| 非线性状态方程模拟异龄林分径阶动态 |
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| 引用本文： | 谢哲根,于政中.非线性状态方程模拟异龄林分径阶动态[J].北京林业大学学报,1993,15(1):49-57. |
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| 作者姓名： | 谢哲根 于政中 |
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| 作者单位： | 浙江省林勘院，北京林业大学林业资源学院，北京林业大学计算中心 杭州 310000 |
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| 摘 要： | 该文用状态空间法建立描述异龄林分径阶动态的非线性状态方程,将林分状态依赖的定期各径阶平均直径净生长量模型、各径阶的桔损率模型、进界生长量模型作为三个子模型.具体应用到长白山林区云冷杉为主的混交异龄林的径阶动态模拟,短期和长期模拟效果都较好.此模型对研究现实异龄林分合理择伐问题很有价值.
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| 关 键 词： | 异龄林 径阶动态 状态方程 长白山林区 云冷杉林 |
Simulating Uneven-aged Stand Dynamics with Nonliner State Equation |
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| Xie Zhegen.Simulating Uneven-aged Stand Dynamics with Nonliner State Equation[J].Journal of Beijing Forestry University,1993,15(1):49-57. |
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| Authors: | Xie Zhegen |
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| Abstract: | A dynamic model of uneven-aged stands diameter class states,which is nonliner state equation,is developed.Three models——periodicaldiameter average net growth models of each diameter class,mortality ratemodels of each diameter class,and ingrowth model——which are dependenton stand attributer are regarded as three submodels.Simulating effects of short-term and long-term are acceptable for spruce and fir dominated mixed uneven-aged stands in Changbaishan forest region.This system model is useful for selection harvests studies of actual uneven-aged stands. |
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| Keywords: | uneven-aged stand diameter class dynamics state equation Changbaishan forest region spruce and fir uneven-aged stands |
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