基于根系发育分级的砂壤土下成熟林木根系构型分析

祝维,余立璇,赵德海,贾黎明

Architectural analysis of root systems of mature trees in sandy loam soils using the root development classification

ZHU Wei,YU Li-Xuan,ZHAO De-Hai,JIA Li-Ming

表2 毛白杨及刺槐3个根系系统的被追踪根系终点状态描述

Table 2 Description of end states of the tracked roots in three root systems

纯林毛白杨 Populus tomentosa in pure stand 混交林毛白杨 P. tomentosa in mixed stand 混交林刺槐 Robinia pseudoacacia in mixed stand 追踪根系编号 Code of the tracked roots 距离/深度 Distance/ depth (m) 终点状态 End state 距离/深度 Distance/ depth (m) 终点状态 End state 距离/深度 Distance/ depth (m) 终点状态 End state 水平根 Lateral root 1 3.3 萌生幼树 Sapling from root sprouting 8.6 与邻株连生 Root grafted with neighbor tree 6.5 垂直向下生长 Vertically downward growth 2 5.1 与邻株连生 Root grafted with neighbor tree 11.1 分叉 Branching 8.2 分叉 Branching 3 6.1 垂直向下生长 Vertically downward growth 13.5 垂直向下生长 Vertically downward growth 8.5 垂直向下生长 Vertically downward growth 4 6.4 垂直向下生长 Vertically downward growth 5 7.6 垂直向下生长 Vertically downward growth 垂直根 Vertical root 1 3.1 到头, 末端直径0.3 mm To the end, root tip diameter 0.3 mm 4.0 到头, 末端长瘤 To the end, with tumor 2.7 竖直向上生长 Vertically upward growth 2 4.3 到头, 末端直径0.3 mm To the end, root tip diameter 0.3 mm 4.3 到头, 末端直径0.5 mm To the end, root tip diameter 0.5 mm 3.7 到头, 末端直径0.3 mm To the end, root tip diameter 0.3 mm 3 5.7 到头, 末端直径0.25 mm To the end, root tip diameter 0.25 mm 4.3 到头, 末端直径0.76 mm To the end, root tip diameter 0.76 mm 5.9 到头, 末端直径0.02 mm To the end, root tip diameter 0.02 mm 4 6.4 向西转弯 Bend to the west