根际环境内污染土壤的生物修复研究

指出了根际环境是根系和土壤相互耦合的生态和环境界面，对根际环境在污染修复过程中的研究成为当前土壤学和土壤生态学研究中的一个重要课题。总结了根际环境内根系和根系分泌物对污染土壤中重金属，有机污染物的吸收、降解、固定的生态功能；根际环境内的细菌对污染土壤中重金属，有机污染物的吸附、氧化一还原以及趋化性作用；根际环境内的菌根真菌对污染土壤中重金属，有机污染物的吸收、屏障及螯合作用；根际环境内的土壤动物对污染土壤中重金属，有机污染物的破碎、分解、消化和富集作用，并探讨了应该加深的研究方向。

Bioremediation of Contaminated Soil Within the Rhizosphere Environment

The rhizosphere is an important environmental interface, and plays an extremely important role in the bioremediation of contaminated soil, thus,it become a hot topic in the current soil and environmental sci- ence. This article firstly discusses the absorption, degradation, fixation ecological functions of plant roots and root exudates to remedy contaminated soils, accumulate and solidify heavy metals, and absorb and degrade or- ganic pollutants in rhizosphere. And then it analyzes the adsorption, oxidation--reduction and chemotaxis functions of bacteria to remedy the heavy mentals and organic pollutants in contaminated soils in the rhizo- sphere environment. Moreover,it also introduces the absorption barriers and chelation functions of mycorrhi- zal fungi in the rhizosphere environment. Finally,it discusses the crushing, decomposition, digestion and en- richment functions of the soil fauna in the rhizosphere. Besides, the article also points out the directions of fu- ture research.