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潮汐盐沼是海洋边缘海环境的最边缘部分，是海陆过渡的真正边界。盐沼环境因素具明显的垂直分带性，各环境参数变化是典型的海洋或陆地不可相比的，盐沼坡度平缓，由海向陆的环境变化在这里分异清楚；沉积中垂向变化平面上得到极大的放大等。据国外研究，盐沼环境控制着有孔虫的特征和分布，利用盐沼有孔虫的垂直分带恢复古海平面变化，精确到±２０ｃｍ，甚至±５ｃｍ，这在海面变化、环境演变、全球变化研究上有重要意义
The tidal salinas are the most marginal part of the maritime marginal sea and the true boundary between land and sea. The environmental factors of salina have obvious vertical zonation. The changes of environmental parameters are typical of the ocean or land. The salinities of the salina are gentle, and the environmental changes from sea to land are clearly distinguished here. Vertical changes in the sediments Get magnified on the plane and so on. According to foreign studies, the salt marsh environment controls the characteristics and distribution of foraminifera, the use of the vertical zonation of boreal foraminifera restore the ancient sea level change, accurate to ± 20cm, or even ± 5cm, which changes in the sea, environmental evolution, global Research on change is important