水土保持通报2011，Vol.31Issue(4)：154-158,5.
白桦根系力学特性的定量研究
Mechanical Characteristics of Betula Platyphylla Root System
摘要
Abstract
The arbor root of Betula platyphylla was investigated in North China and the mechanical characteristics of arbor root system were quantitatively researched based on analysis of variance by using the result of root tensile test as basic data.According to the experimental design criteria,three indexes,including rate,root length and diameter,were selected as influence factors reflecting birch root mechanical characteristics.Four indexes,including root tensile resistance,root tensile strength,elastic modulus and limit extensile rate,were selected as responding factors.The results showed that root diameter had significant effects on root tensile resistance,root tensile strength and limit extensile rate,both root length and tensile rate had significant effects on elastic modulus and limit extensile rate.As the four responsive indexes were concerned,there was no interaction between rate of extensile and root length.As for tensile strength and tensile resistance,the interaction between rate of extensile and root diameter,as well as root length and root diameter both existed and had significant expressions at different levels.As elastic modulus and limit extensile rate were concerned,the interaction between root length and root diameter was not significant,while the interaction between rate of extensile and root diameter was significant.关键词
白桦根系/力学特性/方差分析/交互效应Key words
Betula platyphylla root system/mechanical characteristics/analysis of variance/interaction effect分类
农业科技引用本文复制引用
王萍花,陈丽华,冀晓东,周朔,吕春娟,蒋坤云..白桦根系力学特性的定量研究[J].水土保持通报,2011,31(4):154-158,5.基金项目
中国教育部博士基金“林木根系拉伸特性的试验研究” （）
国家自然科学基金项目“林木根系基本力学性能研究” （）
国家自然科学基金青年基金项目“林木根系与土壤摩擦锚固性能研究” （）
