A method for forecasting the fishing situation of Symplectoteuthis australis in the South China Sea

Abstract

The invention provides a method for forecasting the fishing situation of Symplectoteuthis australis in the South China Sea, which comprises the following steps: different points are selected in the sea area where the fishery situation prediction of Symplectoteuthis australis needs to be carried out, and environmental factors affecting the habitat quality of Symplectoteuthis australis at corresponding positions are obtained; the environment factors affecting the habitat quality of Symplectoteuthis australis are analyzed; according to the model of different seasons and different environmental factors and adaptability index, the adaptability index of the selected point position is obtained; according to the model of habitat adaptability index and seasonal adaptability index, the habitat adaptability index of selected sites is obtained; the habitat adaptability index distribution map of Symplectoteuthis ulna is obtained by image processing of habitat adaptability index corresponding to theselected points in the fishery forecasting sea area, and the range of Symplectoteuthis ulna fishery could be predicted. The method of the invention can make short-term prediction of the fishery situation of the South China Sea kite squid and reflect the habitat change of the cephalopod resources in a short time, and the accuracy rates of forecasting the fishery situation of the South China Sea kite squid in different seasons are 83%, 86%, 88% and 90%, respectively.

Description

technical field [0001] The invention belongs to the technical field of marine fishery situation forecasting, and in particular relates to a method for forecasting the fishing situation of kite squid in the South China Sea. Background technique [0002] The South China Sea is rich in fishery resources, among which the kite squid has huge resources and is the fishery resource with the most potential for development in the South China Sea. The annual catch can exceed 2 million tons, with high economic value and great development potential. At the same time, kite squid belongs to cephalopod resources. Cephalopods are annual species with a short life cycle and are sensitive to changes in the marine environment. Changes in their habitat environment directly affect their distribution and production. The distribution of the kite squid provided the basis. Preliminary fishing forecast and exploration of cephalopod resources in the South China Sea, mastering the habitat environment of...

AI Technical Summary

Problems solved by technology

[0003] Among the existing marine fishery forecast methods, most methods only focus on one or a few factors that affect the fishery situation, the number of factors is small, and the accuracy of the model is insufficient; or the data used has a large time span, usually by quarter or year Analysis, which belongs to the medium and long-term forecast, cannot reflect the habitat changes of cephalopod resources in a short period of time

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