某河口复合生态净化系统浮游植物群落特征与水质健康状况分析

许晓毅; 孙亦栋; 姜永波; 吴玮; 吴兵党; 黄天寅; 陈小宾; 马奕; 朱奕; 宋晓恒

doi:10.12153/j.issn.1674-991X.20230090

某河口复合生态净化系统浮游植物群落特征与水质健康状况分析

doi: 10.12153/j.issn.1674-991X.20230090

许晓毅^{1, 2,},
孙亦栋¹,
姜永波¹,
吴玮^{1, 2},
吴兵党^{1, 2},
黄天寅^{1, 2},
陈小宾¹,
马奕³,
朱奕³,
宋晓恒³

1.
苏州科技大学环境科学与工程学院
2.
苏州市海绵城市技术重点实验室
3.
苏州市水利工程建设处

基金项目: 苏州市科技计划项目（SS202002）；苏州市水利水务科技项目（2022001）

详细信息

作者简介:
许晓毅(1974—)，女，教授，博士，主要从事水污染控制技术及生物修复研究，xuxiaoyiskd@usts.edu.cn

中图分类号: X82
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- 文章访问数: 138
- HTML全文浏览量: 82
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- 被引次数: 0
出版历程
- 收稿日期: 2023-02-07
- 录用日期: 2023-05-21
- 修回日期: 2023-03-21

Analysis of phytoplankton community characteristics and water quality health status in an estuarine composite ecological purification system

XU Xiaoyi^{1, 2
,},
SUN Yidong¹,
JIANG Yongbo¹,
WU Wei^{1, 2},
WU Bingdang^{1, 2},
HUANG Tianyin^{1, 2},
CHEN Xiaobin¹,
MA Yi³,
ZHU Yi³,
SONG Xiaoheng³

1.
School of Environmental Science and Engineering, Suzhou University of Science and Technology
2.
Key Laboratory of Suzhou Sponge City Technology
3.
Suzhou Water Conservancy Engineering Construction Division

摘要

摘要:
针对阳澄湖某入湖河口复合生态净化系统实际工程，在探究各净化单元水体浮游植物群落季节性构成特征的基础上，采用综合营养状态指数和浮游植物多样性指数对水质健康状况进行综合评价及分析。结果表明：复合生态净化系统中共鉴定浮游植物8门97属143种，种类组成以硅藻门、绿藻门和蓝藻门为主；系统进、出水浮游植物密度分别为5.81×10⁵ ~1.76×10⁷、4.96×10⁵ ~1.65×10⁷ 个/L，进、出水生物量分别为0.292~5.21、0.194~4.66 mg/L，净化系统对水体浮游植物生长具有较好的控制效应；按照浮游植物功能群（functional group，FG）分类方法，净化系统浮游植物可划分为26个功能群，其中B、D、MP、P、S1、W1、X2、Y、G、J、L_O和M为优势功能群；各单元优势功能群的演替与水温、COD_Mn、DO和TN等水质指标具有良好相关性。研究期间复合生态净化系统水体处于中营养到轻度富营养状态，净化系统有效地提升了入湖水体的生态健康水平。
- 入湖河口 /
- 生态修复 /
- 浮游植物 /
- 营养状态
Abstract:
In view of the actual project of the composite ecological purification system in an estuary of Yangcheng Lake, based on exploring the seasonal composition characteristics of the phytoplankton community in each purification unit, comprehensive evaluation and analysis of water quality health status were carried out by using comprehensive trophic level index (TLI) and phytoplankton diversity index. The results showed that a total of 143 species of phytoplankton from 97 genera and 8 phyla were identified in the purification system, with Diatoma, Chlorophyta, and Cyanophyta dominating the species composition. The phytoplankton intensities of the influent and effluent of the system were 5.81×10⁵-1.76×10⁷ cells/L and 4.96×10⁵-1.65×10⁷ cells/L, respectively, and the biomass ranges were 0.292-5.21 mg/L and 0.194-4.66 mg/L, respectively. The system had an effective control over phytoplankton growth in the water body. According to FG functional group classification method, the phytoplankton in the purification system could be divided into 26 functional groups, among which B, D, MP, P, S1, W1, X2, Y, G, J, L_O, and M were the dominant functional groups. The succession of dominant functional groups in each unit correlated well with water quality indices such as water temperature, COD_Mn, DO, and TN. The water body of the composite purification system was in mesotrophic to slightly eutrophic state during the research period, indicating that the system effectively improved the ecological health of the water entering the lake.
- lake-inlet estuarine /
- ecological restoration /
- phytoplankton /
- nutritional status

HTML全文

图 1 复合生态修复系统及采样点位置示意

Figure 1. Diagram of composite ecological purification system and sampling sites

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图 2 复合生态净化系统浮游植物种类组成及比例

Figure 2. Composition and proportion of phytoplankton species in the composite ecological purification system

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图 3 复合生态净化系统浮游植物物种数时空变化

Figure 3. Spatial-temporal changes of phytoplankton species in the composite ecological purification system

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图 4 复合生态净化系统内各单元浮游植物总藻密度及生物量变化

Figure 4. Changes in total phytoplankton density and biomass of each unit in the composite ecological purification system

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图 5 复合生态净化系统各单元优势FG功能群变化

Figure 5. Variation of dominant FGs of each unit in the composite ecological purification system

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图 6 复合生态净化系统营养状况

Figure 6. Nutritional status of the composite ecological purification system

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图 7 复合生态净化系统浮游植物优势FG功能群与环境因子的RDA分析

Figure 7. RDA analysis of dominant FGs of phytoplankton and environmental factors of the composite ecological purification system

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表 1 入湖河口复合生态净化系统水环境指标

Table 1. Water environment indicators of composite ecological purification system at the estuary of the lake

