河口“浑浊带”(Turbidity maximum),又称“最大浑浊带”,“最大浊度带”,“大含沙量区”等,是广泛存在于河口的一种动力沉积表征。它的主要特征是含沙量明显高于上游和下游地区,而且在不同的水文条件下持续出现。河口浑浊带对河流泥沙向海的输移、对河口泥沙的淤积产生巨大影响,对各种化学元素(包括有害元素)具有过滤器的作用;在浑浊带内透光性弱,生物活动受到 The estuary Turbidity maximum, also known as “maximum turbidity zone”, “maximum turbidity zone” and “large sediment concentration zone”, is a dynamic sedimentary characterization widely found in estuaries. Its main feature is the sediment concentration is significantly higher than the upstream and downstream areas, but also in different hydrological conditions continued to appear. The estuarine muddy zone has a great influence on sediment transport to the sea, which has a great influence on sediment deposition in the estuary and has a filter effect on various chemical elements (including harmful elements). In the turbid zone, light transmissibility is weak and biological activity Received