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春季西北太平洋水体中甲烷和氧化亚氮的分布及海气交换通量
  • ISSN号：0029-814X
  • 期刊名称：《海洋与湖沼》
  • 时间：0
  • 分类：P734.2[天文地球—海洋化学;天文地球—海洋科学] P732[天文地球—海洋科学]
  • 作者机构：[1]中国海洋大学海洋化学理论与工程技术教育部重点实验室
  • 相关基金：科技部国际科技合作项目“西北太平洋近海与大洋生态系统对全球变化的响应”,2010DFA91350号;国家自然科学创新研究群体科学基金“海洋有机生物地球化学”,41221004号;高等学校学科创新引智计划项目“海洋化学创新引智基地”,B13030号
作者： 韩玉[1], 张桂玲[1]
关键词： 甲烷(CH4), 氧化亚氮(N2O), 西北太平洋, 垂直分布, 海-气交换通量
中文摘要：

于2010年5—6月搭乘日本KH10-1航次,对西北太平洋两个不同深度站位甲烷(CH4)和氧化亚氮(N2O)的垂直分布及海气交换通量进行了研究。结果显示:研究海域表层海水中CH4和N2O浓度分别为(2.55±0.22)nmol/L和(7.50±1.11)nmol/L,饱和度分别为126%和116%,均处于轻度过饱和状态。在垂直方向上,CH4浓度分布呈现次表层极大的特征,次表层以下CH4浓度随深度增加逐渐减小。CH4次表层极大值可能是由于细菌利用甲基化合物进行好氧产生和在悬浮颗粒物、浮游动物或其他海洋生物肠道内厌氧微环境产生的综合作用造成的。N2O浓度随深度的增加而增大,在跃层下部达到最大值,N2O与溶解氧的垂直分布呈镜像关系。水体中N2O主要通过硝化过程产生。利用LM86和W92公式计算得到CH4的海气交换通量分别为(0.76±0.57)μmol/(m2·d)和(1.57±0.67)μmol/(m2·d),N2O的海气交换通量分别为(1.96±0.24)μmol/(m2·d)和(3.08±0.38)μmol/(m2·d),因此西北太平洋是大气CH4和N2O的净源。

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期刊信息
  • 《海洋与湖沼》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国海洋湖沼学会
  • 主编：孙松
  • 地址：青岛市南海路7号中科院海洋所内
  • 邮编：266071
  • 邮箱：
  • 电话：0532-82898753
  • 国际标准刊号：ISSN：0029-814X
  • 国内统一刊号：ISSN：37-1149/P
  • 邮发代号:2-421
  • 获奖情况:
  • 2000年中国科学院优秀期刊一等奖,2000年山东省科委、新闻出版黑署评估优秀级,中国期刊方阵“双百”期刊
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  • 被引量:21021