| 本文已被：浏览 2830次 下载 1675次 |
码上扫一扫！ |
|
|
| 条斑紫菜对胶州湾湿地浅海富营养化状况的生物修复效果 |
|
陈聚法1, 赵俊1, 过锋2, 张艳3, 夏斌4
|
|
1.农业部海洋渔业资源可持续利用重点开放实验室 山东省渔业资源与生态环境重点实验室中国水产科学研究院黄海水产研究所, 青岛 266071;2.农业部海洋渔业资源可持续利用重点开放实验室 山东省渔业资源与生态环境重点实验室中国水产科学研究院黄海水产研究所, 青岛 266072;3.农业部海洋渔业资源可持续利用重点开放实验室 山东省渔业资源与生态环境重点实验室中国水产科学研究院黄海水产研究所, 青岛 266073;4.农业部海洋渔业资源可持续利用重点开放实验室 山东省渔业资源与生态环境重点实验室中国水产科学研究院黄海水产研究所, 青岛 266074
|
|
| 摘要: |
| 对胶州湾湿地海域条斑紫菜Porphyra yezoensis Ueda养殖区水环境进行了现场调查和研究，对紫菜生长吸收N、P营养盐的效果进行了实验研究，在此基础上综合分析了紫菜对富营养化海水的生物修复效果。研究结果表明，条斑紫菜养殖对胶州湾湿地海水中过剩的营养盐有明显的控制作用，养殖区氮、磷营养盐和有机碳含量以及水质营养指数均低于周边对照区。实验条件下，紫菜生长吸收N、P营养盐和降低海水富营养化程度的效果显著。各实验周期水体中的无机氮含量下降幅度为17.15%～21.26%，活性磷酸盐含量下降幅度为55.73%～61.12%，表明紫菜叶状体生长对磷的吸收量明显高于对氮的吸收量。另外，各换水周期实验海水的营养指数值由2.211～2.592降至0.749～0.873，降低幅度为63.32%～69.39%，海水富营养化等级由“中度富营养”降至“贫营养”。根据胶州湾湿地海域的环境条件，通过大规模栽培大型海藻，可大量去除海水中的N、P、C等生源要素，有效降低海水富营养化水平。 |
| 关键词: 条斑紫菜 海水富营养化 生物修复 胶州湾湿地 |
| DOI： |
| 分类号: |
| 基金项目:国家海洋公益性行业科研专项(200805066)和国家科技支撑计划课题(2009BADB7B02)共同资助 |
|
| Study on bioremediation effects of Porphyra yezoensis on eutrophic condition in the seawaters of Jiaozhou Bay wetland |
|
|
| Abstract: |
| The quality of seawater in Porphyra yezoensis culturing area in the Jiaozhou Bay wetland was surveyed and studied. Experimental study on the uptake effectiveness of nutritional elements such as nitrogen and phosphorous by P. yezoensis was carried out．According to the surveyed and experimental results，the bioremediation effects of P. yezoensis on eutrophic seawater was analyzed comprehensively．The results showed that there was an obvious reducing effect on the residual nutriments in seawater of the Jiaozhou Bay wetland by cultivating P. yezoensis.The contents of nitrogen，phosphorous and organic carbon as well as eutrophication index(EI) in culturing area were all lower than those in the control area．Under experimental conditions, P. yezoensis showed significant effectiveness on the uptake of nitrogen and phosphorous as well as reduction of eutrophication level．The decrease of content of dissolved inorganic nitrogen(DIN) was 17.15%-21.26% at the various experimental cycles and that of dissolved inorganic phosphorous(DIP) was 55.73%-61.12%，indicating that the uptake amount of DIP by P. yezoensis leafy thalli growth was obviously higher than that of DIN．In addition，the eutrophication level of water decreased from medium eutrophic with EI of 2.211-2.592 to oligotrophic with EI of 0.749-0.873 and the decrease rate of EI was 63.32%-69.39%．According to the natural environmental conditions of Jiaozhou Bay wetland,by cultivating seaweeds on a large-scale，the nutritional elements such as nitrogen，phosphorous and carbon can be removed in quantity and meanwhile the eutrophication level of seawater can be reduced efficiently． |
| Key words: Porphyra yezoensis Seawater eutrophication Bioremediation Jiaozhou Bay wetland |