不同秆龄慈竹竹秆含水率与生物量的分配特征及其生物量模型的构建  

Biomass Distribution Characteristics and Model Construction of Neosinocalamus affinis at Different Ages

作　　者：汪淑芳[1] 梁梓[1] 杨瑶君[1] 刘忠[1] 黄明远[1] 周静[1] 

机构地区：[1]乐山师范学院生命科学院林竹生态研究中心,四川乐山614004

出　　处：《西部林业科学》2013年第1期42-45,共4页Journal of West China Forestry Science

基　　金：四川省教育厅科研项目(12ZB051);四川省基础研究项目(010JY0038);四川省科技支撑项目(2010JZ0007)

摘　　要：在对不同秆龄的慈竹竹秆的含水率与生物量分配特征进行研究的基础上,依据慈竹竹秆的生物量主要受其秆龄的影响而分别构建了不同秆龄,即1年、2年、3年、4年、5年秆龄慈竹竹秆生物量与其秆的胸径、枝下高、全高等生长因子的拟合数学模型。研究结果表明,慈竹竹秆的含水率随其秆龄及秆高的增加而呈下降趋势;竹秆生物量从秆基到秆稍而逐渐降低。经多元线性回归和幂函数拟合而构建的生物量模型可依其竹秆各生长因子的测定数据来估算不同秆龄慈竹竹秆的生物量。Taking the Neosinocalamus affinis stands at Leshan city of Sichuan province as the materials, the water content and biomass distribution characteristics of culms at different ages were studied. Considering that the bio-mass of Neosinocalamus affinis was affected by the culm age, the mathematical fitting model between the biomass and DBH, height under branch and height of the culms of 1 year old, 2 years old, 3 years old, 4 years old and 5 years old were constructed respectively. The results indicated that the water content in culm showed the tendency of decrease with the increase of age and culm height. The biomass of culm decreased from the base part to the shoot. The biomass modeXs established in accordance with the multiple liner regression and power function fitting could es-timate the biomass of different age culm provided with the determination data of different growth parameters.

关 键 词：秆龄 慈竹竹秆 含水率 生物量 分配特征 模型构建 

分 类 号：S795.5[农业科学—林木遗传育种]