云南普洱季风常绿阔叶林优势物种不同生长阶段叶片碳、氮、磷化学计量特征

刘万德, 苏建荣, 李帅锋, 郎学东, 张志钧, 黄小波

Leaf carbon, nitrogen and phosphorus stoichiometry at different growth stages in dominant tree species of a monsoon broad-leaved evergreen forest in Pu’er, Yunnan Province, China

LIU Wan-De,SU Jian-Rong,LI Shuai-Feng,LANG Xue-Dong,ZHANG Zhi-Jun,HUANG Xiao-Bo

表2 6种植物叶片N、P、C含量及化学计量比的变化

Table 2 Variations of leaf N, P and C contents and mass ratios of C:N, N:P, C:P in six plant species

参数 Para- meter 物种 Species 平均值 Mean 变异系数 Coefficient of variation (%) 极差 Range N 茶梨 Anneslea fragrans 8.78 15.72 5.40 红锥 Castanopsis hystrix 12.73 11.23 4.54 短刺锥 C. echidnocarpa 14.20 13.66 8.65 西南木荷 Schima wallichii 12.75 27.61 14.17 泥柯 Lithocarpus fenestratus 17.01 7.47 5.72 截果柯 L. truncatus 14.55 15.60 7.19 合计 Total 13.24 24.24 17.85 P 茶梨 Anneslea fragrans 0.46 17.39 0.35 红锥 Castanopsis hystrix 0.40 17.50 0.22 短刺锥 C. echidnocarpa 0.71 66.20 1.41 西南木荷 Schima wallichii 0.41 19.51 0.28 泥柯 Lithocarpus fenestratus 1.02 63.73 1.71 截果柯 L. truncatus 0.53 18.87 0.33 合计 Total 0.59 40.68 1.71 C 茶梨 Anneslea fragrans 508.62 3.00 53.34 红锥 Castanopsis hystrix 464.75 1.61 20.73 短刺锥 C. echidnocarpa 480.35 1.97 41.36 西南木荷 Schima wallichii 471.38 5.89 107.37 泥柯 Lithocarpus fenestratus 502.91 3.75 57.73 截果柯 L. truncatus 495.10 2.49 47.95 合计 Total 487.18 3.12 107.37 C:N 茶梨 Anneslea fragrans 59.49 18.34 43.33 红锥 Castanopsis hystrix 37.05 13.77 16.21 短刺锥 C. echidnocarpa 34.36 12.17 17.70 西南木荷 Schima wallichii 38.84 20.29 32.10 泥柯 Lithocarpus fenestratus 29.68 6.84 8.99 截果柯 L. truncatus 34.83 16.48 19.27 合计 Total 39.30 15.19 66.81 N:P 茶梨 Anneslea fragrans 19.80 24.80 20.96 红锥 Castanopsis hystrix 32.71 19.20 19.23 短刺锥 C. echidnocarpa 25.56 38.93 33.09 西南木荷 Schima wallichii 31.58 23.21 24.57 泥柯 Lithocarpus fenestratus 31.60 91.65 71.06 截果柯 L. truncatus 28.46 20.98 21.45 合计 Total 28.28 37.38 71.77 C:P 茶梨 Anneslea fragrans 1 153.75 22.23 1100.84 红锥 Castanopsis hystrix 1 195.89 15.99 622.73 短刺锥 C. echidnocarpa 855.62 35.06 942.17 西南木荷 Schima wallichii 1 195.06 22.49 911.85 泥柯 Lithocarpus fenestratus 934.20 91.60 2075.46 截果柯 L. truncatus 977.11 21.45 729.09 合计 Total 1 051.94 32.98 2075.46