Mae’r unigolion a sefydliadau sy’n rheoli ein  coedwigoedd a’n ffermydd ym mhlith y mwyaf dibynnol ar ein hadnoddau naturiol. Os yw eu busnesau nhw i lwyddo a gwneud elw, mae’n rhaid cael ecosystemau iach sy’n gweithio’n iawn. Calonogol yw gweld felly bod cynifer o reolwyr tir wedi ymuno â Glastir bellach, yn enwedig ers imi gynnal fy ymarfer pwyso a mesur.
Individuals and organisations which manage our farmed and forested land areas are amongst the most dependent upon our natural resources. The profitability and long term viability of their businesses depends upon healthy, well functioning ecosystems. I am therefore encouraged by the number of land managers now participating in Glastir and, particularly in the significant increase that has occurred over since my stocktake.