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为了定量地分析不同温升梯度的温排水对浮游植物的影响,采用FVCOM三维水动力模型计算2011年夏季大小潮、涨落潮时期不同温升梯度温排水的分布特征、影响面积和体积,并根据2011年夏季在象山港海域进行的海上围隔实验数据,分析不同梯度温升范围内浮游植物优势种琼氏圆筛藻的损失量。研究结果表明,夏季表层温排水扩散范围主要分布于1.5℃温升包络线内,底层主要分布于1℃温升包络线内。弱温升区和强温升区内温排水影响海水体积分别为93.650×106 m3及1.073×106 m3,总计94.723×106 m3。温排水影响范围内琼氏圆筛藻的总损失量为3.258×1013 cells,弱温升区占94.76%,强温升只占5.24%。
In order to quantitatively analyze the influence of warm drainage of different temperature gradient on phytoplankton, FVCOM three-dimensional hydrodynamic model was used to calculate the distribution characteristics of temperature and temperature gradient in summer and the tide of summer 2011, According to the experimental data of sea enclosure in the sea area of Xiangshan Harbor in the summer of 2011, the loss of phytoplankton dominate species in the range of temperature gradient was analyzed. The results show that the diffusion range of surface temperature in summer is mainly distributed in the 1.5 ℃ temperature rise envelope, and the bottom is mainly distributed in the 1 ℃ temperature rise envelope. The volume of seawater influenced by temperature and temperature in the area with weak temperature rise and high temperature rise area is 93.650 × 106 m3 and 1.073 × 106 m3 respectively, amounting to 94.723 × 106 m3. In the area affected by warm drainage, the total amount of loss was 3.258 × 1013 cells, the area with weak temperature rising accounted for 94.76% and the area with strong temperature rising only accounting for 5.24%.