【摘要】 <正> 东山湾位于福建省的南部,即23°40′—23°57′N;117°25′—117°37′E。湾内水深介于0—31米之间(经潮流订正)。湾的西北面有漳江河水流入,年径流量约为4.675亿立方米。由于河水带入大量的有机质和营养物质,使沉积物中有机碳和全氮的丰度较大。有关东山湾沉积地球化学的研究,目前报道不多。我们于1982年采集了表层沉积物样品52个(图1),分析了其有机碳、碳酸盐、全氮和可溶性硅酸盐的含量,探讨了各要素的主要分布特征,初步讨论了它们之间以及它们与粒径和沉积类型的关系。更多还原

【Abstract】 The Contents of organic carbon, total nitrogen, soluble silicate and carbonate in the surface sediments of about 52 samples from the Dongshan Bay havn been analysed. The values of organic carbon lie between 0.37 to 1.44%, with a mean of 0.83%; the total nitrogen 34.6 to 128.7mg/100g, with a mean of 78.8mg/100g; and the soluble silicate 0.81 to 2.98 mg/g, with a mean of 1.80mg/g; and the carbonate 0.6 to 19.4%.Some characteristics of the distribution have been Studies. Similar are the content distributions of organic carbon, total nitrogen and soluble silicate, and the relationship between the organic carbon and total nitrogen oppears obviously positive, and the organic carbon to soluble silicate appears positive.The C/N value is high at the inner bay and gradually reduces towards the bay mouth, forming the characteristics of distribution in the transition from the terrestrial facies to marine facies.The correlations among essential elements granularity and sedimentation types have also been discused.更多还原