摘要
本试验分别采用相对生长法和全株收获法调查分析了新疆喀纳斯国家自然保护区内西伯利亚落叶松(Larix sibirica)、西伯利亚云杉(Picea obovata)和西伯利亚红松(Pinus sibirica)等3种主要针叶林生物量的分配特征。结果表明:3个树种不同器官生物量分配存在差异,西伯利亚云杉和西伯利亚红松均为树干>树根>树枝>树皮>树叶,西伯利亚落叶松为树干>树根>树皮>树枝>树叶;树干的生物量占总生物量的96%以上;3种优势针叶树种的生物量(W)与胸径(D)和树高(H)的函数表达式为W=a(D2 H)b,回归系数均在0.88以上;3种林分总生物量排序为西伯利亚落叶松-西伯利亚云杉针叶混交林>西伯利亚落叶松-西伯利亚云杉-西伯利亚红松针叶混交林>西伯利亚云杉针叶纯林;在垂直分布上,西伯利亚落叶松-西伯利亚云杉混交林和西伯利亚云杉纯林均为乔木层>凋落物层>草本层>苔藓层>灌木层;西伯利亚落叶松-西伯利亚云杉-西伯利亚红松混交林则为乔木层>凋落物层>苔藓层>草本层>灌木层;3种林分的乔木和灌木层生物量地上部分大于地下部分;草本层生物量表现为地下部分大于地上部分。
As a number of the basic features of forest ecological system, forest biomass is an important index to evaluate the forest carbon storage. The forest biomass distribution characteristics of three main coniferous tree species of Larix sibiric, Picea obovata and Pinus sibirica in Kanas National Na- ture Reserve were analyzed using the method of relative growth and full harvest. The results showed that .. （1） Organ biomass of different tree species were different. The sequence of different organ bio- mass of P. obovata and P. sibirica was trunk〉roots〉branches〉bark〉leaf,andtrunk〉root〉bark〉 branches〉leaf for L. sibirica. （2）The relationship between biomass, height and DBH of the three main tree species was showed by the function of W：a（D2 H）b. The regression coefficients were all higher than 0.88. （3）The total biomass distribution in the three different coniferous stands performed as the sequence of L. sibirica- P. obovata〉 L. sibirica-- P. obovata-- P. sibirica~ P. obovata pure for- est. （4）The biomass of vertical distribution in the mixed coniferous forest of L. sibirica--P, obovata and P. obovata pure forest followed the order of arbor layer〉litter layer〉herb layer〉moss layer〉 shrub layer,and the mixed forest of L. sibirica - P. obovata - P. sibirica followed the order of arbor layer〉litter layer 〉 moss layer 〉 herb layer 〉 shrub layer. （5）The biomass of shrub layer of aboveground was higher than that of the underground,and the biomass of the herb layer aboveground was lower than that of the underground.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
2014年第4期14-19,24,共7页
Journal of Hebei Agricultural University
基金
新疆林业生态服务功能监测与评估[xjlk(2013)001号]
新疆阿尔泰山森林生态系统定位研究站开放基金
