神农架常绿落叶阔叶混交林碳氮磷化学计量比

刘璐,葛结林,舒化伟,赵常明,徐文婷,申国珍,谢宗强

C, N and P stoichiometric ratios in mixed evergreen and deciduous broadleaved forests in Shennongjia, China

LIU Lu,GE Jie-Lin,SHU Hua-Wei,ZHAO Chang-Ming,XU Wen-Ting,SHEN Guo-Zhen,XIE Zong-Qiang

表2 不同器官生物量加权C、N、P含量、化学计量比及其变异系数

Table 2 C, N and P concentrations, their stoichiometric ratios, and coefficients of variation in different organs

器官 Organ C (g·kg-1) N (g·kg-1) P (g·kg-1) C:N C:P N:P 干 Trunk 473.28 (0.03) 3.19 (0.24) 0.30 (0.63) 148.39 (0.23) 1 591.32 (2.11) 10.72 (1.53) 叶 Leaf 474.94 (0.04) 17.29 (0.23) 0.97 (0.26) 27.47 (0.27) 487.33 (0.53) 17.74 (0.61) 枝 Branch 468.74 (0.03) 6.91 (0.25) 0.63 (0.33) 67.83 (0.28) 744.63 (0.38) 10.98 (0.23) 树皮 Bark 462.39 (0.05) 5.69 (0.25) 0.29 (0.40) 81.30 (0.25) 1 592.32 (0.46) 19.59 (0.37) 粗根 Thick root 465.06 (0.03) 3.52 (0.30) 0.28 (0.57) 132.16 (0.29) 1 652.41 (0.44) 12.50 (0.32) 细根 Fine root 467.06(0.04) 5.87 (0.33) 0.38 (0.43) 79.51 (0.33) 1 235.11 (0.38) 15.53 (0.38)