基于AQUATOX模型的白洋淀湖区多溴联苯醚(PB-DEs)的生态效应阈值与生态风险评价研究

张璐璐; 刘静玲; 张少伟; 贺晟晨; 郭春梅; 曹瑞仙

doi:10.7524/AJE.1673-5897-20140502001

1. 北京师范大学环境学院, 水环境模拟国家重点实验室, 北京 100875;

2. 濮阳水文水资源勘测局, 濮阳 457000;

3. 北京绵世投资集团股份有限公司, 北京 100005;

4. 开封市城区水利局, 开封 475000;

5. 安阳水文水资源勘测局, 安阳 455000

作者简介: 张璐璐(1985-):女,博士后,主要研究方向为湖泊生态模型与污染物生态阈值研究。E-Mail:zhanglulu19850703@163.com

基金项目:

水体污染控制与治理专项项目，海河流域河流物理过程演变与环境流量保障技术与应用示范(2012ZX07203-006)，中国博士后科学基金项目(2014M550647)。

中图分类号: X171.5

AQUATOX Model for Ecological Threshold and Ecosystem Risk Assessment of Polybrominated Diphenyl Ethers (PBDEs) in Baiyangdian Lake Ecosystems

1. State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China;

2. Puyang Hydrology and Water Resource Bureau, Puyang 457000, China;

3. Beijing Mainstreets Investment Group Corporation, Beijing 100005, China;

4. Kaifeng City Water Conservancy Bureau, Kaifeng 475000, China;

5. Anyang Hydrology and Water Resource Bureau, Anyang 455000, China

Fund Project:

摘要: 为了准确定量生态系统尺度下持久性有机污染物(POPs)的直接毒性效应和通过食物网传递的间接生态效应,建立POPs浓度与生态效应的量化关系,本研究以强人为干扰湖泊白洋淀为研究区,建立了湖泊底栖-浮游耦合食物网,运用AQUATOX模型评价典型POPs——多溴联苯醚(PBDEs)的水生态系统风险,判定关键浓度阈值。模型校正结果表明,该模型能够充分模拟白洋淀中18个优势种群生物量的季节变化过程;敏感性分析结果表明该模型对温度和呼吸速率参数敏感;风险评价的结果表明AQUATOX模型能够有效的评估PBDEs的直接毒性效应和间接生态效应,AQUATOX模型得到的最大无影响效应浓度(NOEC)要比实验室中的NOEC低1~2个数量级。因此,在自然生态系统中PBDEs的生态风险难以根据单一种群的毒性数据进行外推,而AQUATOX模型成为自然生态系统中PBDEs风险评价的可靠方法,能够判定在"可接受风险"水平时污染物的浓度阈值。AQUATOX模型为污染物环境基准的制定提供了较为可行的方法,进而为化学污染物的早期预警和风险管理提供决策依据。

Abstract: In order to exactly quantify the direct toxic effect and the indirect ecological effect of persistent organic pollutants (POPs) on ecosystem scale through foodwebs, the quantitative relation between the concentration and ecological effects were established. For this study, the AQUATOX model was applied to evaluate the ecological risk of polybrominated diphenyl ethers (PBDEs) in a highly anthropogenically disturbed lake-Baiyangdian Lake, and the pelagic-benthic coupled foodweb was established. Model calibration and validation results indicated that the model can adequately describe the dynamics of 18 biological populations. Sensitivity analysis results suggested that the model is highly sensitive to temperature limitation and respiration rate. Risk estimate results showed that the AQUATOX model was effective in estimating risks associated with the direct toxic effects of each population and the indirect ecological effects distributed through the coupled pelagic benthic food web. Benchmarks derived from AQUATOX-Baiyangdian were approximately one order of magnitude less than the benchmarks derived from NOEC in experiment. Therefore, PBDEs risk estimate results demonstrate that estimated risk for natural ecosystems cannot be fully explained by single species toxicity data alone. The AQUATOX model could provide a good basis in ascertaining ecological protection levels of "chemicals of concern" for aquatic ecosystems. AQUATOX can potentially be used to provide necessary information corresponding to early warning and rapid forecasting of pollutant transport and fate in the management of chemicals that put aquatic ecosystems at risk.

Key words:

polybrominated diphenyl ethers (PBDEs) /
ecosystem risk /
AQUATOX model /
pelagic-benthic coupled foodweb /
ecological threshold

基于AQUATOX模型的白洋淀湖区多溴联苯醚(PB-DEs)的生态效应阈值与生态风险评价研究

作者简介: 张璐璐(1985-):女,博士后,主要研究方向为湖泊生态模型与污染物生态阈值研究。E-Mail:zhanglulu19850703@163.com
1. 北京师范大学环境学院, 水环境模拟国家重点实验室, 北京 100875;

2. 濮阳水文水资源勘测局, 濮阳 457000;

3. 北京绵世投资集团股份有限公司, 北京 100005;

4. 开封市城区水利局, 开封 475000;

5. 安阳水文水资源勘测局, 安阳 455000

收稿日期: 2014-05-02

基金项目:

水体污染控制与治理专项项目，海河流域河流物理过程演变与环境流量保障技术与应用示范(2012ZX07203-006)，中国博士后科学基金项目(2014M550647)。

关键词:

AQUATOX Model for Ecological Threshold and Ecosystem Risk Assessment of Polybrominated Diphenyl Ethers (PBDEs) in Baiyangdian Lake Ecosystems

1. State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China;

2. Puyang Hydrology and Water Resource Bureau, Puyang 457000, China;

3. Beijing Mainstreets Investment Group Corporation, Beijing 100005, China;

4. Kaifeng City Water Conservancy Bureau, Kaifeng 475000, China;

5. Anyang Hydrology and Water Resource Bureau, Anyang 455000, China

Received Date: 2014-05-02

Fund Project:

Keywords:

polybrominated diphenyl ethers (PBDEs) /
ecosystem risk /
AQUATOX model /
pelagic-benthic coupled foodweb /
ecological threshold

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