【摘要】 研究了污水处理下红树林对Cu、Pb、Zn、Cd4种重金属元素的吸收、累积、分布和循环。结果表明 ,林地表层土壤 4种元素的储量关系为Zn >Pb >Cu >Cd ;对土壤中 4种重金属富集能力的大小依次为桐花树 >秋茄 >白骨壤。该群落中Cu、Pb、Zn、Cd的现存累积量分别为 1 41 796、 4 55 967、1 2 2 0 2 2 4和 9 4 93mg/m2 ;年吸收量分别为 1 8 98、 1 6 4 3、 89 1 9和 0 39mg/m2 ;年归还量分别为 1 4 64、7 2 6、 59 2 9和 0 1 6mg/m2 ;年存留量分别为 4 33、 9 1 7、 2 9 2 0和 0 2 3mg/m2 ;周转期分别为 1 0、 63、 2 1和 58年。更多还原

【Abstract】 The absorption,accumulation,distribution and cycle of Cu,Pb,Zn and Cd by the mangrove are studied.The results show that the amount ratio of the four heavy metals stored in the surfave soil of the wetland is Zn>Pb>Cu>Cd>.The concentration ability is A.Corniculatum>K.candel>A.Marine.The existing accumulation of Cu,Pb,Zn and Cd in the community are respectively 141 796mg/m 3,455 967mg/m 3,1220 224 mg/m 3,9 493mg/m 3.The annual absorption are 18 98mg/m 3,16 43mg/m 3,89 19mg/m 3 and 0 39mg/m 3.The annual return are 14 64mg.m 3,7 26mg/m 3,59 29mg/m 3,and 0 16mg/m 3.The annual retention are 4 33mg/m 3,9 17mg/m 3,29 20mg/m 3 and 0 23 mg/m 3. The turn over period are 10,63,21 and 58 years.更多还原