The general perception as to the value of trees, both by professionals and the public, is now based on a significantly wider range of factors than visual amenity alone.
Mae canfyddiad cyffredinol gweithwyr proffesiynol a’r cyhoedd ynglŷn â gwerth coed bellach yn seiliedig ar ystod lawer ehangach o ffactorau nag amwynder gweledol yn unig.