Decomposition characteristics of vegetation litter of Suaeda salsa and Spartina alterniflora in saltmarsh of the Yellow River Estuary, China

Fang-fang WANG; Jia-guo YAN; Xu MA; Dong-dong QIU; Bao-shan CUI

doi:10.31497/zrzyxb.20200219

Journals >Journal of Natural Resources >Volume 35 >Issue 2 >Page 480 > Article

Journal of Natural Resources
Vol. 35, Issue 2, 480 (2020)

Decomposition characteristics of vegetation litter of Suaeda salsa and Spartina alterniflora in saltmarsh of the Yellow River Estuary, China

Fang-fang WANG, Jia-guo YAN, Xu MA, Dong-dong QIU, and Bao-shan CUI^*

Author Affiliations

School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China

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DOI: 10.31497/zrzyxb.20200219 Cite this Article

Fang-fang WANG, Jia-guo YAN, Xu MA, Dong-dong QIU, Bao-shan CUI. Decomposition characteristics of vegetation litter of Suaeda salsa and Spartina alterniflora in saltmarsh of the Yellow River Estuary, China[J]. Journal of Natural Resources, 2020, 35(2): 480 Copy Citation Text

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Fig. 1. Variations of litter mass remaining rates with decomposition time

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Fig. 2. Variations of C, N and C/N contents in Suaeda salsa and Spartina alterniflora during decomposition in the study area

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Fig. 3. Variations of carbon accumulation index (CAI) and nitrogen accumulation index (NAI) of Suaeda salsa and Spartina alterniflora during decomposition in the study area

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样地	土壤特征					潮汐特征
样地	盐度 /‰	pH	含水率 /%	有机碳 /(g/kg)	总氮 /(g/kg)	平均水深 /cm	平均淹水时长 /(h/d)	平均淹水频率 /(次/月)
A	2.4±0.2 a	8.5±0.04 bc	27.5±0.2 bc	1.41±0.29 a	0.191±0.011	9.3	14.5	30.0
B	4.7±0.5 b	8.4±0.03 b	27.8±1.2 c	1.79±0.25 ab	0.185±0.017	8.2	11.8	11.1
C	2.7±0.2 a	8.2±0.10 a	26.4±0.7 ab	2.12±0.49 b	0.222±0.031	6.8	8.6	6.3
D	2.4±0.1 a	8.7±0.07 c	25.8±0.4 a	2.86±0.33 c	0.268±0.015	5.0	4.4	4.0

Table 1. The environmental features of our study sites

物种	样地	方程式	k/d^-1	R²	P	t_0.95/年
盐地碱蓬	A	y=-0.00191 t-0.08284	0.00191	0.798	0.069	4.18
	B	y=-0.00186 t-0.07978	0.00186	0.789	0.074	4.30
	C	y=-0.00173 t-0.03647	0.00173	0.888	0.038	4.69
	D	y=-0.00194 t-0.04912	0.00194	0.890	0.037	4.16
互花米草	A	y=-0.00194 t+0.03549	0.00194	0.937	0.021	4.28
	B	y=-0.00234 t-0.02206	0.00234	0.977	0.008	3.48
	C	y=-0.0014 t-0.00752	0.00140	0.992	0.003	5.72
	D	y=-0.00134 t+0.02231	0.00134	0.955	0.015	6.17

Table 2. The decomposition rates of litter in different sites

相关系数	盐度	含水率	pH	淹水频率
W_t/W₀（盐地碱蓬）	-0.118	-0.238	-0.196	-0.199
W_t/W₀（互花米草）	-0.478^*	-0.410^*	0.185	-0.338
分解速率（盐地碱蓬）	-0.147	0.004	0.899^**	-0.036
分解速率（互花米草）	0.775^**	0.782^**	-0.029	0.763^**

Table 3. Correlation coefficients between litter mass remaining and decomposition rates and environmental factors

研究区	野外位置	分解部位	凋落物种类	分解位置	初始C 含量/%	初始N 含量/%	C/N	分解速率/a^-1	分解时间	参考文献
长江口九段沙	盐沼区	地上部分	互花米草	地表	70.16±3.21	0.66±0.01	106.3±2.98	1.83	257 d	Liao等^[32]
			芦苇		45.54±0.05	1.07±0.02	41.63±0.88	1.27
			海草		35.76±0.02	1.55±0.02	23.07±0.23	2.96
闽江河口鳝鱼滩湿地	靠近潮沟区	地上部分	芦苇	地表	40.05±0.54	11.98±0.48	33.64±1.09	1.40	280 d	仝川等^[14]
			短叶茳芏		40.34±0.19	10.35±0.15	39.04±0.67	1.92
			互花米草		41.90±0.18	5.92±0.34	71.80±3.66	1.51
	远离潮沟区	地上部分	芦苇	地表	40.05±0.54	11.98±0.48	33.64±1.09	1.16
			短叶茳芏		40.34±0.19	10.35±0.15	39.04±0.67	1.51
			互花米草		41.90±0.18	5.92±0.34	71.80±3.66	1.34
洞庭湖湿地	淹水频率高	叶	短尖薹草	掩埋	37.61±2.31	0.944±0.091	40.16±4.74	1.13	1 a	Xie等^[28]
	淹水频率低	叶	短尖薹草	掩埋	37.61±2.31	0.944±0.091	40.16±4.74	1.09
黄河口新生潮滩	高潮滩	地上部分	芦苇	空中	41.60±0.13	0.333±0.019	125.49±7.59	0.279	571 d	Sun等^[17]
			盐地碱蓬		40.92±0.24	0.355±0.033	115.76±11.10	0.365
			碱蓬		37.33±1.17	0.455±0.014	82.08±5.06	0.405
	中潮滩		芦苇	空中	41.60±0.13	0.333±0.019	125.49±7.59	0.453
			盐地碱蓬		40.92±0.24	0.355±0.033	115.76±11.10	0.297
			碱蓬		37.33±1.17	0.455±0.014	82.08±5.06	0.420
	低潮滩		芦苇	空中	41.60±0.13	0.333±0.019	125.49±7.59	0.854
			盐地碱蓬		40.92±0.24	0.355±0.033	115.76±11.10	0.606
			碱蓬		37.33±1.17	0.455±0.014	82.08±5.06	0.73
黄河口盐沼	A	地上部分	盐地碱蓬	地表	38.64±0.46	0.68±0.042	56.70±3.84	0.697	270 d	本研究
	B		盐地碱蓬		38.64±0.46	0.68±0.042	56.70±3.84	0.679
	C		盐地碱蓬		38.64±0.46	0.68±0.042	56.70±3.84	0.631
	D		盐地碱蓬		38.64±0.46	0.68±0.042	56.70±3.84	0.708
	A	地上部分	互花米草	地表	42.57±2.24	0.46±0.053	93.76±15.97	0.708
	B		互花米草		42.57±2.24	0.46±0.053	93.76±15.97	0.854
	C		互花米草		42.57±2.24	0.46±0.053	93.76±15.97	0.511
	D		互花米草		42.57±2.24	0.46±0.053	93.76±15.97	0.489

Table 4. Comparative analysis of litter decomposition between the Yellow River Estuary saltmarsh wetland and other typical wetlands

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