时间(年-月)	点位	水温/ ℃	DO浓度/ (mg/L)	pH	SD/ cm	Chla浓度/ (mg/L)	TP浓度/ (mg/L)	TN浓度/ (mg/L)	COD_Mn/ (mg/L)
2020-12	S1	9.1±0.3	8.32±0.11	7.82±0.14	45±3	11.12±2.26	0.136±0.013	1.83±0.12	7.2±0.2
	S2	7.5±0.2	7.93±0.14	7.57±0.05	52±5	10.89±1.42	0.112±0.016	1.75±0.05	6.8±0.3
	S3	6.9±0.1	7.84±0.24	7.48±0.08	47±2	7.82±0.92	0.092±0.006	1.62±0.14	6.3±0.2
	S4	6.5±0.2	8.51±0.06	7.75±0.06	50±2	7.78±0.85	0.078±0.011	1.41±0.12	4.8±0.1
	S5	8.5±0.4	8.42±0.08	7.84±0.08	53±6	9.20±1.36	0.072±0.015	1.32±0.08	4.3±0.3
	平均值	7.7±0.2^d	8.20±0.13^a	7.69±0.08^b	49±4^b	9.36±1.36^c	0.098±0.012^a	1.59±0.10^a	5.9±0.2^a
2021-03	S1	16.0±0.3	7.68±0.16	8.27±0.07	62±3	28.20±2.18	0.121±0.022	2.04±0.06	5.5±0.2
	S2	15.6±0.2	6.28±0.18	7.88±0.13	73±1	30.10±1.46	0.092±0.018	1.92±0.17	5.3±0.2
	S3	16.5±0.2	7.35±0.21	8.13±0.17	75±2	26.23±0.87	0.068±0.013	1.66±0.07	4.5±0.3
	S4	16.7±0.3	7.93±0.06	8.04±0.05	78±6	22.31±0.93	0.045±0.008	1.24±0.08	3.6±0.4
	S5	15.9±0.3	8.29±0.13	7.93±0.08	76±4	24.82±1.48	0.032±0.009	1.18±0.05	3.4±0.3
	平均值	16.1±0.3^c	7.51±0.15^ab	8.05±0.10^a	73±3^a	26.33±1.38^b	0.072±0.014^a	1.61±0.09^a	4.47±0.3^b
2021-06	S1	25.6±0.3	6.32±0.08	8.35±0.12	64±3	48.17±2.46	0.098±0.021	1.35±0.12	4.5±0.3
	S2	25.3±0.2	5.92±0.15	7.82±0.11	78±1	47.26±4.13	0.078±0.019	1.31±0.11	4.1±0.3
	S3	26.2±0.2	7.23±0.08	8.21±0.07	75±2	40.56±2.27	0.062±0.013	1.12±0.05	3.8±0.3
	S4	27.9±0.1	6.58±0.24	8.14±0.06	81±3	38.14±3.11	0.052±0.012	0.61±0.07	2.9±0.2
	S5	28.4±0.2	7.76±0.23	8.37±0.03	83±2	44.23±0.86	0.049±0.011	0.68±0.06	3.2±0.2
	平均值	26.7±0.2^a	6.76±0.16^b	8.18±0.08^a	76±2^a	43.67±2.57^a	0.068±0.015^a	1.01±0.08^b	3.7±0.3^b
2021-09	S1	23.6±0.3	7.46±0.14	7.48±0.14	70±3	36.62±0.74	0.120±0.023	1.21±0.02	4.2±0.1
	S2	24.2±0.3	7.32±0.15	7.37±0.12	77±5	32.14±1.45	0.100±0.015	1.17±0.04	4.0±0.2
	S3	22.9±0.2	8.13±0.16	7.74±0.20	78±1	26.32±1.83	0.078±0.018	1.01±0.12	3.7±0.3
	S4	24.1±0.1	7.57±0.07	7.53±0.18	82±6	20.54±0.92	0.052±0.011	0.62±0.10	2.9±0.1
	S5	22.6±0.4	8.48±0.17	8.19±0.06	95±2	18.37±1.48	0.042±0.008	0.61±0.06	2.7±0.2
	平均值	23.5±0.3^b	7.79±0.14^a	7.66±0.14^b	80±3^a	26.80±1.28^b	0.078±0.015^a	0.92±0.07^b	3.5±0.2^b
注：水环境指标数值为平均值±标准差；同一列上标不同小写字母代表组间季节性差异显著（P＜0.05）。

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表 2 复合生态净化系统环境因子与水质健康指标的Pearson相关性分析

Table 2. Pearson correlation analysis of environmental factors and water quality health indicators of the composite ecological purification system

项目	水温	DO	pH	SD	Chla	TP	TN	COD_Mn	TLI	Shannon-Wiener指数	J
水温	1
DO	−0.53^*	1
pH	0.34^*	−0.16	1
SD	0.81^*	−0.26	0.32	1
Chla	0.86^*	−0.75^*	0.44	0.56^*	1
TP	−0.34	−0.10	−0.35	−0.66^*	−0.12	1
TN	−0.67^*	−0.05	−0.12	−0.70^*	−0.29	0.70	1
COD_Mn	−0.73	0.09	−0.29	−0.86^*	−0.45^*	0.80^*	0.86^*	1
TLI	−0.32	−0.32	−0.13	−0.64^*	0.08	0.88^*	0.86^*	0.81^*	1
Shannon-Wiener指数	−0.91^*	0.60^*	−0.20	−0.68^*	−0.87^*	0.09	0.41	0.52^*	0.03	1
J	−0.79^*	0.70^*	−0.13	−0.35	−0.84^*	−0.02	0.27	0.27	−0.20	0.87^*	1
注：*表示在0.05水平相关性显著。

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