Northwest Pacific Ocean ommastrephidae bartramii winter-spring stock colony abundance prediction method based on gray system
A technology for gray system and abundance prediction, applied in prediction, instrumentation, climate change adaptation, etc., can solve problems such as long-term series
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[0013] The method for predicting the abundance of Northwest Pacific squid in winter and spring based on the gray system adopts the production statistical data and spawning ground environmental data of Northwest Pacific squid, and is characterized in that it includes the following steps:
[0014] (1) Obtain four marine environment and climate factors including nino3.4 anomaly, PDO data, sea surface temperature SST and chlorophyll concentration chl-a through remote sensing satellites;
[0015] (2) Carry out gray correlation analysis on the four marine environment and climate factors, that is, take the CPUE of the year as the parent sequence, and use the spawning ground environmental indicators and climate indicators corresponding to each month during the spawning time of the year as the subsequences to calculate respectively The gray absolute correlation degree between each subsequence and the parent sequence is used to evaluate the importance of each index through the size of th...
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