论文部分内容阅读
应用生物量回归模型和生产力方程，研究了西双版纳原始热带湿性季节雨林生物量及净初级生产量（NPP）。雨林总生物量为692．590t·hm-2，总生物量分配为：乔木层占98．66％、灌木层占0．76％、木质藤本层占0．50％、草本层占0．09％，生物量主要集中于乔木层。雨林年平均NPP为25．764t·hm-2·a－1，其中各层次的NPP分别为（t·hm-2·a－1）：乔木层23．972（占总NPP的93．04％）、灌木层0．749（占2．91％）、木质藤本层0．431（占1．67％）和草本层0．612（占2．38％）。乔木层NPP分配为（t·hm－2·a-1）：凋落量11．566、叶虫食量0．694和生物量增量11．712。结果表明：西双版纳虽地处热带北缘，当地原始热带湿性季节雨林同样具有典型热带雨林一样高的生物量和NPP。
Using biomass regression model and productivity equation, the biomass and net primary production (NPP) of the pristine tropical wet-seasonal rain forest in Xishuangbanna were studied. The total biomass of rainforest was 692.590 t · hm-2, and the total biomass was 98.66% for arbor layer, 0.76% for shrub layer, 0.50% for woody layer and 0.09% for herb layer %, Biomass mainly concentrated in the arbor layer. The annual average NPP of rainforest was 25.764 t · hm-2 · a-1, and the NPP of each level was (t · hm-2 · a-1): 23.972 of arbor layer (accounting for 93.04% ), Shrub layer 0.749 (accounting for 2.91%), woody layer 0.431 (accounting for 1.67%) and herb layer 0.612 (accounting for 2.38%). The tree layer NPP distribution (t · hm-2 · a-1): the amount of litter 11.566, insect population 0.694 and biomass increment 11.712. The results show that although the Xishuangbanna is located in the northern margin of the tropical region, the native pristine tropical seasonal rainforest also has the same biomass and NPP as the typical tropical rainforest.