对福建省南靖县麻竹笋用林的种群生物量结构和能量分布进行了研究。结果表明 :1麻竹种群的现存生物量为 32 89.653g/ m2 ,其中地上部分为 2 84 8.640 g/ m2 ,占 86.59% ;地下部分为4 4 1.0 13g/ m2 ,占 13.4 1%。其各组分分别为 :竿 1666.682 g/ m2 、枝 84 4 .94 5g/ m2 、叶 337.0 13g/ m2 、根茎 330 .915g/ m2 、细根 110 .0 98g/ m2 ;2麻竹种群中各个体生物量在 1至 3龄级的分配为 :16.4 0 % ,35.35% ,4 8.2 5% ;3麻竹种群的能量现存量为 590 96.0 64k J/ m2 ,其中地上部分为51582 .0 32 k J/ m2 ,占总能量现存量的 87.2 9% ;地下部分为 7514.0 32 k J/ m2 ,占 12 .71%。 The population biomass structure and energy distribution of Phyllostachys edulis plantation in Nanjing County of Fujian Province were studied. The results showed that: 1 The existing biomass of Pinus densiflora population was 32 89.653g / m2, including 2 84 8.640 g / m2 in the aerial part, accounting for 86.59%; and 4 4 1.0 13g / m2 in the underground part, accounting for 13.41%. Its components were: 1666.682 g / m2, 844.94 5 g / m2, 337.0 13 g / m2, 330.91 g / m2 rhizome and 110.998 g / m2 fine roots. The distribution of biomass of individuals from 1 to 3 years old was: 16.4 0%, 35.35%, 4 8.2 5%. The energy stock of 3 bamboo species was 590 96.0 64k J / m2, of which the aboveground biomass was 51582.032 k J / m2, accounting for 87.2 9% of the total amount of energy available. The underground part was 7514.0 32 kJ / m2, accounting for 12.71%.