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根据文献资料分析了辐射、温度、透明度和营养盐浓度等影响渤海初级生产力的主要理化因素 ,定量给出了它们的相关程度。这些因子与初级生产力之间的线性相关系数约为 0 .5～ 0 .8,且以透明度与初级生产力的相关性最好。然后利用一个简单的海洋生态系统动力学模式 ,进一步讨论了物理和化学强迫对渤海初级生产力的影响。物理和化学环境的改变不仅能影响初级生产力的大小 ,也决定了其时间变化特征。
According to the literature, the main physical and chemical factors affecting the primary productivity of the Bohai Sea, such as radiation, temperature, transparency and nutrient concentration, were analyzed and their correlations were given quantitatively. The linear correlation coefficient between these factors and primary productivity is about 0.5 to 0.8, and the correlation between transparency and primary productivity is the best. A simple model of marine ecosystem dynamics is then used to further discuss the effects of physical and chemical forcing on primary productivity in the Bohai Sea. Changes in the physical and chemical environment can affect not only the size of primary productivity but also its temporal variation.