A state Constitutional amendment in Georgia that would give property tax relief to tree farmers is getting endorsements ranging from the Georgia Chamber of Commerce to the Sierra Club. Amendment No. 1 on the General Election ballot would change the way forest land of more than 2,000 acres is assessed. Instead of fair-market value, the land would be taxed based on its actual use. That method of assessment is already in place for individual and family-owned forests of 2,000 acres or less. The change would benefit corporations and owners of larger land parcels.