QQ客服 官方微博 反馈留言

	2009年春季东海的生物固氮速率; Biological N_2 fixation rates in the East China Sea in spring 2009
	林峰 ; 陈敏 ; 杨伟锋 ; 张润 ; 郑敏芳 ; 邱雨生 ; 童金炉 ; 林志裕 ; 张馨星
	2013-11-15
关键词	海洋化学 15N2示踪 生物固氮速率 氮收支 东海 春季 marine chemistry 15N 2 tracer biological N 2 fixation rate nitrogen budget the East China Sea spring
英文摘要	2009年4~5月间,应用15n2示踪法实测了东海25个站位的生物固氮速率,结合温度、盐度等要素的分布,分析生物固氮速率的空间变化及其影响因素.结果表明,春季东海的生物固氮速率介于102~16 349 nMOl/(M3·d)之间,平均为2 441 nMOl/(M3·d).生物固氮速率的空间变化呈现径流影响区最高,黑潮影响区与陆架其他区域相近的特点,径流影响区的平均生物固氮速率约为黑潮影响区和陆架其他区域的2倍,这可能与固氮生物种类的空间变化有关.春季东海的积分固氮速率平均为129μMOl/(M2·d),结合此前获得的夏、秋、冬季的积分固氮速率,估算出东海生物固氮速率的年均值为50μMOl/(M2·d),因而东海的年固氮通量估计为1.4x1010MOl/A,约占全球海洋年固氮通量的0.15%.对东海进行的氮源汇分析表明,生物固氮作用、长江径流输入和大气沉降输入等氮输入通量分别为1.4x1010、7.9x1010和3.9x1010MOl/A,反硝化作用和沉积物颗粒氮埋藏的迁出通量分别为9.5x1010和3.7x1010MOl/A,东海氮的源汇通量均为13.2x1010MOl/A,表明东海氮的收支基本处于平衡状态.; Biological N2fixation rates at 26 stations in the East China Sea were measured with15N2tracer assay during April and May 2009.Combined with temperature and salinity,the distribution of N2fixation rates and their influencing factors were discussed.Our results showed that the N2fixation rates ranged from 102 to 16 349 nmol/(m3·d) with an average of 2 441 nmol/(m3·d).The highest rates were observed in regions influenced by the river plume,which was about two times what observed in regions influenced by the Kuroshio current and the shelf waters,probably reflecting the spatial variation of the nitrogen fixers.The integrated N2fixation rate in the East China Sea in spring was129 μmol/(m2·d) in average,and the annual N2fixation rate was estimated as 50 μmol/(m2·d) compared with previous data in summer,autumn and winter.This meant that the new nitrogen flux supply by N2fixation to the East China Sea was 1.4×1010mol/a,contributing to about 0.15% of the N2fixation flux in global oceans.The nitrogen budget in the East China Sea was evaluated in views of sources and sinks.The fluxes of nitrogen supply to the East China Sea via the nitrogen fixation,the river runoff and the atmospheric deposition were estimated as 1.4×1010,7.9 ×1010and 3.9×1010mol/a,respectively.The removal fluxes of nitrogen via denitrification and sedimentary burial were 9.5×1010and 3.7×1010mol/a,respectively.Both the nitrogen flux of the sources and the sinks were 13.2×1010mol/a,indicating a balance of nitrogen budget in the East China Sea.; 国家自然科学基金杰出青年基金资助项目(41125020); 国家海洋局大洋专项资助项目(DY125-13-E-01)
语种	zh_CN
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/104550]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	林峰,陈敏,杨伟锋,等. 2009年春季东海的生物固氮速率, Biological N_2 fixation rates in the East China Sea in spring 2009[J],2013.
APA	林峰.,陈敏.,杨伟锋.,张润.,郑敏芳.,...&张馨星.(2013).2009年春季东海的生物固氮速率..
MLA	林峰,et al."2009年春季东海的生物固氮速率".(2013).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。