1. the yield that a forest can produce continuously at a given intensity of management —note sustained-yield management implies continuous production so planned as to achieve, at the earliest practical time, a balance between increment and cutting 2. the achievement and maintenance in perpetuity of a high-level annual or regular periodic output of the various renewable resources without impairment of the productivity of the land —see ecosystem management, long-term sustained yield (LTSY) This definition last updated 10/23/2008