Stoichiometric characteristics of carbon, nitrogen and phosphorus in Phyllostachys edulis forests of China

doi:10.17521/cjpe.2015.0464

Abstract

Abstract:

：Aims Stoichiometric ratios of carbon (C), nitrogen (N) and phosphorus (P) are important characteristics of the ecological processes and functions. Studies on population ecological stoichiometry can refine the content of flora chemometrics, determine the limited nutrient, and provide data for process-based modeling over large scale. Phyllostachys edulis is an important forest type, whose area accounts for 74% of total bamboo forest area in Southern China. However, little is known about the ecological stoichiometric in P. edulis. This study aimed to reveal C:N, C:P and N:P stoichiometry characteristics of the “plant-soil-litter” continuum and to provide a better understanding nutrient cycling and stability mechanisms in P. edulis forest in China. Methods The data were collected from the published literature containing C、N、P content in leaf or surface soil (0-20 cm) or littefall in P. edulis forests. Important findings 1) The leaf C, N, P content were estimated at 478.30 mg·g^-1, 22.20 mg·g^-1, 1.90 mg·g^-1 in P. edulis, and the corresponding C: N, C: P and N: P were 26.80, 299.60 and 14.40, respectively. Soil C, N, and P content in 0-20 cm were 21.53 mg·g^-1, 1.66 mg·g^-1, 0.41 mg·g^-1, with ratios of 14.20 for C:N, 66.74 for C:P and 4.28 for N:P. The C, N and P contents were 438.49 mg·g^-1, 13.39 mg·g^-1, 0.86 mg·g^-1 for litterfall, with the litter C:N, C:P and N:P being 25.53, 665.67, 22.55, respectively. 2) In the plant-soil-litter system in P. edulis forest, leaf had higher C:N, litter had higher C:P and N:P, while soil were the lowest. The N, P resorption rate was 39.68% and 54.74%, indicating that P. edulis forest growth and development was constrained by P or by both of N and P in China. 3) N content and N:P in leaf showed a tendency to increase with latitude, while the C:N of leaf declined with latitude. N:P of leaf increased with longitude, but the P content and the C:N of leaf showed a opposite trend. C: N of soil increased with longitude, whereas the N content of soil declined longitude. The N content of litter declined with longitude. 4) The leaf N content was negatively correlated with mean annual temperature and mean annual precipitation, but being more sensitive to temperature than precipitation. The positive correlations between N content and latitude support “Temperature-Plant Physiological” hypothesis, reflecting an adaptive strategy to environmental conditions.

http://jtp.cnki.net/bilingual/detail/html/ZWSB201608003

Key words: leaf, soil, litterfall, latitude, longitude, ecological stoichiometry

Man-Yi DU, Shao-Hui FAN, Guang-Lu LIU, Huan-Ying FENG, Bao-Hua GUO, Xiao-Lu TANG. Stoichiometric characteristics of carbon, nitrogen and phosphorus in Phyllostachys edulis forests of China[J]. Chin J Plant Ecol, 2016, 40(8): 760-774.

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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2015.0464

https://www.plant-ecology.com/EN/Y2016/V40/I8/760

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	因变量 Dependent variable	n	最小值 Min (mg·g^-1)	最大值 Max (mg·g^-1)	平均值 Mean (mg·g^-1)	标准偏差 Standard deviation	变异系数 Coefficient of variation (%)	p (K-S检验) p (K-S test)
叶片 Leaf	C	32	417.10	544.20	478.30	33.69	7.04	0.980
	N	68	6.00	32.50	22.20	5.57	25.03	0.107
	P	66	0.60	6.50	1.90	1.24	65.19	0.137
	N:P	74	3.22	32.17	14.40	6.16	42.66	0.505
	C:N	14	17.55	60.09	26.80	12.12	45.23	0.233
	C:P	12	192.00	565.94	299.60	139.77	46.65	0.080
土壤 Soil	C	95	8.11	45.05	21.53	8.47	39.34	0.832
	N	85	0.49	3.99	1.66	0.72	43.14	0.953
	P	41	0.07	0.79	0.41	0.16	38.04	0.087
	N:P	41	1.29	7.83	4.28	1.78	41.44	0.670
	C:N	81	5.35	32.12	14.20	4.51	31.80	0.784
	C:P	41	23.61	224.86	66.74	39.32	58.92	0.600
凋落物 Litter	C	12	394.50	517.90	438.49	31.67	7.22	0.511
	N	21	5.40	30.20	13.39	6.76	50.50	0.892
	P	20	0.30	2.20	0.86	0.58	67.74	0.742
	N:P	20	3.00	54.25	22.55	15.18	67.32	0.989
	C:N	9	14.52	44.74	25.53	9.63	37.72	0.923
	C:P	8	219.25	1 096.25	665.67	324.97	48.82	0.639

