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探讨福建九龙江口秋茄（Ｋａｎｄｅｌｉａ ｃａｎｄｅｌ （Ｌ．） Ｄｒｕｃｅ）红树林Ｃｕ、Ｐｂ、Ｚｎ、Ｍｎ 元素的累积和生物循环。结果表明：该林地表层土壤（０～３０ ｃｍ 深）Ｃｕ、Ｐｂ、Ｚｎ、Ｍｎ 元素的储量分别为６．８６、４．２３、２５．６４和１３４．６７ ｇ／ｍ ２；植物体不同部位相应元素的含量范围分别为１．８５～６．９７、０．３７～３．７４、１６．０～２５．２和１４０～１４０５ μｇ／ｇ。群落Ｃｕ、Ｐｂ、Ｚｎ、Ｍｎ 元素的现存储量分别为８７．９８、４０．３４、３３５．３４和８００６．９９ ｍ ｇ／ｍ ２；林地残留物中相应元素的储量分别为５９３．０６、４９．２７、２４５０．７９和４３４８６．７０ μｇ／ｍ ２。群落Ｃｕ、Ｐｂ、Ｚｎ、Ｍｎ 元素的生物循环为：年吸收量分别为１０．１７、４．３２、４９．１４和２２６８．１６ ｍ ｇ／ｍ ２；年归还量分别为２．２１、０．７０、１８．６３和１５７４．９８ ｍ ｇ／ｍ ２；年存留量分别为７．９６、３．６２、３０．５１和６９３．１８ ｍ ｇ／ｍ ２；周转期分别为４０、５８、１８和５年。吸收系数、利用系数和循环系数均为Ｍｎ＞ Ｚｎ＞ Ｃｕ＞ Ｐｂ
To explore the accumulation and bio-cycle of Cu, Pb, Zn and Mn in mangrove forest of Kandelia candel (L.) Druce. The results showed that the contents of Cu, Pb, Zn and Mn in topsoil (0-30 cm depth) were 6.86, 4.23, 25.64 and 134.67 g / m 2, respectively. The contents of the corresponding elements ranged from 1.85 to 6.97, from 0.37 to 3.74, from 16.0 to 25.2 and from 140 to 1405 μg / g, respectively. The existing reserves of Cu, Pb, Zn and Mn in the community were 87.98, 40.34, 335.34 and 8006.99 m g / m 2, respectively. The reserves of the corresponding elements in the forest residue were 593.06 and 49 .27, 2450.79 and 43486.70 μg / m 2. The biocycles of Cu, Pb, Zn and Mn in the community were as follows: the annual uptake was 10.17, 4.32, 49.14 and 2268.16 m g / m 2, respectively; the annual restages were 2.21, .70, 18.63 and 1574.98 m g / m 2, respectively. The annual storage was 7.96, 3.62, 30.51 and 693.18 m g / m 2, respectively. The turnover periods were 40, 58, 18 and 5 years. Absorption coefficient, utilization factor and cycle factor are Mn> Zn> Cu> Pb