摘要
通过对黄土高原50个主要树种热值和化学成分的测定,发现树种间热值的差异主要与树木体内所含的苯-乙醇抽出物和木质素的含量呈二元线性相关.50个树种的苯-乙醇抽出物和木质素含量的平均值分别为6.59和27.41％,针叶树的苯-乙醇抽出物含量(17.95％)明显高于阔叶树(5.87％),木质素含量则差异极小.苯-乙醇抽出物和木质素含量对树木热值的显著影响主要是因为它们具有极高的发热量.两种化学成分的总发热量与树木热值之间具有紧密的线性关系.
By determining the calorific values and the 2 chemicalcompositions of 50 main tree species in Loess plateau,it was found that the tree calorific values appear to be linearly correlated with the contents of the substance dissolved in benzene-alconol solution and the lignin.The substance's and the lignin's average contents of all those species are respectively 6.59% and 26.57%.The substance's content of coniferous tree (17.94) is more than that of broad-leaved tree but the lignin's contents nearly the same.Their significant influence on tree calorific values is mainly due to the substance's and lignin's high calorific value.The sum of calorific values of these two kinds of substances is linearly correlated with the tree calorific values determined.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
1993年第2期54-62,共9页
Journal of Beijing Forestry University
关键词
树木
化学成分
树木热值
factor affecting calorific value of tree,substance dissolved in benzene-alcohol solution,lignin
