关键词: 矿地, 尾矿, 生态恢复, 植物修复, 退化生态系统

Abstract: Correlation and cluster analyses on the enzyme activities and chemical-biological properties of eight red soils showed that soil urease, invertase, phosphatase and catalase activities correlated significantly with soil organic carbon,total nitrogen and total phosphorous.Similar results of soil fertility evaluation were obtained by using soil enzyme activities and by using soil chemical-biological properties,indicating that soil enzyme activity could be used as an index of evaluating red soil fertility.The enzyme activities of fresh soil were generally greater than those of air-dried sample,and more closely correlated with soil fertility.