Absorption and Accumulation of Cu、Sb、Cd、Pb in wetland soils by Zizania latifolia from the South Dongting Lake

Abstract

Abstract: To study the regulations on absorption and accumulation of heavy metals in Zizania latifolia.　we had collected some specimens of the dominant species of Z. latifolia which live in heavy metal polluted area of the South of Dongting Lake and its rhizosphere soil，then we analysised the content of Cu，Sb，Cd，Pb in them.　Results showed that the pollution level in soil was Sb > Cd > Cu，but the content of Pb did not exceed the stipulated standards.　Living in these heavy metal polluted soils，each part of Z. latifolia had no enrichment of Sb.　However，the ability of absorption and accumulation of other three kinds of heavy metals was root > leaf > stem.　 For different areas of the South Dongting Lake，acumulation ability of heavy metals in Z. latifolia was different.　In Xi Jihong2 area, the enrichment factor of Cu in roots of Z. latifolia was significantly higher than that of other six areas (P <0.05).　The enrichment factor of Cu in roots of Z. latifolia which live in Lu Mahu2 area and those of Z. latifolia which live in Xi Jihong2 area had no significant differences(P> 0.05)，but their enrichment factor both were significantly higher that of other five areas (P <0.05).　As a result，Z. latifolia has good prospect of application for remediating the region of the heavy metal pollution in the South Dongting Lake.

Peng Xiaoyun, Zhao Yunlin, Lei Cunxi, Dai Meibin, Yi Hecheng. Absorption and Accumulation of Cu、Sb、Cd、Pb in wetland soils by Zizania latifolia from the South Dongting Lake[J]. Chinese Agricultural Science Bulletin, 2009, 25(13): 206-210.

References

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