Volume 20 Issue 2
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LIU jian, GUO Jian-hong, GUO Jin-hui, SHENG Shu-juan. A study of node selection of stem curves of Cunninghamia lanceolata in northern Fujian fitted with cubic spline functions[J]. Journal of Zhejiang A&F University, 2003, 20(2): 219-223.
Citation: LIU jian, GUO Jian-hong, GUO Jin-hui, SHENG Shu-juan. A study of node selection of stem curves of Cunninghamia lanceolata in northern Fujian fitted with cubic spline functions[J]. Journal of Zhejiang A&F University, 2003, 20(2): 219-223.

A study of node selection of stem curves of Cunninghamia lanceolata in northern Fujian fitted with cubic spline functions

Funds:

福建省教育厅科学基金资助项目(JB01165)

  • Received Date: 2002-09-28
  • Rev Recd Date: 2003-02-23
  • Publish Date: 2003-06-20
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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A study of node selection of stem curves of Cunninghamia lanceolata in northern Fujian fitted with cubic spline functions

Funds:

福建省教育厅科学基金资助项目(JB01165)

Abstract: On the basis of statistic knowledge and computer technology and with correlative coefficients fo samples as main evaluating indexes , the data from stem analysis of Cunninghamin lanceolata in the north of Fujian Province are used to fit the stem curves with cubic spline functions .From the base of the tree , the nodes are expressed by percentage of the tree height .The nodes selected in this paper are as follows :0 , 10 %, 15 %~ 20 %, 50 %~ 60 %, 80 %~ 85 %and 100 %.Compared with other methods , the fitting effects of selected nodes are better than those of traditional nodes .The tested sample shows that the nodes selected in this paper can precisely fit the stem curves and embody the integrated shape of Cunninghamia lanceolata .[ Ch , 4 tab .8 ref .]

LIU jian, GUO Jian-hong, GUO Jin-hui, SHENG Shu-juan. A study of node selection of stem curves of Cunninghamia lanceolata in northern Fujian fitted with cubic spline functions[J]. Journal of Zhejiang A&F University, 2003, 20(2): 219-223.
Citation: LIU jian, GUO Jian-hong, GUO Jin-hui, SHENG Shu-juan. A study of node selection of stem curves of Cunninghamia lanceolata in northern Fujian fitted with cubic spline functions[J]. Journal of Zhejiang A&F University, 2003, 20(2): 219-223.

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