When used herein:
"Board" means the board of land and natural resources.
"Department" means the department of land and natural resources.
"Owner" shall include any person leasing the real property of another under a lease having a stated term of not less than thirty years.
"Stumpage value" means the value that a willing buyer will pay to a willing seller per thousand board feet for trees standing and uncut. This value shall not include logging costs.