神农架常绿落叶阔叶混交林碳氮磷化学计量比

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3 常绿和落叶树种不同器官的N、P含量(平均值±标准偏差)

Table 3 N and P concentrations in different organs in evergreen and deciduous trees (mean ± SD)

器官Organ	氮含量 N concentration (g·kg^-1)		磷含量 P concentration (g·kg^-1)
器官Organ	常绿树种 Evergreen tree	落叶树种 Deciduous tree	常绿树种 Evergreen tree	落叶树种 Deciduous tree
干 Trunk	2.67 ± 0.53^a	2.81 ± 0.70^a	0.23 ± 0.11^a	0.25 ± 0.16^a
叶 Leaf	13.66 ± 2.68^a	17.81 ± 3.69^b	0.84 ± 0.19^a	1.06 ± 0.26^b
枝 Branch	6.01 ± 1.45^a	5.39 ± 1.35^a	0.34 ± 0.08^a	0.34 ± 0.15^a
树皮 Bark	6.23 ± 1.32^a	6.82 ± 1.78^a	0.61 ± 0.23^a	0.63 ± 0.20^a
粗根 Thick root	3.34 ± 0.97^a	3.61 ± 1.09^a	0.29 ± 0.17^a	0.30 ± 0.17^a
细根 Fine root	5.18 ± 1.94^a	6.01 ± 1.84^a	0.49 ± 0.24^a	0.38 ± 0.13^b