• 作者： 高強; 劉天賜
• 作者服務機構： 國立成功大學工業管理研究所
• 中文摘要： 再生性質振以其具有生長之特性而別給耗竭性資源，然而具有生長性也未必意味?永不耗竭
  ，必須仔細規劃開發，以使每一單位均能發揮最高之效益。文中將一般之再生性質源分為單齡級
  固定生長率、單齡級變動生長率以及多齡級變動生長率等三類，以數學規劃方法列出求總收益現
  值最大之模式，消除多餘之限制式後，再依非線佳規劃中之Kuhn-Tucker條件式，導出一簡便
  之反覆求解循?關係式，最後再以林業為例，舉一假想之花旗松森林，配合文中所討論之三類模
  式，分別做一簡單之計算說明。m
• 英文摘要： Renewable resources are different fromexhaustible resources by the fact that theformer can grow. Although renewableresources can grow, it does not mean thatthey will never be exhausted. The exploitationhas to be carefully planned to the best useof each unit exploited. In this paper threemodels concerning the best use of renewableresources are proposed: single age-elass withfixed growth rate, single age-class withvariable growth rate, and multiple age-classeswith variable growth rate. Mathematicalprogramming is used to formulate the pro-blem to maximize the present value. Theredundant constraints are eliminated. Thena simple recursive relationship for eachmodel is derived from the Kuhn-Tuckerconditions of the corresponding model.Finally, a Donglasfir forest is used as anexample to illustrate how the derivd recursiverelationship can be used to solve the realisticproblems·
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