Medium and long-term prediction of saury resource abundance based on pacific oscillation index

The invention discloses a mid-long-term prediction method of saury resource abundance based on Pacific oscillation index, which comprises the following steps: monthly Pacific oscillation index PDO value of the northwest Pacific area is acquired where the saury is distributed in the previous N years; the time series analysis method is adopted, the correlation between the abundance of saury resources CPUE and the monthly PDO value of the previous N years is analyzed, and the monthly PDO value of P < 0.05 is obtained. The monthly PDO value was used as the climatic factor affecting the abundance of saury resources. The results showed that the abundance of saury resources CPUE is correlated with the monthly PDO value. Multivariate linear equation is used to establish several abundance prediction models of saury resource and to calculate P value statistically. Among the models mentioned above, the model with the smallest P value is selected as the optimal model. 本发明公开了种基于太平洋涛动指数的秋刀鱼资源丰度中长期预测方法，其包括以下步骤：获取前N年秋刀鱼分布的西北