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4 不同森林类型生态系统组分的C、N、P化学计量比

Table 4 C, N and P stoichiometric ratios in different components of varying forest ecosystems

寒温带针叶林 Cold temperate coniferous forest 温带针阔混交林 Temperate conifer broadleaf mixed forest 暖温带落叶阔叶林 Warm temperate deciduous broadleaved forest 北亚热带常绿落叶阔叶混交林 North subtropical evergreen deciduous broadleaved mixed forest 亚热带常绿阔叶林 Subtropical evergreen broadleaved forest 热带季雨林 Tropical monsoon forest 植物群落 Plant community C:N 188.4 ± 2.4 99.1 ± 8.0 85.6 ± 3.7 85.5 98.4 ± 6.5 C:P 1 637.4 ± 9.3 954.0 ± 81.4 1 392.3 ± 68.9 1 087.4 1 493.4 ± 85.2 N:P 8.7 ± 0.1 9.7 ± 0.2 16.4 ± 0.3 12.7 15.3 ± 1.5 凋落物 Litter C:N 30.3 ± 0.1 39.7 ± 0.9 38.8 ± 1.0 36.3 36.7 ± 0.5 38.0 ± 1.2 C:P 623.3 ± 126.5 463.5 ± 28.0 679.6 ± 27.7 958.9 710.4 ± 56.7 1 212.2 ± 82.4 N:P 20.6 ± 4.2 11.9 ± 0.8 18.4 ± 0.8 26.4 19.4 ± 1.7 32.1 ± 2.8 土壤 Soil C:N 14.9 ± 0.4 13.6 ± 0.8 14.4 ± 0.4 13.6 14.8 ± 0.3 11.0 ± 0.2 C:P 45.3 ± 3.4 71.5 ± 6.2 58.3 ± 3.5 80.0 81.6 ± 6.7 129.1 ±10.9 N:P 3.0 ± 0.2 4.9 ± 0.3 4.2 ± 0.2 5.9 5.5 ± 0.4 11.7 ± 0.9 生态系统 Ecosystem C:N 32.5 ± 4.7 31.8 ± 3.5 31.6 ± 2.2 25.6 38.0 ± 1.0 C:P 92.0 ± 9.1 159.5 ± 14.0 140.9 ± 12.6 168.1 248.8 ± 4.8 N:P 2.9 ± 0.2 4.8 ± 0.4 4.6 ± 0.2 6.5 6.6 ± 0.1