| 商品材积变型估测系统的研究 |
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| 引用本文： | 严若海,吴富桢.商品材积变型估测系统的研究[J].南京林业大学学报(自然科学版),1992,16(3):31-37. |
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| 作者姓名： | 严若海 吴富桢 |
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| 作者单位： | 林业部中南规划院，南京林业大学 长沙 410014 |
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| 摘 要： |
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| 关 键 词： | 变型形数 削度方程 商品材积 |
A STUDY ON THE VARIABLE MERCHANTABLE VOLUME ESTIMATION SYSTEM |
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| Yan Ruohai.A STUDY ON THE VARIABLE MERCHANTABLE VOLUME ESTIMATION SYSTEM[J].Journal of Nanjing Forestry University(Natural Sciences ),1992,16(3):31-37. |
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| Authors: | Yan Ruohai |
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| Institution: | Yan Ruohai (Institute of Central South China of Forest Inventory & Ministry of Forestry)
Wu Fuzhen (Nanjing Forestry University) |
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| Abstract: | In order to integrate the stumpage volume caculating method with that of the felled tree and overcome the unjointment of the stumpage volume table and merchantable volume table, the materials of the seedling Chinese fir in ZheJinag Province was selected in this essay. The mathematical methods to describe the stem profiles was studied, the new concept of the variable form factor was advocated and the new variable taper models derivated. After the comparing of different taper models, the optimum variable taper models was selected to construct a Two-way variable merchantable volume table. If the data of D. b. h. and H for a single tree was inputed into computer, the precise total volume and different merchantable volume could be obtained consistently. This provide the index basis about forest resource' s quantity and quality for the purpose of scientific forest management reasonably exploitation and utilization and realizing of limited cutting plan. |
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| Keywords: | Variable form factor Taper equation Internal form factor Merchantable volume |
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