海滨盐沼是在潮汐影响下生长耐盐喜水的草本植物的滨海湿地环境。在不同的气候和海水盐度条件下,其植物的种类不同;而不同的植物种类和不同的海岸动力状况,又使植物的生长下限位置不同。海滨盐沼是自然界中生产力最高的生态系统之一^[1]。对海滨盐沼的研究将为海岸带资源的合理开发利用及古代油、气、泥炭等矿产的形成提供理论依据(采样断面见图1)。

Based on the analysis of samples collected from the coast of north Jiangsu Province and Shanghai from July to November 1985, the characteristics of the sediments both in salt marshes and ncarby bare flats are discussed. From sea to shore, the characteristics are as follows:1.Usually, mean grain size becomes small and the standard deviation becomes big except in erodent coast, and the coast where vegetation density becomes rare towards the bank. 2.Salinity and the content of organic matter get greater, while pH value gets smaller. 3.The content of heavy minerals increasc mainly because of the increase of mica. 4.The content of spore-pollen increases.In, salt marshes, pollen of herbs is domenant, 5.The number of Foraminifera decreases.