北热带喀斯特季节性雨林土壤和6个常见树种 凋落物的C、N、P化学计量学特征

郭屹立, 李冬兴, 王斌, 白坤栋, 向悟生, 李先琨

C, N and P stoichiometric characteristics of soil and litter fall for six common tree species in a northern tropical karst seasonal rainforest in Nonggang, Guangxi, southern China

Yili Guo,Dongxing Li,Bin Wang,Kundong Bai,Wusheng Xiang,Xiankun Li

表2 弄岗15 ha森林动态监测样地不同生境类型土壤的C、N、P含量及化学计量比(平均值±标准误)

Table 2 Soil C, N, P contents and stoichiometry (mean ± SE) in different habitat categories of the 15 ha forest dynamics plot in Nonggang, Guangxi

生境类型 Habitat category C (g/kg) N (g/kg) P (g/kg) C : N C : P N : P 峰顶 Hilltop 141.82 ± 7.97a 9.25 ± 0.58a 0.70 ± 0.04a 15.44 ± 0.42a 207.67 ± 13.90a 13.59 ± 1.05a 高坡位 Upper slope 121.01 ± 8.38b 7.77 ± 0.45ab 0.79 ± 0.08a 15.93 ± 1.33a 159.75 ± 13.30b 10.70 ± 1.16ab 中坡位 Middle slope 103.56 ± 6.69c 6.63 ± 0.36b 1.18 ± 0.102ab 15.65 ± 0.56a 93.332 ± 9.10c 6.00 ± 0.58b 低坡位 Lower slope 103.66 ± 4.67c 6.32 ± 0.37b 1.67 ± 0.11b 16.59 ± 0.56a 63.57 ± 3.818d 3.87 ± 0.26c 洼地 Depression 90.38 ± 6.68d 5.26 ± 0.38c 2.40 ± 0.19c 17.54 ± 1.25ab 40.77 ± 4.96e 2.32 ± 0.25cd