摘要
沉积物质量评价"三元法(sediment quality triad,SQT)"是一种基于生物效应的综合评价方法,主要包括化学、毒理、生态3个基元。尽管各基元可通过选择适当参数,单独反映沉积物中致污物的环境风险,但以证据权重法结合其三基元,则更能全面描述沉积物中有害化学物质与生物效应之间的因果逻辑关系,加强化学致污物及其污染水平的生态相关性,为环境治理及修复等提供重要依据。从基元构成和数据解译两方面回顾了SQT方法的研究进展,介绍了该法在国内外的应用实例,剖析了提高评价可靠性的相关手段,并结合我国近海沉积物环境质量评价现状,展望了SQT法的未来研究及应用前景。结果表明,通过替换、改进现有基元或增加其它基元的方式可提高SQT评价结果的可靠性,而引入新的数据解译方法则可使本方法的评价过程更加透明、评价结果更加直观。适于评估化学胁迫对沉积物等环境介质造成的损害,已广泛应用于世界各地,是目前主要的综合评价方法,具有良好的研究与应用前景。
Sediment quality triad（SQT）,one of the important sediment quality assessment approaches,is defined as a conceptual and integrated technique based on biological response.It mainly comprises three complementary levels of evidence including sediment chemistry,laboratory sediment toxicity test and in situ benthic community structure.Each of the three traditional levels of evidence alone can independently reflect the environment risk of the contaminant in sediment by selecting suitable parameters.However,by combining these three levels of evidence,this approach can provide a comprehensive assessment in a weight of evidence means,which enhances the causal-effect relationship between the elevated chemical exposure and adverse biological effect,furthers the understanding of the ecology relevance between the hazardous materials and pollution levels.As consequences,it provides a robust basis for costal environmental control and remediation.Our objective is to focus on the newly advancement of SQT approach,draw experience and lessons to promote the coastal sediment quality assessment in China.This paper reviewed the history and development of the method detailed in 2 aspects including evidence composition,data simplification and interpretation method.We further investigated techniques to enhance the reliability of SQT evaluation and prospect for the method and application research in view of our country′s current status of coastal sediment quality assessment.Literature analysis shows that diversifying levels of evidence and improving data interpretation method can make evaluation result more reliable and understandable.SQT assessment can be more transparency by formalize and standardize the current interpretive tools,for instance,the tabular decision matrices.The SQT has been intensively used in the North America and frequently adopted as environmental management tools in European countries especially the Spain.It is one of the most applicable comprehensive assessment methods that the SQT intends to evaluate the adverse effect caused by chemical stressor in mediums like sediment.However,it should further develop to resolve and enhance the reliability,transparency of evaluation.
出处
《生态学报》
CAS
CSCD
北大核心
2012年第14期4566-4574,共9页
Acta Ecologica Sinica
基金
国家海洋局环境评价项目(DOMEP(MEA)-01-01)
中国科学院知识创新方向群项目(KZCX2-YW-Q07-02)
作者简介
通讯作者:宋金明.E-mail:jmsong@ms.qdio.ac.cn.
