The loss of good grade agricultural land (Best and Most Versatile) and other soil types that support nationally significant habitats should be assessed.
Dylid asesu colled tir amaethyddol graddfa uchel (y Gorau a'r Mwyaf Amlochrog) a mathau eraill o bridd sy'n cefnogi cynefinoedd o arwyddocad cenedlaethol.