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1 毛白杨纯林与毛白杨刺槐混交林林地基本信息表

Table 1 General information of sample plots in Populus tomentosa stand and mixtures with P. tomentosa and Robinia pseudoacacia

林型 Stand type 树种 Tree species 平均胸径 Average DBH (cm) 平均树高 Average tree height (m) 株行距 Plant & row spacing (m) 平均冠幅 Average crown width (m) 间伐措施 Thinning treatment 毛白杨纯林 Populus tomentosa stand 毛白杨 P. tomentosa 36.1 35.5 6 × 6 7.0 造林后第十年间伐除去刺槐, 以前的混交林成为现有纯林 All R. pseudoacacia trees were removed from mixed-species stand after 10 years of planting, resulting in P. tomentosa pure stand 毛白杨×刺槐混交林 Mixtures with P. tomentosa and Robinia pseudoacacia 毛白杨 P. tomentosa 37.0 26.4 3 × 6 6.6 无 None 毛白杨×刺槐混交林 Mixtures with P. tomentosa and R. pseudoacacia 刺槐 R. pseudoacacia 25.1 21.1 3 × 6 8.6 无 None