冀北山地3种典型林分类型生物量分配格局研究  

The biomass distribution pattern of three typical forests in the northern mountainous regions of Hebei province

作　　者：黄秋娴[1] 张健强[2] 杨新兵[1] 

机构地区：[1]河北农业大学林学院,河北保定071000 [2]河北省邯郸市林业局,河北邯郸056000

出　　处：《河北农业大学学报》2012年第6期55-58,90,共5页Journal of Hebei Agricultural University

基　　金：国家林业公益性行业科研专项:"中国森林净生产力多尺度长期观测与评价研究(200804006/rhh-09)";河北省林业厅科技项目"冀北山地典型林分类型结构特征研究"

摘　　要：森林生物量是森林生态系统的功能指标,也已成为森林经营的重要指标之一。本研究对冀北山地3种典型林分的乔木、灌木、草本和死地被物生物量进行了调查和比较。结果表明:油松蒙古栎混交林群落总生物量最大,为189.89t/hm2,落叶松桦木混交林和山杨桦木混交林总生物量差别不大,分别为119.76t/hm2和117.56t/hm2。3种林分类型不同层次生物量分配比例排序均为:乔木层>死地被物层>灌木层>草本层;主要乔木树种各器官生物量分配规律均为:树干>树根>树枝>树叶,灌木层和草本层生物量均表现为地下生物量大于地上;死地被物层生物量均表现为半分解层大于未分解层。Forest biomass is both a function index of forest ecosystem and an important indicator for forest management.The biomass of arbors,shrubs,herbs and litter in three kinds of typical forest stands in the northern mountainous regians of Hebei province were investigated and compared.The results showed that the total biomass of the mixed forest of chinese pine-mongolian oak（189.89 t/hm^2） is the highest among the three community types.There was no significant difference in biomass between the mixed forest of larch and birch and the mixed forest of aspen-birch and which were 119.76 t/hm^2 and 117.56 t/hm^2 respectively.The biomass distribution in different layers in the three kinds of different forestes follows the order： arbor layer 〉litter layer〉shrub layer 〉herb layer,and the order of the biomass distribution of main arbor organ is as follows： trunk〉tree root〉branch〉leaves. The biomass of shrub layer and herb layer of aboveground were lower than those of underground. The biomass of the semi-decomposition litter was higher than that of un-decomposition litter.

关 键 词：冀北山地 生物量 死地被物 格局 

分 类 号：S718.556[农业科学—林学]