九龙江河口水体粪类有机质污染时空变化特征研究

庄文智; 陶舒琴; 王爱军; 叶翔; 冉畅; 刘子同; 李玉红; 罗阳; 刘建

doi:10.12284/hyxb2023117

九龙江河口水体粪类有机质污染时空变化特征研究

doi: 10.12284/hyxb2023117

庄文智^{1, 2,},
陶舒琴^{2, 3, ,},
王爱军^{2, 3},
叶翔^{2, 3},
冉畅²,
刘子同²,
李玉红²,
罗阳²,
刘建²

1.
福州大学先进制造学院，福建泉州 362251
2.
自然资源部第三海洋研究所，福建厦门 361005
3.
福建省海洋物理与地质过程重点实验室，福建厦门 361005

基金项目: 自然资源部第三海洋研究所科研业务费专项资金（海三科2017013，海三科2019018）；厦门市青年创新基金（3502Z20206097）；福建省自然科学基金（2020J05076）。

详细信息

作者简介:
庄文智（1995-），男，福建省漳州市人，主要研究方向为河口海岸学。E-mail: 819237320@qq.com

通讯作者:
陶舒琴，女，副研究员，主要研究方向为河口、海岸及陆架海域陆海相互作用及生态环境效应研究。E-mail: taoshuqin@tio.org.cn

中图分类号: P343.5；X55
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出版历程
- 收稿日期: 2022-07-31
- 修回日期: 2023-02-15
- 网络出版日期: 2023-08-04
- 刊出日期: 2023-07-01

Decipher temporal and spatial variation characteristics of fecal organic matter pollution by the coprostanol in the Jiulong River Estuary

Zhuang Wenzhi^{1, 2
,},
Tao Shuqin^{2, 3
, ,},
Wang Aijun^{2, 3},
Ye Xiang^{2, 3},
Ran Chang²,
Liu Zitong²,
Li Yuhong²,
Luo Yang²,
Liu Jian²

1.
School of Advanced Manufacturing, Fuzhou University, Quanzhou 362251, China
2.
Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
3.
Fujian Provincial Key Laboratory of Marine Physical and Geological Processes, Xiamen 361005, China

摘要

摘要: 河口是陆源污染物入海的主要通道，在全球气候快速变化和人类活动加剧的背景下，河流入海污染物通量急剧增加，导致河口、海湾及其周边海域水体污染、生态受损等严峻的环境问题发生。本文选取了受极端事件和人类活动影响显著的我国东南强潮型的九龙江河口，利用粪甾醇有机标志物手段开展河口环境粪类污染示踪研究，探讨九龙江河口区粪类污染物（“源”）进入河流后的入海行为（“到”），揭示粪类有机质在近河口海域时空分布特征及受控因素（“汇”）。研究发现，不同季节的河口径流过程和潮汐作用影响粪类有机污染物的时空分布，潮汐过程对中上游河口区水体环境中粪甾醇的赋存影响较大，呈现高潮低浓度而低潮高浓度的潮周期变化特征；河口区粪甾醇在陆−海输运过程的赋存特征还受控于最大浑浊带复杂的水体和沉积动力过程，对粪类有机污染物有一定的净化作用；研究还通过对比人为源贡献主导的氨氮等河流输入的营养盐说明粪甾醇在河口区的时空分布特征与人类活动密切相关。
- 粪甾醇 /
- 九龙江河口 /
- 最大浑浊带 /
- 粪类有机污染
Abstract: Estuaries are the main channels for land-derived pollutants to enter the sea. Under the background of rapid global climate change and intensified human activities, the flux of river pollutants into the sea has increased sharply, resulting in serious ecological problems such as water pollution and ecological damage in estuaries, bays and their adjacent marginal seas. This paper selects the Jiulong River Estuary, which is significantly affected by strong tides, extreme events and human activities, and applied a biomarker tool−coprostanol to trace the environmental fecal pollution, explore the enter the sea behavior (“to”) of fecal pollutants (“source”) in the Jiulong River Estuary after entering the river, and reveal the spatial and temporal distribution characteristics and controlled factors (“sink”) of fecal organic matter within the estuary. The study found that the estuarine runoff process and tidal action in different seasons affect the spatial and temporal distribution of fecal organic pollutants, and the tidal process has a greater impact on the occurrence of coprostanol in the water environment of the middle and upper reaches of the estuary, showing a tidal cycle of low concentration at high tide and high concentration at low tide. The occurrence characteristics of coprostanol in the land-sea transport process in the estuarine area are also controlled by the complex water body and sediment dynamic process in the maximum turbidity zone, which has a certain purification effect on fecal organic pollutants. The study also shows that the spatiotemporal distribution characteristics of coprostanol in estuarine areas are closely related to human activities by comparing the nutrient inputs from rivers such as ammonia and nitrogen dominated by anthropogenic contributions.
- coprostanol /
- Jiulong River Estuary /
- turbidity maximum /
- fecal organic pollution

HTML全文

图 1 2018−2019年九龙江河口断面洪季（8月，a）和枯季（2月，b）典型月份采样站位示意图

Fig. 1 Schematic diagram of sampling stations in typical months of flood (August, a) and dry (February, b) seasons of the Jiulong River Estuary section from 2018 to 2019

下载: 全尺寸图片幻灯片

图 2 2018−2019年九龙江河口断面洪季（8月）和枯季（2月）典型月份表层水环境参数、营养盐和粪甾醇浓度特征分布

红色阴影部分代表枯季最大浑浊带影响区，灰色阴影部分代表洪季最大浑浊带影响区

Fig. 2 Spatial distributions of surface water environment parameters and nutrients and coprostanol concentration of Jiulong River Estuary section in typical months of flood (August) and dry (February) seasons from 2018 to 2019

