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森林管理问题 PowerPoint PPT Presentation


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森林管理问题. 森林管理问题. 森林中的树木每年都要有一批砍伐出售。为了使这片森林不被耗尽且每年都有所收获,每当砍伐一棵树时,应该就地补种一棵幼苗,使森林树木的总数保持不变。被出售的树木,其价值取决于树木的高度。开始时森林中的树木有着不同的高度。我们希望能找到一个方案,在维持收获的前提下,如何砍伐树木,才能使被砍伐的树木获得最大的经济价值。. 如:优 化模型. 题目要求做什么? 给出什么条件? 重要关系的描述 ,数据及其说明 寻找条件与问题的联系。. 1. 确定设计变量和目标变量; 2. 确定目标函数的表达式; 3. 寻找约束条件。. 关于审题.

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森林管理问题

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