漓江河岸带植物功能性状变异与关联

梁士楚,刘润红,荣春艳,常斌,姜勇

Variation and correlation of plant functional traits in the riparian zone of the Lijiang River, Guilin, Southwest China

Shi-Chu LIANG,Run-Hong LIU,Chun-Yan RONG,Bin CHANG,Yong JIANG

表2 漓江河岸带群落水平功能性状与环境因子冗余分析(RDA)中的前2轴环境变量解释方差和显著性检验

Table 2 The explained variance of environmental factors and their significant analysis in the first two axes in redundancy analysis (RDA) ordination

环境因子 Environmental factor RDA1 RDA2 R2 p 有机质 Soil organic matter (g·kg-1) 0.40 0.91 0.34 0.002** 全氮 Soil total nitrogen (g·kg-1) -0.45 0.88 0.19 0.032* 有效氮 Soil available nitrogen (mg·kg-1) -0.74 -0.66 0.57 0.001*** pH -0.26 0.96 0.21 0.015* 干扰强度Disturbance intensity -0.16 0.98 0.63 0.001*** 距离河岸距离 Distance (m) -0.85 0.51 0.29 0.004** 降水量 Precipitation (mm) -0.66 0.74 0.79 0.001*** 温度 Temperature (℃) -0.97 0.22 0.50 0.001*** 海拔 Elevation (m) 0.92 -0.38 0.57 0.001*** 河段 Reach -0.90 0.41 0.88 0.001***