Resource complementary quantity prediction method of Peru squid

Abstract

The invention provides a resource complementary quantity prediction method of Peru squid. The resource complementary quantity prediction method is characterized in that by use of correlation between a time sequence value formed by marine environment factors of a feeding ground in feeding months and a CPUE time sequence of this year and selecting marine environment factors of a sea area with high correlation as correlation factors of influence on complementary quantity of squid resources by a feeding habitat environment; by use of correlation between a time sequence value formed by marine environment factors of an oviposition month and an oviposition field and a CPUE time sequence of next year, selecting marine environment factors of a sea area with high correlation as correlation factors of influence on complementary quantity of squid resources by an oviposition habitat environment; by use of the proportion of suitable surface water temperature scope of oviposition months and oviposition fields to total area and the proportion of suitable surface water temperature scope of feeding months and feeding fields to total area, using P<s> and P<f> to represent the oviposition field inhabit environment suitable degree and the feeding field inhabit environment suitable degree respectively; and using a selected environment factor and different combinations of the P<s> and P<f>, establishing BP network structure prediction models, and selecting an optimal model. The resource complementary quantity prediction method is used for medium and long term fishery forecast.

Description

technical field [0001] The invention relates to a method for mid- and long-term forecasting of fishery conditions, in particular to a method for forecasting Peruvian squid resource replenishment. Background technique [0002] Forecasting of resource replenishment is a kind of medium and long-term forecast of fishery situation. Accurate forecasting of resource replenishment is the key to scientific management and rational development of fishery. The pelagic economic catfish is a species with a short life cycle. Although it has a strong self-regulation ability, it can respond to changes in the marine environment in a short period of time and quickly adapt to such changes. The impact of resource replenishment is still significant. Existing studies have shown that environmental factors are the most important factor affecting the replenishment of pelagic catfish resources. Therefore, the current forecast research on its resource replenishment is also based on this. However, th...

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Problems solved by technology

However, the environmental factors selected in previous studies are relatively single, and the forecast models established are also simple linear models.

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