Studies on the Structure and Dynamics of Biomass of Qiongzhuea tumidinoda Clone Population

The biomass structure and dynamics of Qiongzhuea tumidinoda Hsueh et Yi clone population were studied at the level of community and ramets population. The results are as follows: (1) The relationship between biomass of ramets (W) and its breast height diameter (D) can be best described by the model: W=344.096 3 D -22.061 2; (2) The biomass allocations of ramets from 1 to 5 a are 31.94%, 37.01%, 13.30%, 16.24% and 1.51% respectively, while the allocations among culm, branch, leaf, root, rhizome, bamboo stump are 42.72%, 5.82%, 6.52%, 6.70%, 27.13% and 11.11% respectively; (3) The biomass increase of clone population between the stage of shoot and young bamboo follows Logistic equation. The biomass allocation to leaves, however, changes with the season, and its peak value and lowest value appear in Oct. and Feb. respectively.