摘要
以2008年夏季对35°N断面的调查资料为依据,分析了在浒苔消亡末期该断面颗粒有机碳(POC)和颗粒有机氮(PON)的分布特征和变化趋势,并结合2006年同期该断面的调查数据分析了浒苔爆发对该断面颗粒有机物含量和分布的影响。结果表明:在浒苔消亡末期,该断面的POC和PON的分布趋势基本一致,都呈现出近岸高、远岸低,表层高、底层低的分布特征,在垂直分布上与2006年同期的分布趋势恰好相反,这可能是受浒苔消亡产生的大量生物碎屑影响,相比之下底部由于黄海冷水团的垂直环流导致的沉积物再悬浮的作用不是很显著。颗粒物中的C/N出现了罕见的高值,可能是由于碎屑中的含N基团比C骨架降解容易得多所致。
The distribution and changes of particulate organic carbon（POC） and particulate organic nitrogen（PON） in the end of the decline of Enteromorpha prolifera were studied in summer of 2008.Compared with the data in summer 2006,the effect of Enteromorpha prolifera on the distribution of POC and PON was discussed.The results show that the concentrations of POC were strongly correlated with PON.The concentration of POC and PON was higher in shore and lower off shore and it was higher in surface than bottom.The vertical distribution trend was just the reverse in 2006.It might be affected by amount of the degradation products of Enteromorpha prolifera.The influence of sediment re suspension induced by the vertical circumfluence in Yellow Sea Cold Mass was not remarkable.Such a high value of C/N in particulate was infrequent.It was due to that nitrogen containing group is easier to degrade than carbon skeleton.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2010年第6期804-807,814,共5页
Marine Environmental Science
基金
国家重点基础研究发展计划(973)(2005CB422305)
我国主要河口及邻近海域环境质量评价(908-02-02-02)
关键词
POC
PON
浒苔
消亡期
POC； PON； Enteromorpha prolifera； decline
