内蒙古典型草原植物叶片碳氮磷化学计量特征的季节动态

熊星烁, 蔡宏宇, 李耀琪, 马文红, 牛克昌, 陈迪马, 刘娜娜, 苏香燕, 景鹤影, 冯晓娟, 曾辉, 王志恒

Seasonal dynamics of leaf C, N and P stoichiometry in plants of typical steppe in Nei Mongol, China

XIONG Xing-Shuo, CAI Hong-Yu, LI Yao-Qi, MA Wen-Hong, NIU Ke-Chang, CHEN Di-Ma, LIU Na-Na, SU Xiang-Yan, JING He-Ying, FENG Xiao-Juan, ZENG Hui, WANG Zhi-Heng

表3 内蒙古典型草原植物叶片碳氮比(C:N)与氮(N)含量、碳磷比(C:P)与磷(P)含量及氮(N)含量与磷(P)含量的标准主轴(SMA)回归参数在不同季节间的差异

Table 3 Parameters for leaf C:N and nitrogen (N) concentration, C:P and phosphorus (P) concentration, N and P concentrations in different developmental stage of typical steppe in Nei Mongol analyzed by Standard Main Axis (SMA) regression

组别 Group C:N-N C:P-P P-N 斜率 Slope R2 p 斜率 Slope R2 p 斜率 Slope R2 p 06-02 -1.04 (-1.16, -0.93) 0.96 <0.001 -1.04 (-1.11, -0.97) 0.99 <0.001 1.68 (1.26, 2.23) 0.70 <0.001 06-17 -1.00 (-1.10, -0.90) 0.96 <0.001 -1.03 (-1.12, -0.95) 0.97 <0.001 1.16 (0.87, 1.53) 0.71 <0.001 07-02 -0.95 (-1.03, -0.88) 0.98 <0.001 -0.98 (-1.06, -0.90) 0.97 <0.001 0.98 (0.72, 1.32) 0.67 <0.001 07-17 -0.97 (-1.07, -0.87) 0.96 <0.001 -1.05 (-1.15, -0.96) 0.97 <0.001 0.97 (0.68, 1.38) 0.54 <0.001 08-02 -0.97 (-1.05, -0.89) 0.98 <0.001 -1.02 (-1.12, -0.93) 0.97 <0.001 0.90 (0.65, 1.24) 0.62 <0.001 08-17 -1.03 (-1.17, -0.90) 0.94 <0.001 -1.10 (-1.23, -0.98) 0.95 <0.001 1.08 (0.76, 1.54) 0.54 <0.001 09-02 -1.03 (-1.13, -0.93) 0.97 <0.001 -1.08 (-1.16, -1.01) 0.98 <0.001 1.13 (0.80, 1.60) 0.55 <0.001 共同斜率 Common slope 斜率异质性 Heterogeneity of slopes 共同斜率 Common slope 斜率异质性 Heterogeneity of slopes 共同斜率 Common slope 斜率异质性 Heterogeneity of slopes 全部 All -0.99 (-1.03, -0.95) p = 0.77 -1.04 (-1.07, -1.01) p = 0.58 1.11 (0.97, 1.26) p = 0.10