针对绿潮（大型绿藻藻华）灾害在近海海域频频暴发，严重影响了生态环境和水体营养盐循环等问题，以典型的滨海湿地和绿潮生物的代表种类刚毛藻（Cladophora sp.）为研究对象，通过室内模拟、野外采样监测与原位围隔相结合的试验方法，在沉积物-水体-海藻体系下研究藻类生长对水体和沉积物中磷迁移转化的影响，检测藻类生长和衰亡时期水土界面微环境的变化，明确三相模式下沉积物磷的释放规律及主控因子，阐明绿潮暴发和消亡对沉积物磷释放的影响程度及其机理。本项目研究将有助于深入阐释大型藻类对水土界面磷迁移转化的影响机制，可为滨海湿地磷内源污染的控制以及绿潮灾害的防治提供科学依据。

Green tides (macroalgal blooms) have occurred frequently in coastal regions in recent years, which seriously affects the ecological environment and nutrient cycle in marine water. According to the fact, the typical coastal wetland and green filamentous algae Cladophora sp. (a prevalent specie of green tieds) are studied with the indoor simulation method combining the field observation and in situ enclosure. The influence of macroalgae growth on phosphorus (P) exchange at sediment-water interface is analyzed in water-sediment-macroalgae system. In addition, some environmental parameters at the interface are investigated during the macroalgae production and decomposition process. The aims of this study are to definite P release mechanism from the sediments and the primary influence factors in three-phase system, and to clarify the influence mechanism of the occurrence and degradation of green tides on sediment P release. The results are helpful to further elucidate the influence mechanism of green filamentous algae on P transference between the sediment and overlying water, which also can provide scientific basis for the control of internal P pollution and the prevention of harmful green tides in coastal wetlands.