人工藻礁含铁量对附着生物影响的初步研究

在一定量的混凝土中分别添加不同量的铁粉或铁屑,制成人工藻礁,在海中观测其生物的附着与生长状况,分析人工藻礁含铁量对附着生物的影响,探讨废弃铁粉、铁屑在建造人工鱼礁方面的可行性。结果表明：1）在人工藻礁模块里加入颗粒状铁,对其表面生物的附着效果产生显著影响。3次调查结果显示：含铁粉藻礁生物的平均附着量为0.236 kg/m2,含铁屑藻礁生物的平均附着量为0.21 kg/m2,无铁模块生物的平均附着量为0.082 kg/m2;2）投放人工藻礁3.5个月后,含铁率为0.05%、0.10%、0.50%、1.00%、1.96%、2.91%模块上平均附着生物量分别为0.168、0.269、0.198、0.169、0.345、0.147kg/m2,含铁率为1.96%的铁屑组鱼礁模块附着效果最好,附着生物量为0.459 kg/m2,其强度达到12.5MPa,为含铁藻礁优选配比,而不含铁的藻礁模块附着效果最差。

Effect of iron proportion in artificial reefs on fouling organisms

The effects of the artificial alga concrete reefs made of different proportional scrap iron and iron powder(a machine trash) on the attachment and growth of fouling organisms were studied,and the feasibility of trash iron on construction of artificial reefs was discussed.The results showed that the artificial alga concrete reefs had significant influence on attachment of the organisms on reefs surface.The three surveys revealed that the average amount of organisms attaching on iron-powder reefs was 0.236 kg...