摘要
本文提供对热带山地雨林的本底研究。在一个成熟稳定的山地雨林群落中,个体数在各层的配置为 N_(T3)>N_(SH)N_(T2)>N_(T1),在各立木级的配置为 N_>NN_N>N_Y。冠幅面积在各层的配置为 C_(T3)>C_(T2)>C_(T1)>C_(SH),而平均冠幅面积则随高度的降低而减少。1公顷山地雨林蓄有材积(DBH>10cm)414.6m^3,其中陆均松为104.92m^3。木材主要集中于树木胸径20～100cm 间。若以 DBH≥40cm 作为木材收获的临界值,则每公顷山地雨林可收获材296.58m^3。在本山地雨林群落中,HT/DIA 值随着胸径的增大而递减。
A background research was offered on tropical mountain rain forest in this paper. In the mature stable community of tropical mountain rain forest,the individuals disposition in every layer accords with N_(T2)>N_(SN)N_(T2)>N_(T1),and in every stand class,N_>NN_N>N_V.The crown area in each layer accords with C_(T2)>C_(T2)>C_(T1)>C_(SN),whereas the average crown area decreases as the height becomes shorter. The volume of timber(DBH>10cm) in 1 ha mountain rain forest is 414.6m^3,within which Ducrydium contributes 104.92m^3.The timber is mainty within DBH 20—100cm.If the tree with DBH>40cm can be harvested, we can got 296.58m^3 timber in 1ha mountain rain forest. In the studied mountain rain forest community,HT/DIA always decreases as the diameter becomes larger.
出处
《生态科学》
CSCD
1991年第1期12-19,共8页
Ecological Science
基金
本文为CERP研究课题的一部份
关键词
山地雨林群落
空间配置
mountain rain forest
spatial disposition
individuals
crown area
volume of timber
HT/DIA.