	因变量 Dependent variable	n	最小值 Min (mg·g^-1)	最大值 Max (mg·g^-1)	平均值 Mean (mg·g^-1)	标准偏差 Standard deviation	变异系数 Coefficient of variation (%)	p (K-S检验) p (K-S test)
叶片 Leaf	C	32	417.10	544.20	478.30	33.69	7.04	0.980
	N	68	6.00	32.50	22.20	5.57	25.03	0.107
	P	66	0.60	6.50	1.90	1.24	65.19	0.137
	N:P	74	3.22	32.17	14.40	6.16	42.66	0.505
	C:N	14	17.55	60.09	26.80	12.12	45.23	0.233
	C:P	12	192.00	565.94	299.60	139.77	46.65	0.080
土壤 Soil	C	95	8.11	45.05	21.53	8.47	39.34	0.832
	N	85	0.49	3.99	1.66	0.72	43.14	0.953
	P	41	0.07	0.79	0.41	0.16	38.04	0.087
	N:P	41	1.29	7.83	4.28	1.78	41.44	0.670
	C:N	81	5.35	32.12	14.20	4.51	31.80	0.784
	C:P	41	23.61	224.86	66.74	39.32	58.92	0.600
凋落物 Litter	C	12	394.50	517.90	438.49	31.67	7.22	0.511
	N	21	5.40	30.20	13.39	6.76	50.50	0.892
	P	20	0.30	2.20	0.86	0.58	67.74	0.742
	N:P	20	3.00	54.25	22.55	15.18	67.32	0.989
	C:N	9	14.52	44.74	25.53	9.63	37.72	0.923
	C:P	8	219.25	1 096.25	665.67	324.97	48.82	0.639

	因变量 Dependent variable	截距 Intercept	斜率 Slope	R²	p	n
叶片	C	2.619	0.002	0.019	0.449	32
Leaf	N	-0.037	0.047	0.368	<0.001	68
	P	0.657	-0.015	0.012	0.390	66
	N:P	-0.313	0.048	0.120	0.002	74
	C:N	3.069	-0.057	0.602	<0.001	14
	C:P	-5 806.047	201.231	0.204	0.141	12
土壤	C	1.252	0.002	0.000	0.835	95
Soil	N	-0.131	0.011	0.015	0.270	85
	P	-0.456	0.001	0.000	0.937	41
	N:P	0.005	0.021	0.070	0.098	41
	C:N	1.239	-0.004	0.003	0.621	81
	C:P	1.385	0.014	0.026	0.316	41
凋落物	C	2.697	-0.002	0.007	0.798	12
Litter	N	63.793	-1.668	0.178	0.057	21
	P	-0.084	-0.002	0.000	0.955	20
	N:P	3.152	-0.064	0.074	0.247	20
	C:N	2.304	-0.032	0.074	0.479	9
	C:P	4 613.437	-135.896	0.299	0.161	8

	因变量 Dependent variable	截距 Intercept	斜率 Slope	R²	p	n
叶片	C	2.619	0.002	0.019	0.449	32
Leaf	N	-0.037	0.047	0.368	<0.001	68
	P	0.657	-0.015	0.012	0.390	66
	N:P	-0.313	0.048	0.120	0.002	74
	C:N	3.069	-0.057	0.602	<0.001	14
	C:P	-5 806.047	201.231	0.204	0.141	12
土壤	C	1.252	0.002	0.000	0.835	95
Soil	N	-0.131	0.011	0.015	0.270	85
	P	-0.456	0.001	0.000	0.937	41
	N:P	0.005	0.021	0.070	0.098	41
	C:N	1.239	-0.004	0.003	0.621	81
	C:P	1.385	0.014	0.026	0.316	41
凋落物	C	2.697	-0.002	0.007	0.798	12
Litter	N	63.793	-1.668	0.178	0.057	21
	P	-0.084	-0.002	0.000	0.955	20
	N:P	3.152	-0.064	0.074	0.247	20
	C:N	2.304	-0.032	0.074	0.479	9
	C:P	4 613.437	-135.896	0.299	0.161	8

	因变量 Dependent variable	截距 Intercept	斜率 Slope	R²	p	n
叶片	C	2.842	-0.001	0.047	0.232	32
Leaf	N	1.171	0.001	0.001	0.790	68
	P	4.070	-0.033	0.253	<0.001	66
	N:P	-2.650	0.032	0.246	<0.001	74
	C:N	14.897	-0.113	0.513	0.004	14
	C:P	11.947	-0.080	0.184	0.164	12
土壤	C	2.669	-0.012	0.032	0.084	95
Soil	N	2.115	-0.016	0.053	0.035	85
	P	1.025	-0.012	0.029	0.290	41
	N:P	2.131	-0.013	0.036	0.235	41
	C:N	-0.275	0.012	0.051	0.044	81
	C:P	0.469	0.011	0.022	0.353	41
凋落物	C	2.563	0.001	0.016	0.698	12
Litter	N	2.883	-0.060	0.209	0.037	21
	P	-0.561	0.003	0.002	0.858	20
	N:P	-0.124	0.011	0.010	0.669	20
	C:N	3.037	-0.014	0.196	0.232	9
	C:P	6.433	-0.031	0.415	0.085	8