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2 环境胁迫梯度和生长方式对红砂和珍珠猪毛菜比根长(SRL)、比表面积(SRA)、根系生物量(RB)和根系消弱系数(β)影响的双因素方差分析(F值)

Table 2 Two-way ANOVA (F-values) of the effects of environmental stress gradient and community type on specific root length (SRL), specific root surface area (SRA), root biomass (RB) and root extinction coefficients (β) in Reaumuria soongarica and Salsola passerina

变异来源 Source of variation 红砂 R. soongarica 珍珠猪毛菜 S. passerina SRL SRA RB β SRL SRA RB β 环境梯度 Environment gradient 0.444 1.237 121.887** 2.104 1.554 1.363 28.556** 0.844 生长方式 Community type 0.224 1.212 84.367** 2.194 0.284 1.083 106.824** 3.265 环境梯度×生长方式 Environment gradient × community type 2.797 0.080 14.944** 2.303 1.978 0.088 18.258** 1.398