"There has been a dramatic decline in heath land in Brecknock due to landimprovement schemes and intensive agriculture, " said Charles Morgan of Brecknock Wildlife Trust.
Kent County Council, Dartford and Gravesham borough councils and the Department of Transport have been working with Land Securities on transport improvement plans in the area.
The minister set up the Land Parcel Identification System (LPIS) improvement project to systematically review and, if necessary, correct each of the 742, 000 fields currently used to claim the Single Farm Payment subsidy.