不同生境下荒漠植物红砂-珍珠猪毛菜混生根系的垂直分布规律

单立山,苏铭,张正中,王洋,王珊,李毅

Vertical distribution pattern of mixed root systems of desert plants Reaumuria soongarica and Salsola passerina under different environmental gradients

Li-Shan SHAN,Ming SU,Zheng-Zhong ZHANG,Yang WANG,Shan WANG,Yi LI

表3 不同生境下单生和混生红砂与珍珠猪毛菜的根系消弱系数(β)与决定系数(R2)(平均值±标准误差)

Table 3 The root extinction coefficients (β) and coefficient of determination (R2) in Reaumuria soongarica and Salsola passerina of monocultural and mixed communities in different habitats (mean ± SE)

物种 Species 生长方式 Interspecific relationship 灵武 Lingwu 张掖 Zhangye 酒泉 Jiuquan β R2 β R2 β R2 红砂 R. soongarica 单生 Monocultural 0.934β9 ± 0.002β4 0.981β8 0.941β2 ± 0.007β8 0.929β1 0.942β4 ± 0.011β2 0.936β7 混生 Mixed 0.934β9 ± 0.011β2 0.962β0 0.942β1 ± 0.025β6 0.897β1 0.943β7 ± 0.004β5 0.968β6 珍珠猪毛菜 S. passerina 单生 Monocultural 0.875β8 ± 0.007β8a 0.949β9 0.921β7 ± 0.026β1 0.947β6 0.896β5 ± 0.004β9 0.902β3 混生 Mixed 0.925β3 ± 0.006β0b 0.986β1 0.919β3 ± 0.025β1 0.870β8 0.918β1 ± 0.003β9 0.923β4