Volume 28 Issue 4
Aug.  2011
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JIN Ming, DING Gui-jie. Two-dimensional yield-rate tables for merchantable volumes of Pinus massoniana in Guizhou Province[J]. Journal of Zhejiang A&F University, 2011, 28(4): 576-582. doi: 10.11833/j.issn.2095-0756.2011.04.009
Citation: JIN Ming, DING Gui-jie. Two-dimensional yield-rate tables for merchantable volumes of Pinus massoniana in Guizhou Province[J]. Journal of Zhejiang A&F University, 2011, 28(4): 576-582. doi: 10.11833/j.issn.2095-0756.2011.04.009

Two-dimensional yield-rate tables for merchantable volumes of Pinus massoniana in Guizhou Province

doi: 10.11833/j.issn.2095-0756.2011.04.009
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  • Corresponding author: DING Gui-jie
  • Publish Date: 2011-08-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Two-dimensional yield-rate tables for merchantable volumes of Pinus massoniana in Guizhou Province

doi: 10.11833/j.issn.2095-0756.2011.04.009
    Corresponding author: DING Gui-jie

Abstract: To construct a model system of two-dimensional,rate-of-yield tables for a merchantable volume of Pinus massoniana wood,three models:(1) a model using Kozaks taper function;(2) a log under-bark volume function,obtained by multiplying the integration of Kozaks taper function with a constant;and (3)a bark volume function using the same form as Yamamotos volume function were selected. Then bucking was carried out using a cutting program composed by myself in R code. Comparisons of yield-rate tables for two-dimensional merchantable volumes of wood were constructed,and fitting and predicting precision of the tables was tested. Results showed that the average system error for large diameter timber with minimal diameter 26 cm was -2.87%,for medium diameter with minimal diameter 20 cm it was -3.35%,and for small diameter with minimal diameter 6 cm it was -1.35%;meanwhile the error for economic timber consisted of the above three tibmers was 0.58%. This excellent prediction precision of the model system met national standards:GB/T 20381- 2006,so these two-dimensional tables of yield rates for merchantable volumes of P. massoniana can be applied and promoted.[Ch,9 tab. 12 ref.]

JIN Ming, DING Gui-jie. Two-dimensional yield-rate tables for merchantable volumes of Pinus massoniana in Guizhou Province[J]. Journal of Zhejiang A&F University, 2011, 28(4): 576-582. doi: 10.11833/j.issn.2095-0756.2011.04.009
Citation: JIN Ming, DING Gui-jie. Two-dimensional yield-rate tables for merchantable volumes of Pinus massoniana in Guizhou Province[J]. Journal of Zhejiang A&F University, 2011, 28(4): 576-582. doi: 10.11833/j.issn.2095-0756.2011.04.009

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