河北省油松单木生物量及其分配格局分析

The study on the individual biomass and biomass allocation pattern of Pinus tarbulaeformis Carr. in Hebei

森林生物量是反映森林生态环境的重要指标,是研究许多森林问题和生态问题的基础。本研究以河北省油松林调查数据为基础,借助Excel、SPSS11.0和ForStat统计分析软件对河北省油松单木生物量和分配格局进行分析,结果表明:(1)油松单木胸径与树高、树叶生物量、树干生物量、树枝生物量、树根生物量和全树总生物量均呈极显著正相关;树高与胸径、树干生物量、树枝生物量、树叶生物量、树根生物量和全树总生物量呈极显著正相关。(2)各调查地油松各器官的生物量,其中树干的平均值为50.55%,树枝的平均值为18.93%,树根的平均值为15.52%,树叶的平均值为15.00%。(3)随着单木生物量的增加,单木各器官树干、枝条和树叶的生物量分配比例保持相对稳定。

Forest biomass as an important indicator to reflect the forest ecological environment,is the foundation for studying the problems of forests and ecology.Based on the surveyed data of Pinus tabulaeformis Carr. forests in Hebei Province,the paper discusses the individual biomass and its allocation pattern with Excel,SPSS11.0 and Forstat statistical analysis software.The results show that：（1） The individual DBH and height,the leaf biomass,the trunk biomass,the branch biomass,the root biomass and the total biomass of single tree are significantly correlated.（2） The biomass distribution of each organ per tree in all surveyed plots shows 50.55% average percentage of trunk biomass,followed by 18.93% average percentage of branch biomass,the 15.52% average percentage of root biomass,and 15.00% average percentage of leaf biomass.（3） With the increasing of individual biomass,the biomass percentage of trunk,branch and leaf is relatively stable.