广西主要树种热值研究

探讨树种不同器官间的植物热值规律,可为这些树种的能量特征和生态效率研究提供基础资料和科学依据。通过对广西12个主要树种不同器官的热值测定,结果表明：各主要树种的加权平均干重热值和去灰分热值分别在18.56～20.41 kJ/g和19.11～20.57 kJ/g;树种各器官热值表现为叶片含量最高,各器官热值含量顺序一般为叶〉枝〉皮〉干,或叶〉皮〉枝〉干;树种各器官的灰分含量在0.18%～14.48%,树种各器官灰分含量一般表现为叶〉皮〉枝〉干。

The Caloric Values of Main Tree Species in Guangxi

By studying the caloric values of different organs from tree species,which might provide scientific fundamental data for studying energy flow and ecological efficiency.This paper analyzed the caloric values of different organs from 12 main tree species in Guangxi province,the results showed that,the weighted average gross caloric values were in the range of 18.56 ～ 20.41 kJ/g,the weighted average ash-free caloric values were in the range of 19.11～20.57 kJ/g;ash contents of different tree species were in the range of 0.18 %～14.48 %,the order of ash contents from different organs was leaves barks branch trunk.