for all the disciplines you mention to
stand on and find common ground with.
This is a subtle point, but often subtleties can be profoundly felt.