其他题名Seasonal variations and sources of carbon and nitrogen isotopes in suspended particulate matter in inflow rivers of the Bohai Sea and the North Yellow Sea
于靖; 张华
发表期刊海洋科学
ISSN1000-3096
2017-05-15
卷号41期号:5页码:93-102
关键词suspended particulate matterstable organic carbon isotopicstable nitrogen isotopicseasonal variationssources悬浮颗粒物碳稳定同位素氮稳定同位素季节性特征源解析
DOIDOI: 10.11759/hykx20160914003
产权排序(1) 中国科学院烟台海岸带研究所; (2) 中国科学院大学
作者部门海岸带环境过程实验室
英文摘要Samples of total suspended particulate matter(TSM)from inflow rivers of the Bohai Sea and the North Yellow Sea over different seasons were collected and analyzed for concentrations of total organic carbon(POC), total nitrogen(PN), and stable isotopic composition(delta~(13)C and delta~(15)N). These isotopic compositions were used for identifying the sources of organic carbon and nitrogen in suspended particulate matter. The results showed that the seasonal variation of delta~(13)C and delta~(15)N in TSM were delta~(13)C_(medium flow)>delta~(13)C_(high flow)>delta~(13)C_(low flow) and delta~(15)N_(high flow)>delta~(15)N_(medium flow)> delta~(15)N_(low flow), respectively. The sources of total suspended particulate organic matter suggested obvious seasonal variations in river inflows. The C3 plant, soil organic matter, and macrophyte were the main mixture sources of organic matter during medium flow(spring and autumn). The contribution of phytoplankton increased during high flow(summer). The suspended organic matter was derived mainly from mixture sources of C3 plant debris and autochthonous organic matter during low flow(winter); sources of suspended particulate nitrogen mainly included seasonal precipitation, municipal sewage, fertilizer, and autochthonous macrophyte.
中文摘要选择流入渤海和北黄海的36条主要河流为研究对象,对比了平水期、丰水期和枯水期水体中悬浮颗粒物和河流表层沉积物的碳和氮稳定同位素的地球化学特征,并对颗粒物有机质碳和氮来源进行分析。结果表明,水体悬浮有机质碳同位素总体上表现为delta~(13)C_(平水期)>delta~(13)C_(丰水期)>delta~(13)C_(枯水期)的特点, delta~(15)N值呈delta~(15)N_(丰水期)>delta~(15)N_(平水期)>delta~(15)N_(枯水期)的特点。渤海和北黄海的主要入海河流悬浮颗粒物有机质的来源具有明显的季节性差异,悬浮颗粒有机质碳平水期(春秋季)来源以C3植物、土壤有机质和水生藻类为主,丰水期(夏季)碳的各来源中浮游植物的贡献率明显增大,枯水期(冬季)则表现为陆源C3植物分解和水源性有机质的混合来源;悬浮颗粒态氮的来源与季节性降水量、生活污水、合成化肥及河流内源性水生植物密切相关。
文章类型Article
收录类别CSCD
语种中文
关键词[WOS]Environmental Sciences & Ecology
研究领域[WOS]Environmental Sciences & Ecology; 环境科学与生态学
CSCD记录号CSCD:6058834
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/24251
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
中科院海岸带环境过程与生态修复重点实验室_污染过程与控制实验室
作者单位1.中国科学院烟台海岸带研究所;
2.中国科学院大学
推荐引用方式
GB/T 7714于靖,张华. 渤海及北黄海河流悬浮颗粒碳氮同位素时空分布及源解析[J]. 海洋科学,2017,41(5):93-102.
APA于靖,&张华.(2017).渤海及北黄海河流悬浮颗粒碳氮同位素时空分布及源解析.海洋科学,41(5),93-102.
MLA于靖,et al."渤海及北黄海河流悬浮颗粒碳氮同位素时空分布及源解析".海洋科学 41.5(2017):93-102.
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