西宁市七种造林树种热值与主要化学成分关系研究  

The Relationship between Calorific Value and Main Chemical Compositions of Seven Tree Species for Afforestation in Xining City

作　　者：刘宁 郑淑霞[2] 单笑笑 王彬[2] 马玉林[2] LIU Ning;ZHEN Shu-xia;SHAN Xiao-xiao;WANG Bin;MA Yu-lin(College of Agriculture and Animal Husbandry,Qinhai University,Xining,Qinhai 810016;Qinhai Academy of Agriculture and Forestry,Xining,Qinhai 810016;Pingshan Foestry Work Station,Pingshan,Heibei 050499)

机构地区：[1]青海大学农牧学院 [2]青海省农林科学院,西宁810016 [3]河北省平山县林业工作总站,河北平山050499

出　　处：《陕西林业科技》2022年第5期5-11,共7页Shaanxi Forest Science and Technology

基　　金：青海省成果转化和推广计划项目(2016-NK-149);西宁周边山地人工林枯落物快速分解关键技术研究与示范项目(2020-NK-124)。

摘　　要：给西宁市抗火树种选择提供依据,对7种主要造林树种树叶、树枝、树皮的热值及化学成分进行测定,运用Pearson相关性分析比较各树种热值与化学成分相关性,采用加权赋值法对各树种的抗火性能进行综合评价。结果表明,针叶树种的去灰分热值整体高于阔叶树种;树种间及同一树种不同部位间化学成分含量差异明显,各树种不同部位化学成分含量未表现出同一规律;7个树种的去灰分热值与粗蛋白、灰分含量均呈显著正相关,白榆、沙棘、四翅滨藜的去灰分热值与粗脂肪含量呈显著正相关,除祁连圆柏外其它树种的去灰分热值与粗纤维含量呈显著负相关,油松、白榆、四翅滨藜的去灰分热值与可溶性糖含量呈显著正相关,祁连圆柏、白榆的去灰分热值与挥发油含量呈极显著正相关;从化学成分角度综合评价,7个常用树种抗火性能从高到低排序为四翅滨藜>白榆>青杨>沙棘>青海云杉>油松>祁连圆柏,抗火性能强者可作为防火生物隔离带优选树种。In order to explore the correlation between calorific value and chemical composition of main afforestation tree species in Xining city,the calorific value and chemical composition of leaves,branches and bark of seven main afforestation tree species were measured.Pearson correlation analysis was applied to compare the correlation between calorific value and chemical composition of each tree species,and the weighted assignment method was used to comprehensively evaluate the fire resistance of each tree species.The results showed that the ash free calorific value of conifer species was higher than that of broadleaf species.There were significant differences in chemical composition among tree species and among different parts of the same tree species,but the chemical composition in different parts of each tree species did not show a uniform law.Of seven species,ash free calorific values are in significantly positive correlation with crude protein and ash content;ash free calorific values of white elm,hippophae and Atriplex canescens are in significantly positive correlation with crude fat content.Ash free calorific values of Pinus tabulaeformis,white elm,Atriplex canescens except Sabina przewalskii are in significantly positive correlation with soluble sugar content.The ash free calorific values of Sabina przewalskii and white elm are positively correlated with the content of essential oil.According to the comprehensive evaluation of chemical constituents,the fire resistance of the 7 tree species from high to low was as follows:Atriplex canescens>white elm>Populus chinensis>Seabuckthorn>Picea crassifolia>Pinus tabulaeformis>Sabina przewalskii.The species of strong fire resistance can be applied as the one planted as biological isolation zone for fire control.

关 键 词：干质量热值 去灰分热值 化学成分 抗火性能 造林树种 西宁市 

分 类 号：S731.2[农业科学—林学]