Study on Above-ground Biomass Allocation Characteristicsof Pseudosasa amabilis

GERI Le-tu; WU Zhi-min; YANG Xiao-sheng; FU Mao-yi; FENG Zhi-long

Based on the diameter, height and biomass of different organs of Pseudosasa amabilis, an individual optimization model is established. The results showed that the relationships among diameter, height, and biomass of different organs followed the power function model, rather than exponential model, linear model, or polynomial model. The biomass proportion of large diameter grade increased apparently after culm harvesting, and diameter was mainly distributed from 4 to 5 cm diameter grade. The standing biomass of cultivated Pseudosasa amabilis was between 48.10 t·hm-2 and 53.10 t·hm-2, while standing biomass of non cultivated P. amabilis stand was between 66.90—70.40 t·hm-2, which is a suitable species for carbon sink. Bamboo individual biomass accounted for 70% of the above-ground biomass and grew multiply as the individual bamboo diameter increasing. The biomass of litter ranged from 8.32% to 18.10% in standing biomass while that of non cultivated bamboo stands was lower than that of cultivated bamboo. There existed a 1∶ 1 constant relationship between leaf biomass and branch biomass.

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

2. Foreign Project Center of State Forestry Administration, Beijing 100714, China

3. Forestry Bureau of Guangning County, Guangning 526300, Guangdong, China

Received Date: 2009-07-17

Abstract: Based on the diameter, height and biomass of different organs of Pseudosasa amabilis, an individual optimization model is established. The results showed that the relationships among diameter, height, and biomass of different organs followed the power function model, rather than exponential model, linear model, or polynomial model. The biomass proportion of large diameter grade increased apparently after culm harvesting, and diameter was mainly distributed from 4 to 5 cm diameter grade. The standing biomass of cultivated Pseudosasa amabilis was between 48.10 t·hm-2 and 53.10 t·hm-2, while standing biomass of non cultivated P. amabilis stand was between 66.90—70.40 t·hm-2, which is a suitable species for carbon sink. Bamboo individual biomass accounted for 70% of the above-ground biomass and grew multiply as the individual bamboo diameter increasing. The biomass of litter ranged from 8.32% to 18.10% in standing biomass while that of non cultivated bamboo stands was lower than that of cultivated bamboo. There existed a 1∶ 1 constant relationship between leaf biomass and branch biomass.

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Study on Above-ground Biomass Allocation Characteristicsof Pseudosasa amabilis

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