| 系统收获表研究的概念和功能(英文) |
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| 引用本文： | 郑小贤,木庭勇吉.系统收获表研究的概念和功能(英文)[J].中国林学,1997(1). |
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| 作者姓名： | 郑小贤 木庭勇吉 |
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| 作者单位： | 北京林业大学森林资源与环境学院(郑小贤)，东京农工大学农学部(木庭勇吉) |
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| 摘 要： | 传统收获表是指某一树种在特定地区和管理体系下，以立地条件和年龄为变量描述林分平均生长过程的数表．林分密度管理图是根据林分密度效果编制的可预测林分平均收获的图．通过与传统收获表和林分密度管理图的概观比较和探讨，该文系统地阐述了系统收获表的概念和功能．系统收获表的基本特点是为预测现实林分在不同立地条件和管理体系下生长过程的计算机程序．因此，系统收获表能描述在多维变量（如年龄、立地条件、林分密度、胸径和树高）条件下的现实林分和单木的无数生长过程
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| 关 键 词： | 收获表，林分密度管理图，系统收获表，收获预测，生长模型 |
Definition and Functions of the System Yield Table |
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| Zheng Xiaoxian College of Forest Resources and Environment,Beijing Forestry University,Beijing ,P. R. China Yukichi Konohira Faculty of Agriculture,Tokyo University of Agriculture and Technology Tokyo,Japan.Definition and Functions of the System Yield Table[J].Forestry Studies in China,1997(1). |
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| Authors: | Zheng Xiaoxian College of Forest Resources and Environment Beijing Forestry University Beijing P R China Yukichi Konohira Faculty of Agriculture Tokyo University of Agriculture and Technology Tokyo Japan |
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| Institution: | Zheng Xiaoxian College of Forest Resources and Environment,Beijing Forestry University,Beijing 100083,P. R. China Yukichi Konohira Faculty of Agriculture,Tokyo University of Agriculture and Technology Tokyo,183,Japan |
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| Abstract: | This paper formulates the definition and functions of the system yield table in comparison with the conventional yield table and forest stand density control diagram by overview. Using the variables of site and stand age,the conventional yield table shows the estimated values of forest stand growth, in case of specific tree species in a specific area and under specific management.Forest stand density control diagram can estimate the yield in the case of various stand density controls.The system yield table is a computer program with an algorithm to estimate the growth process in the future in cases of various types of management for the forest stand under various site conditions. The system yield table can express the countless growth processes in countless stands in a multidimensional space formed by variables including tree diameter, height, volume, density, tree age. |
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| Keywords: | yield table forest stand density control diagram system yield table yield prediction growth model |
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