毛竹林地上生物量与胸径的分形关系  

Relationship between above-ground biomass and DBH for Phyllostachys edulis stands based on fractal theory

作　　者：商珍珍[1,2] 周国模[1,2] 杜华强[1,2] 

机构地区：[1]浙江农林大学浙江省森林生态系统碳循环与固碳减排重点实验室,浙江临安311300 [2]浙江农林大学环境与资源学院,浙江临安311300

出　　处：《浙江农林大学学报》2013年第3期319-324,共6页Journal of Zhejiang A&F University

基　　金：浙江省自然科学基金资助项目(Y3100427);国家自然科学基金资助项目(31070564);浙江省林业碳汇与计量创新团队项目(2012R10030-01)

摘　　要：竹林是中国亚热带地区的特殊林分,具有巨大的生物量和碳储量,在区域生态系统中占有重要的地位。以毛竹Phyllostachys edulis为例,利用分形理论研究了毛竹地上生物量与胸径的分形关系。研究结果表明:毛竹地上生物量与胸径存在分形特征,在生物量空间分布和累积上符合自相似特性,分形维数越大,生物量空间增加越快,且按指数函数规律增长,空间增长率为1.047 9;在年龄动态方面,分形维数定量描述了不同度数毛竹生物量在空间上动态平衡关系,1度、2度和3度毛竹地上生物量在空间分布和累积上没有差异,基本上遵循分形维数为1.93的规律,接近按2维数方式的变化。Fraetal theory was used to determine the relationship between above-ground biomass （AGB） and diameter at breast height （DBH） for moso bamboo （Phyllostachys edulis）. Results indicated a fractal relation-ship between AGB and DBH. Spatial distribution and accumulation of moso bamboo were characterized as statistical serf-similarity. For the power function, with an increase in fraetal dimensions, biomass increased （R2 = 0.847 4） having an increment ratio of 1.047 9. However, for moso bamboo of different ages, fractal dimensions quantitatively describing the dynamic equilibrium relationships between AGB and DBH for three kinds of du （one year bamboo or new birth bamboo is referred as 1 du, 2-3 years as 2 du, and 4-5 years as 3 du, and so on）in bamboo showed a similar fractal dimension （1.934 6 for 1 du, 1.933 9 for 2 du, and 1.924 4 for 3 du）. Also, there were no obviously differences between spatial distribution and accumulation of AGB for different du with the growth of moso bamboo generally following the changing pattern for a fractal dimension of 1.93 [Ch, 3 fig. 1 tab. 19 ref.]

关 键 词：森林测计学 毛竹 地上生物量 胸径 分形维数 

分 类 号：S758.5[农业科学—森林经理学]