关键词: 土壤铜污染；超积累；植物修复

Abstract:

Cu is an essential micronutrient for plant, but Cu excess will seriously affect the plant growth and animal health. With the development of modern agriculture and industry, Cu has become one of the main pollution elements in China's heavy metal contaminated soil. As a research focus and frontier field in remediation of environmental contamination, phytoremediation is a green technology which has various advantages and is incomparable to other traditional soil contamination remediation methods. In recent years, studies on phytoremediation of Cu polluted soil in china are developing rapidly. Elsholtzia splendens, Commelina communis, Ricinus communis and other copper hyper-accumulators have been discovered. Meanwhile, organic acids and microbial resistance to Cu can also enhance the repair of hyper-accumulators. This article reviews the general principles of phytoremediation, introduces the effect of hyper-accumulators on Cu enrichment, which has attracted more study focus at present. It also expounds hyper-accumulators tolerance to Cu, its detoxification mechanism and other factors-invigoration effect.

Key words: soil copper contamination, hyper-accumulator, phytoremediation