北京市3种针叶绿化树种根系结构分析  

Root morphology of three greening conifer species in Beijing

作　　者：刘丽娜[1] 徐程扬[1] 段永宏[1] 周睿智[1] 代向阳 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,100083 [2]浙江林学院环境科技学院

出　　处：《北京林业大学学报》2008年第1期34-39,共6页Journal of Beijing Forestry University

基　　金：教育部博士学科点专项基金项目(20050022007);国家自然科学基金项目(30571483)。

摘　　要：该文从根系长度、表面积、体积、根系序级、根系数量等方面对北京市油松、侧柏、白皮松3种针叶绿化树种的根系形态特征进行了对比分析。结果表明:3个树种在根系结构上有良好的一致性,即直径<1mm的根系连接数量、根系累计长度以及表面积占据总量的多数;直径<2mm的根系数量、根系长度和根系表面积是根系总量的主体;0～3序级根系连接数和根系表面积占所有序级根系连接数和表面积的70%以上。根系形态分析结果显示,白皮松根系分枝能力弱于侧柏和油松,并以油松根系分枝强度为最大。Root morphological characteristics, such as length, surface area, volume, orders and number of root system of three greening conifer species——Platycladus orientalis, Pinus tabulaeformis and Pinus bungeana, were analyzed in the paper. The results showed that root morphology of the three species was consistent well, in which the root link, accumulative length and surface area of roots in d 〈 1 mm accounted for the majority of total roots, while roots in d 〈 2 mm were the principal part in root system. And link, surface area of roots in order of 0-3 accounted for 70 % of total roots. Branching capability of the root system of Pinus bungeana was weaker than that of Platycladus orientalis and Pinus tabulaetormis, and that of Pinus tabulaetormis root was the most intensive.

关 键 词：侧柏 油松 白皮松 根系结构 

分 类 号：S718.3[农业科学—林学]