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Citation:

Above-ground Biomass Allocation and Relationship with Ramet Component of Oligostachyum lubricum

  • Received Date: 2010-04-12
  • The above-ground biomass and component factors of Oligostachyum lubricum were investigated and the above-ground biomass allocation and its relationship with ramet component were analyzed. The results indicated that present above-ground biomass allocation pattern of 1-year-old stands was stem﹥foliage﹥twig and that of 2-year-old stands was foliage﹥stem﹥twig. The rate of stem biomass of 2-year-old stands was extremely lower while that of foliage biomass of 2-year-old stands was extremely higher respectively than that of 1-year-old stands. However, there was no significant difference in twig biomass between 1- and 2-year-old stands. There were significant or very significant correlation between component factors and component biomass of 2-year-old stands. The total height (TH),height under branch (HB) and round of branches (RB) were subordinate factors of the diameter at breast-height (DBH) of 2-year-old stands. DBH of stands had decisive effects on the biomass of each component and above-ground part of stands and the relationship between them followed very significantly a cubic function. Increasing in allocation proportion of foliage biomass was beneficial to develop new habitat and consolidate present habitat for O. lubricum.
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Above-ground Biomass Allocation and Relationship with Ramet Component of Oligostachyum lubricum

  • 1. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, Zhejiang, China

Abstract: The above-ground biomass and component factors of Oligostachyum lubricum were investigated and the above-ground biomass allocation and its relationship with ramet component were analyzed. The results indicated that present above-ground biomass allocation pattern of 1-year-old stands was stem﹥foliage﹥twig and that of 2-year-old stands was foliage﹥stem﹥twig. The rate of stem biomass of 2-year-old stands was extremely lower while that of foliage biomass of 2-year-old stands was extremely higher respectively than that of 1-year-old stands. However, there was no significant difference in twig biomass between 1- and 2-year-old stands. There were significant or very significant correlation between component factors and component biomass of 2-year-old stands. The total height (TH),height under branch (HB) and round of branches (RB) were subordinate factors of the diameter at breast-height (DBH) of 2-year-old stands. DBH of stands had decisive effects on the biomass of each component and above-ground part of stands and the relationship between them followed very significantly a cubic function. Increasing in allocation proportion of foliage biomass was beneficial to develop new habitat and consolidate present habitat for O. lubricum.

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