海藻修复富营养化海域与内陆缺碘环境的潜力

发布时间：2018-07-29 05:55

【摘要】：系统测定了采自中国渤海、黄海、东海、南海海域的大型海藻——海带的主要营养元素和微量营养元素含量水平,分析了海带营养元素的区域性差异及其对富营养化海域水体中氮磷的去除能力.结果显示,海带中的氮、磷和碘的含量分别是海水中相应元素含量的9.80×104倍、2.00×105倍和5.80×104倍.同时,利用海带制成海藻有机碘肥,培育富碘蔬菜,其碘含量可比普通蔬菜高10余倍.揭示了外源碘对提高土壤碘背景含量的生物地球化学过程.从而建立了海带修复生态环境的潜在模式,将修复沿海水域富营养化和改善缺碘生态环境的技术串联起来,为建立包括规模化海带养殖、海带发酵提取生物质能源、海藻有机碘肥生产、含碘植物性食品培育在内的生态产业链,提供了技术路线.
[Abstract]:The contents of major nutrient elements and micronutrient elements in seaweed kelp collected from Bohai Sea, Huang Hai, East China Sea and South China Sea were systematically determined. The regional differences of nutrient elements in kelp and their removal capacity of nitrogen and phosphorus in eutrophic waters were analyzed. The results showed that the contents of nitrogen, phosphorus and iodine in kelp were 9.80 脳 10 ~ 4 times and 5.80 脳 10 ~ 4 times as much as those in seawater, respectively. At the same time, seaweed organic iodine fertilizer was made from kelp, and the iodine content of rich iodine vegetables was more than 10 times higher than that of ordinary vegetables. The biogeochemical process of increasing the background content of iodine in soil by exogenous iodine was revealed. In order to establish a potential model of kelp to repair the ecological environment, the technology of repairing eutrophication in coastal waters and improving the ecological environment of iodine deficiency were connected together. In order to establish a large scale kelp culture, kelp fermentation was used to extract biomass energy. The production of organic iodine fertilizer from seaweed and the cultivation of plant food containing iodine provide the technical route.
【作者单位】：浙江大学环境与生物地球化学研究所;浙江省农业科学院;中国地质调查局中国农业地质应用研究中心;
【基金】：国家自然科学基金(40873058,40373043) 浙江省国土资源厅土地环境地质调查与应用示范项目(2014002)
【分类号】：Q949.2;X55

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