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北方天然次生林主要阔叶树种树冠建模及应用(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2012年04期
Page:
7-12
Column:
研究论文
publishdate:
2012-07-31

Article Info:/Info

Title:
Crown profile simulation of major broad-leaf species of natural secondary forest in north of China
Author(s):
WANG Xiaoming1 LU Jun2* LI Fengri3
1. State Forestry Administration, Beijing 100714, China; 2. Research Institute of Forest Resource Information Technique, CAF, Beijing 100091, China; 3. School of Forestry, Northeast Forestry University, Harbin 150040, China
Keywords:
secondary forest crown profile branch analysis crown diameter depth into crown
Classification number :
S757
DOI:
10.3969/j.jssn.1000-2006.2012.04.002
Document Code:
A
Abstract:
A simple crown profile model for 10 broad-leaf species in secondary forest collected from Mao’er Mountains in Heilongjiang province was developed using the data of 3 401 living branches from 176 stems. The shape of crown varied along with the depth into crown(CDIN)which expanded at the upper, middle parts of the crown, however, shrank at the lower area, the main model could be categorized into the profile model of upper, middle crown(hRPCA=a0+a1/ln RB+a2/ln(RB)2+a3/ln(RB)3)and the profile model of lower crown hRPCB,birch=b00+[b1·(exp(b2)·ln(RB)-1)]/b3; hRPCB,phellodendri=b0+b101·ln(RB)+b2·ln(RB)2; hRPCB,other=b0+b101·ln(RB)+b22·ln(RB)2+b33·ln(RB)3. The fitting and validation of these crown profile models performed very well and the correlation coefficients were all greater than 0.97.

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Last Update: 2012-07-07