摘要
探讨了福建九龙江口秋茄红树林对重金属元素Ｃｄ、Ｃｒ、Ｎｉ的累积及动态，结果表明；该林区表层土壤（０－３０ｃｍ）深Ｃｄ、Ｃｒ、Ｎｉ元素的储量分别为２１．６０、１０９２．６３和３９０３．９０ｍｇ／ｍ＾２，秋茄植物体各部位Ｃｄ、Ｃｒ、Ｎｉ一的范围分别为０．０４４４－０．０９１２、０．０８５－０．２７５和０．３２６－１．０００μｇ／ｇ，该群落现存生物量中，Ｃｄ、Ｃｒ、Ｎｉ元素的储量分别为１１６６．８５。
The accumulation and dynamic of Cd, Cr and Ni were studied in Kandela candel(L. )Druce mangrove community in Jiulong River Estruary of Fujian. The results showed that: the amounts of Cd, Cr, and Ni in the forest soil(depth 0 -30 cm) were 21. 60, 1092. 63 and 3902. 90 (mg/m￣2). In different parts of the plant, the contents of the elements were Cd 0. 0444-0. 0921 , Cr 0. 085-0. 275 and Ni 0. 326 1. 00 (μg/g). The pool amounts of the elements in standing crop of the community were 1166. 85 μg/m￣2 for Cd , 3646. 48 μg/m￣2 for Cr and 10506. 91 μg/m￣2 for Ni. The pool amounts of the elements in the residues were Cd 13.83, Cr 35. 07 and Ni 232.61 (μg/m￣2). The biological cycles of the elements in the community were: annual uptake Cd 179. 60, Cr 703. 15 and Ni 1611. 72 (μg/m￣2) ; annual retention Cd 107. 70, Cr 322. 93 and Ni 917. 13 (μg/m￣2) ; annual retrun Cd 71. 90, Cr 380. 22 and Ni 694. 59 (μg/m￣2); turnover period Cd 16, Cr 10 and Ni 15(year).
出处
《环境科学学报》
CAS
CSSCI
CSCD
北大核心
1996年第2期232-237,共6页
Acta Scientiae Circumstantiae
基金
国家自然科学基金
