Carbon, Nitrogen Geochemical Character and Source Analyses in Yangtze River Estuarine Sediments

详细信息   

• 责任者：Wu Dandan (Key Laboratory of Coast and Island Development ; MOE ; Nanjing University ; Nanjing 210093 ; China) ; Ge Chendong
• 刊名：Geochimica
• 出版年：2012
• 卷期：41(3)
• 关键词：海洋沉积物 ; marine sediments ; 碳 ; carbon ; 氮 ; nitrogen ; 有机化合物 ; organic compounds ; 长江口 ; Yangtze River Mouth
• 页码：p.207-215
• 图表：4 illus., 38 refs.
• 分类号：0200
• issnNo：ISSN0379-1726
• isbnNo：CN44-1398/P

摘要

Two cores, CJ16 and CJ19, were collected from upper subaqueous delta and river mouth shoal in the Yangtze River estuary, respectively. Grain size, total organic carbon （TOC）, total nitrogen （TN） and carbon isotope （δ¹³C） values were measured to obtain the downward variations and to trace the change of organic matter sources in the two cores. The result indicates that sedimentary records at different parts of the Yangtze River Delta show discrepancy and this discrepancy is not just naturally influenced by the marine and terrigenous contribution of the organic matter, but also influenced by human activities, such as the colonization of Spartina alterniflora.