镉污染土壤的治理及植物修复

Cleaning up through phytoremediation: a review of Cd contaminated soils

由于工业“三废”的排放,使农田遭受不同程度镉的污染,因而对人畜健康构成了威胁。本文对土壤镉的污染现状、治理途径及其原理、优缺点、可行性作了简要的回顾,对土壤镉污染植物修复技术类型、原理、特点以及基因工程等现代生物技术在镉污染植物修复技术中的应用前景作了进一步的展望,为实现对镉污染土壤进行有效的生态整治与安全高效益的利用提供了新的技术途径。

Cd contamination of agricultural soils as a result of industrial discharge is a serious threat to human and animals' health. Current status of Cd pollution, remedial mechanisms, advantages and disadvantages of different methods, and feasibility of application are reviewed in this article. In addition, principle, characteristics and new biotechnological methods involving genetic engineering used in phytoremediation of Cd contaminated soils and future prospect are discussed in details. The alternative methods provide novel approaches to restore the polluted ecological systems using highly efficient plants and organisms.