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作 者 ：郑文教, 连玉武, 郑逢中, 林鹏

期 刊 ：植物生态学报 1996年 20卷 1期 页码：20-27

关键词：红树林；红海榄；重金属动态；

Keywords:Mangrove, Rhizophora stylosa, Heavy metal element dynamic,

摘 要 ：探讨了广西英罗湾红海榄红树林重金属Cu、Pb、Zn、Cd、Cr元素的累积及动态。结果表明：植物体不同部位元素的含量范围，分别为Cu 0.433～1.21、Pb 0.369～1.88、Zn 2.94～7.66、Cd0.020～0.233和Cr0.330～0.562μg／g。林地残留物组分元素含量远高于植物体及凋落物组分含量。该群落Cu、Pb、Zn、Cd、Cr的现存储量，分别为28.73、25.25、143.68、3.14和14.61mg／m2。林地残留物相应元素的储量，分别为271.68、323.41、1983.70、8.18和34.44μg／m2。群落Cu、Pb、Zn、Cd、Cr元素的生物循环为：年吸收量分别为1351.70、1613.12、8808.37、240.74和759.30μg／m2；年存留量分别为842.46、806.91、4694.10，94.88和464.80μg／m2；年归还量分别为509.24、806.21、4114.27、145.86和294.50μg／m2；周转期分别为56、31、35、22和50年；流动系数Cd>Pb、Zn>Cu、Cr。

Abstract:The accumulation and dynamic of heavy metal, Cu, Pb, Zn, Cd and Cr elements were studied in Rhizophora stylosa mangrove community at Yingluo Bay of Guangxi, China. The results showed that: 1) In different parts of the plant the contents of the elements were. Cu 0.433～1.21, Pb 0.369～1.88, Zn 2.84～7.66, Cd 0.020～0.233 and Cr 0.330～0.562(μg/g). The contents of the elements in residues were much higher than those in the plant and litter fall.2)The pool amounts of the elements in standing crop of the community were. Cu 28.73, Pb 25.25, Zn 143.68, Cd 3.14 and Cr 14.61(mg/m2). The pool amounts of the elements in residues were: Cu271.68, Pb 323.41, Zn 1983.70, Cd 8.18 and Cr 34.44(g/m2). 3) The biological cycles of the elements in the community were: Annual retention, Cu 1351.70, Pb 1613.12, Zn 8808.37, Cd 240.74 and Cr 759.30 (g/m2); Annual retention: Cu 843.46, Pb 806.921, Zn 4694.10, Cd 94.88 and Cr 464.80 (g/m2); Annual return Cu. 509.24, Pb 806.21, Zn 4114.27, Cd 145.86 and Cr 294.50 (g/m2). 4) the turnover period was: Cu 56, Pb 31, Zn 35, Cd 22 and Cr 50 (a) . The flow coefficients were Cd>Pb and Zn>Cu and Cr.

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