An interesting project on how trees and sheep can coexist - and help alleviate flooding - from RuSource/the Arthur Rank Centre:
There are different opinions:
BBC - Learning Zone Class Clips - Changing landscapes - sheep grazing - Geography Video
Feral | George Monbiot
Futures Forum: Peaslands Knapp... meadows and sheep
Futures Forum: 'A Farm For the Future'
Futures Forum: 'Mega farms'... for Devon...?