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本文以１９８６年冬季（１月）和夏季（７月）两个航次调查资料。研究了长江口及其毗邻海域的枯丰水期的数百个海水悬浮物样品的成分和分布。悬浮颗粒物浓度变化范围，河口区，夏季为１３４．０～１８９．０ｍｇ／ｄｍ３、冬季为７１．６～２９９．０ｍｇ／ｄｍ３；而海区，冬季为６．９～１２５．５ｍｇ／ｄｍ３，夏季为３．７～７２．２ｍｇ／ｄｍ３；呈现在盐度５～２５时．水域深处地区存在着最大浑浊带，它的优势成分是矿物微粒，次为生物源颗粒硅藻。同时亦对悬浮物质的时空分布的控制因素进行了讨论。
In this paper, the 1986 winter (January) and summer (July) two voyage survey data. The composition and distribution of hundreds of samples of seawater suspended matter in the dry season of the Changjiang Estuary and adjacent waters were studied. In the estuarine zone, the concentrations of suspended particulates ranged from 134.0 to 189.0 mg / dm3 in summer and from 71.6 to 299.0 mg / dm3 in winter, while from 6.9 to 125.5 mg / dm3 in winter and from 3.7 ~ 72.2mg / dm3; presented at salinity 5 ~ 25. The most turbid zone exists in the depths of the water area, and its dominant component is mineral particles, followed by biogenic particulate diatoms. At the same time, the controlling factors of the spatiotemporal distribution of suspended matter are also discussed.