福建永春毛竹种群生物量和能量研究

Biomass Structure and Energy Distribution of Phyllostachys heterocycla cv. pubescens Population

研究了福建省永春县毛竹种群的生物量结构、能量分布 ,研究结果表明 :(1)永春毛竹种群的现存生物量为6 474.874g/m2 ,其中地上部分为 46 76 .6 39g/m2 ,占 72 .2 3% ;地下部分为 1798.2 35g/m2 ,占 2 7.77% ;其各组分分别为 :杆 3736 .2 0 0 g/m2 、枝 772 .0 6 9g/m2 、叶 16 8.370 g/m2 、竹蔸 10 5 9.115 g/m2 、鞭根 739.12 0 g/m2 ;(2 )毛竹种群生物量在Ⅰ至Ⅳ度的分配为 :5 .12 % ,40 .5 2 % ,39.82 % ,14.5 4% ;(3)毛竹种群的能量现存量为 12 46 89.5 76kJ/m2 ,其中地上部为 912 18.36 1kJ/m2 (占 73.16 % ) ,地下部为 334 71.2 15kJ/m2 (占 2 6 .84% ) ;(4 )能量现存量在Ⅰ至Ⅳ度的分配为 :5 .0 8% ,40 .38% ,39.80 % ,14.74% .

Biomass structure and energy distribution of Phyllostachys heterocycla cv. pubescens population in Yongchun county, Fujian were discussed in this paper. The results showed as follows:(1)the standing crop of biomass in the Phyllostachys heterocycla cv. pubescens population was 6 474.874 g/m 2, in which the biomass of above-ground was 4 676.639 g/m 2 (accounting for 72.23%), and that of below-ground was 1 798.235 g/m 2 (27.77%), respectively; the biomass of various components of population was 3 736.200 g/m 2 for stem, 772.069 g/m 2 for branch, 168.370 g/m 2for leaf, 1 059.115 g/m 2 for rhizome and 739.120 g/m 2 for roots, respectively.(2)the biomass components fromⅠto Ⅳ age was 5.12%, 40.52%, 39.82% and 14.54%, respectively.(3)the standing crop of energy was 124 689.576 kJ/m 2 , in which above-ground and below-ground comprised 91 218.361 kJ/m 2 (accounting for 73.16%) and 33 471.215 kJ/m 2 (26.84%), respectively.(4)the standing crop of energy from Ⅰto Ⅳ age was 5.08%, 40.38%, 39.80% and 14.74%, respectively.