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苏北近海表层沉积物中碳酸钙分布特征的研究,是在苏北海岸带、海涂资源综合利用调查的基础上完成的。样品取自北起35°15′N,南至长江口以北,水深20米以浅的广大海区。调查区的面积约为3万平方公里,分析站位180个(图1)。 众所周知,苏北海岸带经受长江和古黄河的巨大影响。现代黄河的年输沙量约为13亿吨,是世界上输沙量最大的河流。长江源远流长,流域面积为196万平方公里,年平均输沙量为
The distribution characteristics of calcium carbonate in surface sediments of northern Jiangsu are based on the investigation of comprehensive utilization of coastal resources and sea-coated resources in northern Jiangsu. Samples taken from north 35 ° 15’N, south to the north of the mouth of the Yangtze River, water depth of 20 meters shallow sea. The survey area covers an area of about 30,000 square kilometers with 180 stations (Figure 1). It is well-known that the northern Jiangsu coast has been greatly affected by the Yangtze River and the ancient Yellow River. The annual sediment transport of the Yellow River is about 1.3 billion tons, making it the world’s largest river for sediment discharge. The Yangtze River has a long history, the drainage area of 1.96 million square kilometers, the average annual sediment transport capacity