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4 弄岗15 ha森林动态监测样地不同季节6个常见种的凋落物C、N、P含量及化学计量比(平均值±标准误)

Table 4 Litter fall C, N, P contents and stoichiometry (mean ± SE) of six common tree species in different seasons of the 15 ha forest dynamics plot in Nonggang, Guangxi

物种 Species	季节 Season	C (g/kg)	N (g/kg)	P (g/kg)	C : N	C : P	N : P
海南椴 Diplodiscus trichosperma	春季 Spring	631.96 ± 38.12^a	17.63 ± 0.12^ab	0.65 ± 0.06^a	35.83 ± 2.09^ab	984.01 ± 56.99^a	27.63 ± 2.11^a
	夏季 Summer	606.89 ± 8.12^ab	19.40 ± 1.33^a	0.73 ± 0.09^a	31.65 ± 2.66^b	853.47 ± 34.03^ab	27.48 ± 4.53^a
	秋季 Autumn	546.15 ± 5.891^b	13.75 ± 0.87^c	0.58 ± 0.05^ab	40.00 ± 2.27^a	949.01 ± 76.93^a	23.70 ± 1.20^a
	冬季 Winter	559.95 ± 11.48^b	14.71 ± 0.87^c	0.57 ± 0.03^ab	38.24 ± 1.64^a	980.29 ± 44.97^a	25.66 ± 0.87^a
闭花木 Cleistanthus sumatranus	春季 Spring	644.94 ± 35.61^a	13.01 ± 0.87^b	0.43 ± 0.02^ab	50.12 ± 4.18^ab	1,501.64 ± 150.05^b	30.17 ± 2.54^b
	夏季 Summer	636.59 ± 5.45^a	19.48 ± 2.67^a	0.50 ± 0.02^a	33.93 ± 4.57^b	1,284.62 ± 38.53^b	39.70 ± 7.00^a
	秋季 Autumn	599.37 ± 2.92^a	11.20 ± 0.35^b	0.39 ± 0.02^b	53.64 ± 1.98^ab	1,519.62 ± 84.76^b	28.32 ± 0.96^b
	冬季 Winter	617.74 ± 3.67^a	9.50 ± 0.32^b	0.31 ± 0.02^c	65.13 ± 1.99^a	2,026.05 ± 101.94^a	31.10 ± 1.13^b
广西牡荆 Vitex kwangsiensia	春季 Spring	621.14 ± 37.60^a	20.91 ± 0.63^a	0.96 ± 0.03^b	29.88 ± 2.78^a	646.18 ± 25.58^a	21.84 ± 1.20^a
	夏季 Summer	604.61 ± 23.11^a	24.87 ± 0.13^a	1.28 ± 0.05^a	24.31 ± 0.99^ab	474.81 ± 34.03^b	19.48 ± 0.64^a
	秋季 Autumn	568.00 ± 3.49^a	18.62 ± 0.15^b	1.05 ± 0.02^b	30.51 ± 0.34^a	541.27 ± 9.08^ab	17.75 ± 0.49^a
	冬季 Winter	534.22 ± 39.44^ab	17.29 ± 0.47^b	1.04 ± 0.10^b	30.84 ± 1.72^a	517.75 ± 45.97^ab	16.80 ± 1.15^a
苹婆 Sterculia monosperma	春季 Spring	612.08 ± 26.03^a	14.98 ± 0.73^b	0.97 ± 0.06^b	41.13 ± 3.21^a	635.44 ± 60.17^a	15.41 ± 0.25^a
	夏季 Summer	556.00 ± 15.59^a	19.44 ± 0.60^a	1.49 ± 0.05^a	28.63 ± 0.75^b	373.98 ± 16.39^c	13.05 ± 0.31^a
	秋季 Autumn	562.55 ± 3.54^a	15.23 ± 0.48^b	1.22 ± 0.12^ab	37.01 ± 1.35^a	470.92 ± 44.59^b	12.84 ± 1.68^a
	冬季 Winter	583.38 ± 13.02^a	15.61 ± 0.19^b	1.24 ± 0.23^ab	37.38 ± 0.60^a	525.13 ± 103.88^b	14.06 ± 2.84^a
中国无忧花 Saraca dives	春季 Spring	589.41 ± 9.94^a	14.64 ± 0.69^a	1.39 ± 0.28^a	40.47 ± 2.52^b	405.08 ± 67.98^a	10.15 ± 2.07^a
	夏季 Summer	589.05 ± 7.66^a	15.95 ± 0.47^a	1.55 ± 0.20^a	37.04 ± 1.54^b	440.75 ± 58.67^a	12.07 ± 2.12^a
	秋季 Autumn	566.74 ± 2.26^a	14.16 ± 0.58^a	1.19 ± 0.10^ab	40.14 ± 1.54^b	484.56 ± 41.07^a	12.09 ± 1.06^a
	冬季 Winter	568.74 ± 17.89^a	11.01 ± 1.22^b	1.21 ± 0.04^ab	52.90 ± 5.95^a	470.40 ± 11.80^a	9.15 ± 1.15^a
广西棋子豆 Archidendron guangxiensis	春季 Spring	704.78 ± 13.80^a	21.20 ± 0.48^a	0.42 ± 0.06^b	33.31 ± 1.38^a	1,723.53 ± 216.60^a	51.83 ± 6.35^a
	夏季 Summer	614.27 ± 47.98^b	24.84 ± 0.59^a	0.57 ± 0.02^a	24.79 ± 2.17^ab	1,074.73 ± 58.67^b	43.66 ± 1.75^ab
	秋季 Autumn	637.85 ± 4.48^ab	19.08 ± 0.54^a	0.44 ± 0.03^b	33.48 ± 1.09^a	1,476.42 ± 108.41^ab	43.97 ± 1.86^ab
	冬季 Winter	639.11 ± 6.37^ab	19.84 ± 1.08^a	0.49 ± 0.01^ab	32.42 ± 2.01^a	1,314.19 ± 19.96^ab	40.92 ± 3.12^ab