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马尾松幼龄阶段的生长规律(PDF)

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

Issue:
1987年03期
Page:
48-57
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
GROWTH PATTERNS OF YOUNG PINUSMASSONIANA LAMB TREES
Article ID:
1000-2006(1987)03-0048-10
Author(s):
Xue Jianhui
Department of Forestry
Keywords:
Pinus massoniana Lamb Spring-shoot growth Diameter growth Net photosynthetic rate (NPR)
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1987.03.007
Document Code:
A
Abstract:
Investigations have been made on the seasonal variation in height growth, diameter growth and net photosynthetic rates (NPR) of the needles of young Pinus massoniana Lamb. (2 to 6 years old) in Guanzhuang Forest Station, Fujian province during the years of 1983 and 1984.There exists a positive relationship between spring-shoot length and apical bud size. The growth rate of spring shoots is closely correlated to air temperatures. The air temperatures favorable to the growth of spring shoots range from 8°Cto 30°C. (the average temperature of ten days) with the highest growth rate at 20°C.The measurements made in 1983 show that the seasonal changes of diameter growth accord with the seasonal fluctuations of rainfall and NPR of needles. The average daily NPR of one-year-old needles reaches a peak value by the end of May, declines obviously from July to September due to drought, and then gets to a second peak value in October.

References

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Last Update: 1900-01-01