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杨树生长的边行优势及其在胶合板材培育中的应用(PDF)

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

Issue:
1997年02期
Page:
13-17
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
THE EDGE GROWTH EFFECT OF POPLAR AND ITS APPLICATION ON SILVICULTURAL PRACTICE  OF PLYWOOD PLANTATIONS
Article ID:
1000-2006(1997)02-0013-05
Author(s):
Fang Shengzuo(Nanjing Forestry University Nanjing 210037)Cai Shunzhang Yu Honglin
Baoying Diversified Economy Management Bureau
Keywords:
Poplar clone I69 Stand density Edge growth effects Plywood cultivation
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1997.02.003
Document Code:
A
Abstract:
Based on the investigation of 35 plantations of clone I69, the difference between edge tree and standing tree in DBH, tree crown, tree height and volume was compared. The results indicated that the edge growth effect in DBH, tree crown and volume rised with the increasing of stand density, but the difference in tree height between edge tree and standing tree was slight. There existed a great difference in edge growth effects for various orientations which the edge row located. In four orientations (East, South, West and North), E orientation had the highest edge growth effects, W orientation was the second and N orientation was the lowest. The time which edge growth effects occured was different from various stand density plantations, the higher the stand density was, the earlier the edge growth effect happened. For the stand which stand density was 400 stems/hm2, the edge growth effect appeared about 7~8 years. On the basis of tree edge growth effects, the suitable planting density, reasonable spacing of planting spots and optimum patterns were suggested for poplar plywood plantations.

References

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Last Update: 1900-01-01