铺装对悬铃木根系空间分布影响研究  

Study on the effect of pavement on the spatial distribution of Platanus spp.root system

作　　者：吴松成 李玲莉 田中 朱自林 WU Song-cheng;LI Ling-li;TIAN Zhong;ZHU Zi-lin(Chongqing Landscape and Gardening Research Institute,Chongqing 401329,China;Chongqing Urban Landscape Engineering Technology Research Center,Chongqing 401329,China)

机构地区：[1]重庆市风景园林科学研究院,重庆401329 [2]重庆市城市园林绿化工程技术研究中心,重庆401329

出　　处：《湖北农业科学》2022年第15期168-171,243,共5页Hubei Agricultural Sciences

基　　金：重庆市科技计划项目(cstc2011pt-gc80019)。

摘　　要：以南京市热河路、北京西路、市政府大院中胸径≥1 m的行道树悬铃木(Platanus spp.)为试验对象,利用树木雷达检测系统,在距树干0.5、1.0和1.5 m处,对不同铺装条件下悬铃木直径≥3 cm的根系进行探测。研究表明,随着距树干距离和土壤深度的增加,悬铃木直径≥3 cm的根数逐渐增多;草坪覆盖下悬铃木直径≥3 cm的根数和根系分布范围(12.35~120.00 cm)均小于铺装条件下的;当树池外全部为硬质铺装时,在距树干1.5 m处,65.83%直径≥3 cm的根系分布在深度40~150 cm土层中,根系分布的最深深度达148.07 cm。由此可见,铺装对源自地上部分的水分和养分的阻隔程度越大越促进根系深扎,根系分布最浅深度与铺装面砖或硬化铺装的厚度相关。The avenue trees Platanus spp.with DBH≥1 m in Rehe Road,Beijing West Road and the compound of Nanjing municipal government were taken as the experimental object,and the root system with diameter≥3 cm under different paving conditions was de⁃tected by using the tree radar detection system at the circle of 0.5 m,1.0 m and 1.5 m away from the trunk.The results showed that with the increase of distance from the trunk and soil depth,the number of roots with diameter≥3 cm gradually increased.The root number and root distribution range(12.35~120.00 cm)of Platanus spp.with diameter≥3 cm under lawn mulching were less than those under pavement.When all the outside of the tree pool is hard paved,65.83%of the roots with diameter≥3 cm distributed in the depth of 40~150 cm soil layer at the circle of 1.5 m away from the trunk,and the deepest degree of root distribution is 148.07 cm.It can be seen that the greater the barrier degree of pavement to the water and nutrients from the above ground part,the deeper the root system is pro⁃moted.The shallowest depth of root system distribution is related to the thickness of paved face brick or hardened pavement.

关 键 词：悬铃木(Platanus spp.) 铺装 根系空间分布 

分 类 号：Q949.751.6[生物学—植物学]