The intention being that governments can lead by example to encourage private construction to use timber, although this literature review did not identify whether this has happened.
Y bwriad yw y gall llywodraethau arwain drwy esiampl i annog prosiectau adeiladu preifat i ddefnyddio pren, er na nododd yr adolygiad llenyddiaeth hwn a yw hyn wedi digwydd.