The red and gray shaded areas represent the areas affected by the maximum turbidity zone during the dry and flood seasons, respectively

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图 3 九龙江河口定点（JJ02、JJ10和JJ14站位）观测数据分布（据文献[15]）

Fig. 3 Distribution of observational data at JJ02, JJ10 and JJ14 stations in the Jiulong River Estuary (based on reference [15]）

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图 4 2018−2019年九龙江河口断面洪季（8月）和枯季（2月）典型月份表层海水悬浮颗粒物中粪甾醇丰度和粪甾醇占总甾醇比例分布

红色阴影部分代表枯季最大浑浊带影响区；灰色阴影部分代表洪季最大浑浊带影响区

Fig. 4 Distribution map of TOC normalized coprostanol abundance and proportion of coprostanol to total sterols in suspended particulate matter of surface seawater in typical months in flood season (August) and dry season (February) of Jiulong River Estuary section from 2018 to 2019

The red and gray shaded areas represent the areas affected by the maximum turbidity zone during the dry and flood seasons, respectively

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图 5 粪甾醇浓度与盐度、浊度和氨氮浓度关系

Fig. 5 Relationship between coprostanol concentration and salinity, turbidity and ammonia nitrogen concentration

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表 1 九龙江河口水环境参数和营养盐变化范围

Tab. 1 Variation range of water environmental parameters and nutrients in the Jiulong River Estuary

参数	洪季断面表层	枯季断面表层	JJ02站位定点		JJ10站位定点		JJ14站位定点
参数	洪季断面表层	枯季断面表层	表层	底层	表层	底层	表层	底层
温度/℃	26.2～28.4	16.6～18.7
盐度	0.06～27.78	2.41～27.31	0.37～5.05	0.87～7.41	5.12～21.83	5.09～22.48	22.64～28.85	25.78～29.46
荧光叶绿素浓度/（μg·L⁻¹）	1.2～4.5	1.8～3.7
浊度/FNU	5.4～194.9	8.4～221.4	35.5～340.7	84.9～433.4	19.4～148.9	59.6～209.5	12.6～66.7	34.1～227.1
溶氧饱和度/%	69.3～92.3	71.1～100.6
磷酸盐浓度/（μmol·L⁻¹）	0.7～5.3	0.7～3.6
硝酸盐浓度/（μmol·L⁻¹）	38.4～119.4	7.7～142.9
氨氮浓度/（μmol·L⁻¹）	0～48.9	0～31.9

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表 3 九龙江河口粪甾醇浓度与其他地区的比较

Tab. 3 Comparison of coprostanol concentration in the Jiulong River Estuary with other areas

地区	类型	粪甾醇浓度/（μg·g⁻¹）	文献
渤海湾	表层沉积物	0.03～2.99	马海青等^[6]
胶州湾	表层沉积物	0.07～1.64	马海青等^[6]
密西西比河	表层沉积物	0.01～7.53	Writer等^[5]
科威特潮间带	表层沉积物	0.55～45.06	Al-Omarm^[8]
毕尔巴鄂河口	表层沉积物	10.77～135.15	Saiz-Salinas和González-Oreja^[32]
九龙江河口(洪季)	表层悬浮体颗粒物	1.76～5.28	本研究
九龙江河口(枯季)	表层悬浮体颗粒物	0.27～2.22	本研究

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表 2 2018−2019年九龙江河口断面洪季（8月）和枯季（2月）典型月份主要参数相关系数

Tab. 2 The pearson correlations of relevant parameters in surface water at Jiulong River Estuary section in typical months in flood season (August) and dry season (February) from 2018 to 2019

参数	粪甾醇/ （μg·L⁻¹）	温度/ ℃	盐度	荧光叶绿素浓度/ （μg·L⁻¹）	浊度/ FNU	溶氧饱和度/ %	磷酸盐/ （μmol·L⁻¹）	硝酸盐/ （μmol·L⁻¹）	氨氮/ （μmol·L⁻¹）
粪甾醇/（μg·L⁻¹）	1	0.325	−0.801^**	0.451	0.733^**	−0.206	0.331	0.557^*	0.738^**
温度/℃	0.325	1	−0.175	0.086	0.082	−0.400	−0.104	0.224	0.274
盐度	−0.801^**	−0.175	1	−0.710^**	−0.771^**	0.508^*	−0.611^**	−0.854^**	−0.645^**
荧光叶绿素浓度/（μg·L⁻¹）	0.451	0.086	−0.710^**	1	0.593^**	−0.711^**	0.258	0.548^*	0.593^*
浊度/FNU	0.733^**	0.082	−0.771^**	0.593^**	1	−0.165	0.518^*	0.553^*	0.562^*
溶氧饱和度/%	−0.206	−0.400	0.508^*	−0.711^**	−0.165	1	−0.247	−0.614^**	−0.369
磷酸盐/（μmol·L⁻¹）	0.331	−0.104	−0.611^**	0.258	0.518^*	−0.247	1	0.625^**	0.027
硝酸盐/（μmol·L⁻¹）	0.557^*	0.224	−0.854^**	0.548^*	0.553^*	−0.614^**	0.625^**	1	0.486^*
氨氮/（μmol·L⁻¹）	0.738^**	0.274	−0.645^**	0.593^*	0.562^*	−0.369	0.027	0.486^*	1
注：*p< 0.01，相关性极显著；p< 0.05级别，相关性显著。

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