Abstract:

The study is aiming at assaying the soil fundamental nutrients under typical vegetation（Miscanthus sinensis，Arthraxon lanceolatus，Glycine soja Siebet Zucc）dominant in the reclamatted copperminetailings in Tongling City， Anhui Province By analyzing the characteristics of the nutrient contents as well as the correlations among these nutrients under different dominant vegetation， this study is expected to provide a scientific basis for choosing the right vegetation in the ecological restoration of copper tailings and the development of soil biodiversity The results are as follows. （1） Among the three dominant vegetation， the content of soil organic matter （180-286 g/kg）， total phosphorus （0276-0438 g/kg） and total potassium （160-207 g/kg） were significantly different， while little variation of total nitrogen （41-46 g/kg） was found The highest organic matter content was found under M sinensis followed by G soja， and A lanceolatus is the lowest A highest total phosphorus content was found under A lanceolatus， followed by G soja and M sinensis The regular pattern was quite similar between total nitrogen and total phosphorus under different vegetation The highest total potassium was found under M sinensis， followed by A lanceolatus and G soja （2） The nutrients under G soja showed close relationships among each other， moderately or highly significantly positively correlated and the differences between them were not significant  Under M sinensis，organic matter content showed highly significant correlation to total nitrogen （r=099）. The correlations between total phosphorus and organic matter， and between total phosphorus and total nitrogen were not significant Under A lanceolatus， highly positive close correlation was found between organic matter and total nitrogen （r=097）， while close negative correlations of total phosphorus， with organic matter and total nitrogen， and between total potassium and total nitrogen was found （3） Highly close positive correlation between total phosphorus and total potassium was found （r=090，r=097，r=099）for all the three dominant vegetation （r was 090， 097 and 099 for  M sinensis， A lanceolatus  and G soja， respectively）. Furthermore， the ability to degrade pH and metal Cu ranked in the following order： G soja>A lanceolatus>M sinensis This study further indicates that the change of vegetation types has important effects on the nutrient， circulation and restoration of soil