北热带喀斯特季节性雨林土壤和6个常见树种<br/>凋落物的C、N、P化学计量学特征

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3 弄岗15 ha森林动态监测样地6个常见种凋落物的C、N、P含量及化学计量比(平均值±标准误)

Table 3 Litter fall C, N, P contents and stoichiometry (mean ± SE) of six common tree species of the 15 ha forest dynamics plot in Nonggang, Guangxi

物种 Species	C (g/kg)	N(g/kg)	P (g/kg)	C : N	C : P	N : P
海南椴 Diplodiscus trichosperma	586.24 ± 47.25^b	16.37 ± 2.71^b	0.63 ± 0.11^c	36.43 ± 1.33^b	941.69 ± 34.37^b	26.12 ± 1.21^b
闭花木 Cleistanthus sumatranus	624.66 ± 32.53^a	13.30 ± 4.47^c	0.41 ± 0.08^cd	50.71 ± 3.70^a	1,582.98 ± 92.82^a	32.32 ± 2.08^b
广西牡荆 Vitex kwangsiensia	581.99 ± 56.14^b	20.42 ± 3.06^a	1.08 ± 0.15^ab	28.88 ± 1.09^c	545 ± 23.32^c	18.97 ± 0.70^c
苹婆 Sterculia monosperma	578.50 ± 33.51^b	16.31 ± 2.06^b	1.23 ± 0.27^a	36.04 ± 1.58^b	501.37 ± 39.61^c	13.84 ± 0.77^d
中国无忧花 Saraca dives	578.49 ± 19.74^b	13.94 ± 2.23^bc	1.33 ± 0.31^a	42.64 ± 2.34^ab	450.20 ± 23.11^c	10.87 ± 0.81^d
广西棋子豆 Archidendron guangxiensis	649.00 ± 51.29^a	21.24 ± 2.54^a	0.48 ± 0.08^cd	31.00 ± 1.31^c	1,397.22 ± 88.93^a	45.10 ± 2.02^a