Relationship between above- and below-ground biomass for 18-year-old Abies holophylla under different stand conditions

Title
Relationship between above- and below-ground biomass for 18-year-old Abies holophylla under different stand conditions
Author(s)
이도형이헌호
Keywords
BREAST-HEIGHT DIAMETERS; ROOT-SYSTEM BIOMASS; SLOPE; PINE; TREES; MODEL; SOIL
Issue Date
201507
Publisher
ASIA LIFE SCIENCES
Citation
ASIA LIFE SCIENCES, v.24, no.2, pp.477 - 492
Abstract
This study was performed with 18-year old Manchurian firs (Abies holophylla Max.) that were planted under the canopies of 40-50-year-old red pine (Pinus densiflora) stands in Gyeongju, Korea. The objective was to investigate and define relationships between the above- and below-ground biomass of young A. holophylla trees growing under different canopy densities. The influence of aspect was also investigated. Five A. holophylla were selected to represent each of the east-facing, west-facing, and valley plain stands, giving a total of 15 trees under investigation. The total height, base diameter, stem and branch measurements were taken to estimate above-ground biomass. Below-ground biomass was estimated by the total number, length, and weight of roots as well as the height and weight of the tap root. The relationships between the above-ground and below-ground biomass were determined for each tree and compared. A highly significant (p<0.05) correlation was observed between the above- and below-ground biomass. The relationship between the growths of the trees was found to have been significantly dependent on the intensity of the solar radiation, slope direction, and tree aspects. Biological and abiological factors were also found to have correlation to tree growth. The only non-significant correlation was between the height of the roots above-ground and the total number, length, and weight of the roots below ground. Base diameter, which is very easy to measure, was more appropriate as a predictor of biomass of 18-year-old A. holophylla trees compared to total height. Total height had the lowest correlation coefficient with biomass and therefore, was not sufficient as a predictor of the biomass. The above- and below-ground biomass data generated from this study provides valuable baseline data for the management of these trees.
URI
http://hdl.handle.net/YU.REPOSITORY/31629
ISSN
0117-3375
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자연자원대학 > 산림자원및조경학과 > Articles
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