Pacific Ocean European flying squid resource complimentary quantity prediction method and application

Abstract

The invention discloses a Pacific Ocean European flying squid resource complimentary quantity prediction method and application. The Pacific Ocean European flying squid resource complimentary quantity prediction method comprises steps of counting SST data of a sea area during a range of 125 degree-140 degree E, 25 degree to 40 degree N from 1997-2009, counting chl a concentration data of the sea area during a range of 125 degree-140 degree E, 25 degree-40 degree N from 1997 to 2009, counting CPUE of the Pacific Ocean European flying squid population from 1998 to 2010, counting an area of a sea area during a range of 125 degree-140 degree E, 25 degree-40 degree N from October to December, wherein the sea surface temperature in the sea area is from 15 DEG to 20 DEG and then calculating PS; obtaining a point of a time sequence of the CPUE, wherein the point has a highest correlation degree with the SST, chl a concentration data and the time sequence of the PS value; performing multi-linear regression analysis; using BP nerve network model prediction; and obtaining the CPUE prediction value of the Pacific Ocean European flying squid and calculating prediction accuracy.

Description

technical field [0001] The invention relates to a method for forecasting fishing conditions, in particular to a method for predicting the resource replenishment of autumn-born group of Pacific pleura squid with the range of spawning grounds at 125°-140°E and 25°-40°N. Background technique [0002] Todarodes pacificus, also known as Japanese squid, oriental squid, is a kind of oceanic economic squid, mainly distributed in the 21°-50°N waters of the Northwest Pacific Ocean, namely the Sea of ​​Japan, the Pacific coast of Japan, and the Yellow Sea of ​​China. ,East my country Sea. There are three main seasonal spawning groups of Pacific puffer squid, namely summer group, autumn group and winter group. At present, the main fishing groups are autumn group and winter group. The current main fishing area of ​​the Qiusheng group is the Sea of ​​Japan, and the catches in Japan and South Korea are relatively high. Its main spawning areas are the East China Sea and the Tsushima Strai...

AI Technical Summary

Problems solved by technology

[0008] At present, most of the forecast methods for a certain fishery species use multivariate statistical methods and habitat index methods, but the prediction results often have certain deviations from the actual situation.

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