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根据不同生活型树种标准木实测数据,比较个体生物量器官分配状况以探索其生长策略;同时建立了该地区灌木层主要树种的生物量回归模型,并与全收割法测量数据比较,检验模型估算精度。结果表明,相对常绿树种,天童灌木层落叶树种分配较多的生物量于地上部分来获取更多光照资源以满足自身生长需要;灌木树种分配较多生物量于树叶,相比之下,乔木树种则更多地累积树干和根系生物量;各生活型树种器官生物量模型以幂函数为主,树干和地上部分模型拟合度最好;应用于样地生物量估算,树干模型精度最高,树叶模型精度最低;地上部分生物量回归模型能较为准确地估算灌木层生物量,与实测值误差仅为0.47%,表明该模型适用于地区灌木层生物量的测算。
According to the measured data of standard wood species of different living species, biomass allocation status of individual was compared to explore its growth strategy. At the same time, the biomass regression model of main tree species in shrub layer was established and compared with the data of total harvesting method to test the model estimation Accuracy. The results showed that, compared with the evergreen tree species, the deciduous tree species in Tertiary shrub layer distributed more biomass on the aerial part to obtain more light resources to meet their own growth needs; Shrub species distributed more biomass on the leaves, The tree species accumulated more trunk and root biomass. The biomass model of each species was dominated by the power function, and the trunk and shoot models had the best fitting degree. The biomass of the tree species was the highest, The accuracy of the leaf model was the lowest. The above-ground biomass regression model could accurately estimate the shrub biomass, which was only 0.47% of the measured value, indicating that the model is suitable for the estimation of shrub biomass in the region.