Periodicity of Xylem Growth of Four Planted Tree Species from Malaysian Forest
Tree ring analysis is an important aspect in forestry and ecology as it provides information on factors influencing growth rates, wood production and quality, rotation times, and replacement rates before it will be felled and used. Growth rate information from tree ring analysis is useful for ha...
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| 格式: | Thesis |
| 语言: | English English |
| 出版: |
1995
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| 主题: | |
| 在线阅读: | http://psasir.upm.edu.my/id/eprint/9917/1/FH_1995_3_A.pdf |
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| 总结: | Tree ring analysis is an important aspect in forestry and ecology as it
provides information on factors influencing growth rates, wood production
and quality, rotation times, and replacement rates before it will be felled
and used. Growth rate information from tree ring analysis is useful for
harvesting, plantation planning, sustenance of natural forest, as well as
managing timber as a renewable resource. This study was carried out to detennine the periodicity of xylem
growth in four selected Malaysian plantation tree species, viz., Hevea
brasiliensis (rubberwood) 8-year old, Pinus caribaea (Pine) 10-year old,
Shorea /eprosu/a (Meranti Tembaga) 22-year old and Dryoba/anops
aromatica (Kapor) 21-year old, through cambium wounding by minute
pinning and knife-cutting. Diameter growth increments were measured by
a dendrometer band and the climatic data were also collected. After a year,
one tree of each species was felled, and the cambial response to wounding
measured. The xylem produced subsequent to the cambial response was
measured in two different ways, i.e., total radial growth increment (length
from the scars to the end of the cambium) and actual radial growth
increment (length from the growth zone boundatyl standard line to the
scars). |
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