实际种群分析法(VPA)是渔业资源评估的经典模型之一，也是总允许捕捞配额(TAC)计算的主要模型之一。
Virtual population analysis (VPA) is one of the classic models in fish stock assessment, and is one of the main models in calculating the total allowable catch (TAC).
重要因子分析与关键因子分析相结合，有助于明确对种群动态产生实际作用控制因子及其作用强度。
It is very important for the dynamics of the insect with long longenity to analyse the important factors and key factors.
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