Definition: (a) A relative measure of forest site quality based on the height (in feet) of the dominant trees at a specific age (usually 25 or 50 years, depending on rotation length). Site index information helps estimate future returns and land productivity for timber and wildlife.
(b) Height of a tree at a specified index or base age. Used as an indicator of site quality.
(b) Height of a tree at a specified index or base age. Used as an indicator of site quality.
