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当前位置: 首页 > 文章 > 浙南山区6种优势乔木植物根系的力学特性研究 浙江林业科技 2010,30 (3) 6-11
Position: Home > Articles > Mechanic Properties of Root Systems of Six Dominant Tree Species in Mountainous Area of the Southern Zhejiang Journal of Zhejiang Forestry Science and Technology 2010,30 (3) 6-11

浙南山区6种优势乔木植物根系的力学特性研究

作  者：
李贺鹏;岳春雷;陈友吾;江波;袁位高;李建兵
单  位：
浙江省安吉县良朋镇林业站;浙江省林业科学研究院
关键词：
植物根系;力学特性;抗拉强度;抗拉力;中亚热带常绿阔叶林
摘  要：
为研究乔木植物固土护坡的力学机制,以中亚热带常绿阔叶林为例,对浙江南部的山体滑坡、泥石流易发区内优势植物:苦槠(Castanopsis sclerophylla)、甜槠(C.eyrei)、枫香(Liquidambar formosana)、南酸枣(Choerospondias axillaris)、马尾松(Pinus massoniana)和杉木(Cunninghamia lanceolata)6种乔木植物根系进行室内力学比较试验。结果表明:不同植物根系具有不同的抗拉力与抗拉强度;所有植物的单根抗拉力都随着直径增加而增大,其中杉木的抗拉力最低,甜槠、枫香和马尾松居中,苦槠和南酸枣的较高;6种植物直径与抗拉力间的拟合函数中以幂函数最为适合,并且6种植物直径与抗拉力间成幂函数正相关关系;6种植物根系的抗拉强度随着直径增加而降低,并且所有植物抗拉强度与其直径成幂函数负相关关系,其中杉木的抗拉强度明显低于其它树种;苦槠和南酸枣的固土护坡作用较大,枫香、甜槠、马尾松居中,而杉木的则最差。
译  名：
Mechanic Properties of Root Systems of Six Dominant Tree Species in Mountainous Area of the Southern Zhejiang
作  者：
LI He-peng1,YUE Chun-lei1,CHEN You-wu1,JIANG Bo1,YUAN Wei-gao1,LI Jian-bing2(1.Zhejiang Forestry Academy,Hangzhou 310023,China;2 Anji Liangpeng Forestry Station of Zhejiang,Anji 313309,China)
关键词：
root system;mechanic property;tensile strength;tensile force
摘  要：
Mechanical properties of the root systems were experimented on six tree species in mid-subtropical evergreen broad-leaved forest of the southern Zhejiang.The species included two evergreen trees(Castanopsis sclerophylla and C.eyrei),two deciduous ones(Liquidambar formosana and Choerospondias axillaris) and two coniferous ones(Pinus massoniana and Cunninghamia lanceolata).The result showed that they had different tensile forces,and the force of single root of each species increased with diameter,but that of C.sclerophylla and Ch.axillaris had the largest,followed by that of C.eyrei,L.formosana and P.massoniana,while that of C.lanceolata had the smallest.Power function was fitted for the relationship between diameter and tensile force of tested six species among fitting functions,and it indicated positive.While root tensile strength decreased with diameter,and power function indicated negative correlation.The result demonstrated that tensile strength of C.lanceolata was evidently lower than that of the other 5 tree species.The experiment concluded that C.sclerophylla and Ch.axillaris had the best effect for slope stabilization,followed by L.formosana,C.eyrei and P.massoniana,and the last was C.lanceolata.

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