中国植物细根碳、氮、磷化学计量学的空间变化及其影响因子

马玉珠, 钟全林, 靳冰洁, 卢宏典, 郭炳桥, 郑媛, 李曼, 程栋梁

Spatial changes and influencing factors of fine root carbon, nitrogen and phosphorus stoichiometry of plants in China

MA Yu-Zhu,ZHONG Quan-Lin,JIN Bing-Jie,LU Hong-Dian,GUO Bing-Qiao,ZHENG Yuan,LI Man,CHENG Dong-Liang

表1 细根和粗根碳(C)、氮(N)、磷(P)含量及元素比例概况

Table 1 Summary of carbon (C), nitrogen (N) and phosphorus (P) contents and their ratios in fine roots and coarse roots

因变量 Dependent variable n 最小值 Min (%) 最大值 Max (%) 平均值 Mean (%) 标准差 Standard deviation 细根 Fine root C 33 37.09 58.91 47.39 5.07 N 146 0.24 2.97 0.92 0.43 P 123 0.01 0.47 0.10 0.08 N:P 123 1.63 63.87 14.27 9.88 C:N 33 23.09 116.02 59.15 27.11 C:P 17 166.08 1 118.00 522.10 289.86 粗根 Coarse root C 59 34.80 54.49 45.65 4.42 N 182 0.07 2.18 0.59 0.33 P 149 0.01 0.54 0.06 0.05 N:P 149 1.58 35.07 11.67 6.86 C:N 55 24.27 560.00 121.98 95.50 C:P 41 318.15 2 407.22 957.27 551.18