Laboratory experiments using crushed pumice

Sedimentary oxygen demand laboratory experiment An incubation experiment using sediment cores was conducted to assess the effect of using crushed pumice as a sand-capping material to suppress sediment oxygen consumption. Sedimentary nutrient release rate laboratory experiment The sediment nutrient release experiment was conducted using the sediment cores, to assess the effect of using crushed pumice as a sand-capping material to suppress nutrients release from sediments. Nutrient adsorption experiment The artificial seawater in the beaker was continuously stirred during the experiment, and the crushed pumice was kept in suspension throughout the experiment. Nutrient concentrations were monitored to evaluate nutrient adsorption rates by crushed pumice. Exposure experiment Exposure experiments were conducted with crushed pumice in suspension to examine the effects of the resuspension of crushed pumice on bivalves.沉积物需氧量室内实验：本研究采用沉积物柱样开展培养实验，以评估碎浮石作为覆砂材料对沉积物耗氧过程的抑制效果。 沉积物营养盐释放速率室内实验：本研究采用沉积物柱样开展沉积物营养盐释放实验，以评估碎浮石作为覆砂材料对沉积物中营养盐向上覆水释放过程的抑制效果。 营养盐吸附实验：实验过程中持续搅拌烧杯内的人工海水，并使碎浮石始终处于悬浮状态；通过监测营养盐浓度变化，评估碎浮石对营养盐的吸附速率。 暴露实验：本研究开展悬浮态碎浮石暴露实验，以探究碎浮石再悬浮过程对双壳类生物的影响。