通过实地调查取样和室内分析,研究铜陵水木冲铜尾矿废弃地不同时期种植香根草(<em>Vetiveria zizanioides </em>L.) 群落(近期种植香根草群落(<em>V. zizanioides</em> communities were established in the recent stage, JX),中期种植香根草群落(<em>V. zizanioides</em> communities were established in the middle stage, ZX)和早期种植香根草群落(<em>V. zizanioides</em> communities were established in the early stage, OX))对尾矿基质化学性质、微生物量和土壤酶活性的影响,探讨人工植被恢复对铜尾矿废弃地基质系统的修复作用。结果表明:香根草的定植能延缓铜尾矿的酸化过程,且随着香根草定植时间的延长,0-5 cm和5-20 cm层尾矿基质中总氮和速效磷含量提高(其中,0-5 cm层总氮积累更加显著),OX下0-5 cm表层基质总氮和速效磷的平均值分别是JX下的4.64倍和22.44倍。基质微生物量C、N含量和脱氢酶、过氧化氢酶、脲酶活性也随香根草种植时间的延长而有不同程度的升高,且基质化学性质对微生物量和酶活性有影响,其中基质微生物量C、N含量、脱氢酶和过氧化氢酶活性均与电导率呈显著或极显著负相关性;而基质微生物量N和4种酶活性均与总氮含量呈显著或极显著正相关性,表明总氮含量是影响基质微生物量N和酶活性的主要因子;基质微生物量N、脱氢酶和过氧化氢酶活性还与速效磷含量呈极显著正相关性。基质中Cu、Pb含量对脱氢酶、过氧化氢酶活性和微生物量均有显著抑制作用,而Zn对基质微生物活性有一定的激活作用。生长在尾矿废弃地上的香根草不仅显著地改善了铜尾矿废弃地的基质化学性质,且有利于基质微生物量和酶活性的增加,是一种良好的矿业废弃地生态修复物种。;<em>Vetiveria zizanioides </em>L. is a Gramineae herbaceous perennial with rapid growth and is highly adaptable to its environment. It is often found in wasteland and lead/zinc mining abandoned soil. <em>V. zizanioides</em> is also strongly adaptable to copper mine tailings. The criteria for determining successful phytoremediation focus on both aboveground vegetation and substrate characterization. To understand the effects of artificial revegetation on the remediation of wastelands associated with the Tongling copper mine tailings in Anhui Province, we studied the dynamic changes in chemical properties, microbial biomass, enzyme activity in the tailings, and the relationships between these factors. The tailings were collected under <em>V. zizanioides</em> communities constructed on copper mine tailing wastelands at different times: JX (<em>V. zizanioides</em> communities were established in the recent stage); ZX (<em>V. zizanioides</em> communities were established in the middle stage); and OX (<em>V. zizanioides</em> communities were established in the early stage). The results showed that the tailings under the ZX and OX communities, had higher pH values and lower electrical conductivity and available Cu and Pb concentrations than the tailings under the JX community, indicating that the process of tailings acidification slowed down after the establishment of the <em>V. zizanioides</em> community. As the <em>V. zizanioides</em> community developed over time, the total N and available P in the tailings at 0-5 cm and 5-20 cm depths increased; with the total N and available P in the tailings at 0-5 cm under the OX 4.64 and 22.44 times higher, respectively than at the same depth under the JX. The total N accumulation at 0-5 cm was significantly higher than at the 5-20 cm depth, indicating the effect of the phytoremediation on improving the substrate chemical properties. With increased plantation time, the dehydrogenase, catalase and urease enzyme activities and the microbial biomass C and N contents also gradually increased at the 0-5 cm and 5-20 cm depths, but the alkaline phosphatase activity did not increase. The dehydrogenase and catalase activities and the microbial biomass C and N contents were all either extremely significantly or significantly negatively correlated with the electric conductivity. However, the microbial biomass N contents and all soil enzyme activities were significantly positively correlated to the total N content, indicating that total N was a dominant influence on soil enzyme activities. The microbial biomass and most soil enzyme activities decreased with increasing Cu and Pb contents, and the dehydrogenase and catalase activities were most sensitive to Cu, but less sensitive to Zn. The <em>V. zizanioides</em> has shown a significant ability to improve the chemical properties of tailings, and also to increase microbial biomass and soil enzyme activities. It is an adaptive plant species, and is recommended for the ecological rehabilitation of copper mine tailing wastelands.