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Volume 34 Issue 2
Mar.  2015
Article Contents

Citation:

Distribution of urea section and its affecting factors in red-tide-frequent-occurrence area in spring

  • Received Date: 2013-12-24
    Accepted Date: 2014-06-05
  • Based on the 7 times of ZA section surveys in Dong Sea from March 31 to May 27 in 2011, characterization of urea sectional distribution in this area and its affecting factors during the outbreak of Harmful Algal Blooms were analyzed. The results showed that the concentration of urea ranged from 0.06 to 3.27 mol/L during outbreak of diatom bloom from March 31 to April 28, mainly influenced by Changjiang dilution water. It decreased a lot and remained 0.12~2.71 mol/L when dinoflagellate red tide broke out in May, affected by metabolism of phytoplankton significantly. In the cruises, the high-value region of urea concentration presented characteristic of transferring far away from coastal area and then slowly closing the inshore. The whole urea contents showed a decreasing trend with the passing of time. The level of urea concentration during outbreak of dinoflagellate red tide was less than that when diatom red tide outbroke and its low area was corresponded with the high values of the concentration of chlorophyll, suggesting that the effective absorption and utilization of urea for dinoflagellate was one of the reasons to maintain a high incidence of dinoflagellate red tide in East China Sea.
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  • [1] 国家海洋局.2011年中国海洋环境状况公报[R].北京:海洋出版社, 2012.[4]张传松, 王修林, 朱德弟, 等.营养盐在东海春季大规模赤潮形成过程中的作用[J].中国海洋大学学报:自然科学版, 2007, 36(7):1002-1006.[5]王金辉, 黄秀清.具齿原甲藻的生态特征及赤潮成因浅析[J].应用生态学报, 2003, 14(7):1065-1069.[6]刘新成, 沈焕庭, 黄清辉.长江入河口区生源要素的浓度变化及通量估算[J].海洋与湖沼, 2002, 33(3):332-340.[7]沈志良, 刘 群, 张淑美, 等.长江和长江口高含量无机氮的主要控制因素[J].海洋与湖沼, 2001, 32(5):465-473.[8]宋金明.海洋生物地球化学的产生与发展[J].世界科技研究与发展, 2000, 22(3):72-74.[15]黄凯旋, 谢雅慧, 吕颂辉.米氏凯伦藻对氮源的吸收利用特征[J].生态环境学报, 2009, 18(2):453-457.[16]胡章喜, 徐 宁, 段舜山, 等.尿素对中国近海3种典型赤潮藻生长的影响[J].环境科学学报, 2010, 30(6):1265-1270.[17]钱佐国, 孙明昆, 杨炼锋, 等.测定海水中尿素的双乙酰单肟法研究[J].黄渤海海洋, 1984, 2(1):66- 71.[18]李 慧, 王江涛.东海原甲藻与中肋骨条藻的种间竞争特征[J].生态学报, 2012, 32(4):1115-1123.[19]吕颂辉, 欧美珊.不同N源及N/P对东海原甲藻生长的影响[J].海洋环境科学, 2006, 25(2):33-36.[20]吴 婷, 田小亭, 刘召辉, 等.浒苔对不同氮源吸收特性的初步研究[J].海洋科学, 2011, 35(4):51-54.[21]石晓勇, 王修林, 韩秀荣, 等.长江口邻近海域营养盐分布特征及其控制过程的初步研究[J].应用生态学报, 2003, 14(7):1086-1092.[23]孙 霞, 王保栋, 王修林, 等.东海赤潮高发区营养盐时空分布特征及其控制要素[J].海洋科学, 2004, 28(8):28-32.[25]徐 立, 吴瑜端.有机氮化合物对海洋浮游植物生长的影响[J].厦门大学学报:自然科学版, 1995, 34(5):824-828.[28]王保栋, 战 闰, 藏家业.长江口及其邻近海域营养盐的分布特征和输送途径[J].海洋学报, 2002, 24(1):53-58.[29]王保栋.黄海和东海营养盐分布及其对浮游植物的限制[J].应用生态学报, 2003, 14(7):1122-1126.[30]朱建荣, 肖成猷, 沈焕庭.夏季长江冲淡水扩展的数值模拟[J].海洋学报, 1998, 20(5):13-22.[31]毛汉礼, 甘子钧, 蓝淑芳.长江冲淡水及其混合问题的初步探讨[J].海洋与湖沼, 1963, 5(3):183-206.
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Distribution of urea section and its affecting factors in red-tide-frequent-occurrence area in spring

  • 1. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China;
  • 2. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China;
  • 3. National Marine Hazard Mitigation Service, Beijing 100194, China;
  • 4. Shandong Marine Resource and Environment Research Institute, Yantai 264006, China

Abstract: Based on the 7 times of ZA section surveys in Dong Sea from March 31 to May 27 in 2011, characterization of urea sectional distribution in this area and its affecting factors during the outbreak of Harmful Algal Blooms were analyzed. The results showed that the concentration of urea ranged from 0.06 to 3.27 mol/L during outbreak of diatom bloom from March 31 to April 28, mainly influenced by Changjiang dilution water. It decreased a lot and remained 0.12~2.71 mol/L when dinoflagellate red tide broke out in May, affected by metabolism of phytoplankton significantly. In the cruises, the high-value region of urea concentration presented characteristic of transferring far away from coastal area and then slowly closing the inshore. The whole urea contents showed a decreasing trend with the passing of time. The level of urea concentration during outbreak of dinoflagellate red tide was less than that when diatom red tide outbroke and its low area was corresponded with the high values of the concentration of chlorophyll, suggesting that the effective absorption and utilization of urea for dinoflagellate was one of the reasons to maintain a high incidence of dinoflagellate red tide in East China Sea.

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