Dynamics and dry matter production of belowground woody organs ofPinus pumila trees growing on the Kiso mountain range in central Japan |
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Authors: | Takuya Kajimoto |
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Institution: | (1) Laboratory of Silviculture, Faculty of Agriculture, Nagoya University, 464-01 Nagoya, Japan;(2) Present address: Laboratory of Plant Production, Forestry and Forest Products Research Institute, 305 Tsukuba, Ibaraki, Japan |
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Abstract: | Size, biomass and spatial distribution patterns of belowground woody organs ofPinus pumila trees were investigated. Dry weight estimates of five sample trees were between 14 and 36 kg tree−1. Belowground stems accounted for about 32% of the total tree weight. However, the belowground stems had extensive barkless
portions, indicating that the decomposition of dead belowground stems was an important source of organic matter in the soil.
The, basal diameters of adventitious roots tended to become smaller as their orginating positions neared the ground surface.
It was suggested thatP. pumila trees regenerate by successively producing adventitious roots from their buried stems and moving down the slope. |
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Keywords: | adventitious root belowground stem dynamics Pinus pumila tree structure |
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