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建立了一个贝藻混养生态模型 ,并应用于桑沟湾栉孔扇贝、太平洋牡蛎和海带混养生态系统的模拟。这一模型在个体生长模型的基础上模拟种群的生长情况 ;通过模拟不同播苗养殖和收获方式下的产量 ,以及不同混养方式对海洋生态系统的影响来确定养殖容量。采用该模型的研究结果表明 :当养殖密度分别增加到目前扇贝和牡蛎放苗量的 2倍和 15倍时总产量最高 (达到养殖容量 ) ,但单位面积产量和产量 /播苗比减少 ,因此效益是下降的 ;扇贝放苗量增加到目前的 15倍 ,牡蛎增加到 30倍时会导致养殖生产崩溃 ,同时生态系统也发生改变 :在目前养殖密度下 ,桑沟湾向黄海输出初级生产产品 ,但是当放苗密度增加到 15～ 2 0倍时 ,桑沟湾需要黄海向其输入初级生产产品。上述结果表明 ,该模型可以迅速模拟养殖生物量和生态系统的变化 ,在多元养殖管理中可作为一种有效的管理工具
A polyculture ecology model was established and applied to the simulation of polyculture ecosystem of Zhikong scallop, Pacific oyster and kelp in Sangqiu bay. This model simulates the growth of the population on the basis of the individual growth model; determines the capacity of the cultivation by simulating the yield under different sowing and harvesting methods and the impact of different polyculture practices on the marine ecosystem. The results of this model showed that when the stocking density increased to 2 times and 15 times of the current scallop and oyster seedling respectively, the total yield was the highest (reached the breeding capacity), but the yield per unit area and the sowing rate of seedling decreased Benefit is declining; scallop Fang Miao increased to 15 times the current, 30 times the oyster will lead to the collapse of farming and production, while also changing ecosystems: the current density of farming, Sanggou Bay to export the primary production of the Yellow Sea to the Yellow Sea , But when the density of Fangmiao increased to 15 ~ 20 times, Sangqiu Bay needed Yellow Sea to import primary products to it. The above results show that this model can rapidly simulate the changes in the stock biomass and ecosystem, and can be used as an effective management tool in multivariate culture management