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红海湾表层沉积物中Zn，Cd，Cu，Pb含量呈湾顶高于湾中部和湾口的分布特征，在河口潮间带形成污染区。根据背景区沉积物重金属平均含量和2倍标准差，提出用红海湾表层沉积物中Zn，Cd，Cu，Pb，Ni，Cr的背景上限（分别为90，0.65，20，55，30，45mg·kg~-1干重）作为背景参考值。红海湾表层沉积物中Zn，Cd，Cu，Pb呈显著的正相关关系，推测四者具有相似的来源。
The contents of Zn, Cd, Cu and Pb in the surface sediments of the Red Sea Bay were higher than those in the middle of the bay and the mouth of the bay, forming a polluted area in the estuary intertidal zone. According to the average content of heavy metals in sediments and the standard deviation of two times, the upper limit of background of Zn, Cd, Cu, Pb, Ni and Cr in surface sediments of Red Bay was proposed (90,0.65,20,55,30,45mg Kg -1 dry weight) as a background reference value. Zn, Cd, Cu and Pb in the surface sediments of the Red Bay were positively correlated, suggesting that all four had similar sources.