摘要
随着土壤重金属污染的加剧,单纯的化学分析方法已不能真实地判别出重金属是否会对环境产生不利影响,因此需要建立有效的生物评价体系来辅助评价。蚯蚓广泛分布于土壤中并处于食物链的底部,其生化指标的变化对重金属污染起到早期预警作用,已被广泛应用到土壤重金属污染评价中。本文简要概述了蚯蚓生物标志物的发展,着重阐述了几种重要的生物标志物(抗氧化酶系统、金属硫蛋白、基因表达),来评价土壤重金属污染水平及作用机理,并对未来的蚯蚓生物标志研究和发展进行展望。
As the increasing heavy metal contamination in soil, risk assessment of heavy metal should not only be based on the chemical analysis, which could not truly distinguish whether heavy metal was harmful to the environment. Thus, biological assessment system should be established to evaluate the risk caused by heavy metal pollution. Earthworms are widely spread in the soil ecosystem and at the bottom of food chain. The changes in earthworm bio- chemical could be applied as earlier indicators to discern heavy metal pollution. In this paper, the history of biomarkers and some kinds of earthworm biomarkers （e.g. antioxidant enzymes, metallothionein and gene expression） were discussed on heavy metal assessment and its action mechanism. Besides, the further study of earthworm biomarker was pointed.
出处
《能源环境保护》
2013年第2期9-13,共5页
Energy Environmental Protection
基金
杭州市环境保护科研计划"典型农用土壤环境质量安全监测评价体系构建"(2011008)
浙江省新苗人才计划"土壤重金属铅污染的蚯蚓分子标记物研究"(2012R408066)
