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以不同龄级(1~5年生)南川木波罗幼苗为研究对象,研究其生物量及分配,并利用苗高(H)、基径(D)及HD2估测单株木及其器官生物量的适合模型。结果表明:(1)随着苗龄的增加,单株生物量及各器官生物量随之增加,其中枝生物量增加幅度最大;(2)地上部分各器官生物量分配率表现为:干生物量>叶生物量>枝生物量;(3)地下部分各龄级根系生物量分配以主根和粗根为主,表现为:主根>粗根>细根,地上部分生物量分配率高于地下部分,并最后趋于稳定;(4)以基径(D)作为自变量优于利用株高(H)和HD2建立生物量预测模型,并且多以幂函数为最佳,建立的生物量预测模型中,除细根生物量预测模型较差外,其它预测模型效果都较好,相关系数均达到极显著水平,表明利用本文建立的估测南川木波罗各器官生物量模型是可行的。
The seedlings of A. chinensis from different ages (1-5 years old) were studied for their biomass and distribution, and the individual plants and their organism were estimated by seedling height (H), base diameter (D) and HD2 The amount of fit model. The results showed that: (1) With the increase of seedling age, the biomass per plant and the biomass of all organs increased with the increase of shoot biomass. (2) The biomass allocation rate of various organs in aerial part showed as follows: Biomass> leaf biomass> shoot biomass. (3) The root biomass distribution of underground parts of different ages was dominated by main root and coarse root, which showed that the main root> coarse root> fine root, the aboveground biomass allocation rate was higher than underground (4) The biomass (D) was better than the biomass (H) and HD2 biomass prediction model based on the base diameter (D) All models except the fine root biomass forecasting model were better than others, and all the other models reached the most significant level, which indicated that it is feasible to estimate biomass of all organs in this paper.