All development must aim to deliver a net benefit for biodiversity (and ecosystem resilience) from the baseline state (proportionate to the scale and nature of the development proposed).
Rhaid i bob prosiect gyflawni’r amcan canlynol o blith prif amcanion Rheoli Tir yn Gynaliadwy: Cynnal a gwella gwytnwch ecosystemau a’r manteision maent yn eu darparu.