Application of GIS in the jack mackerel yield data analysis

With the development of offshore fishing techniques, fishing intensity increased gradually. The fishery centers of tuna, squid, jack mackerel and other economic fish species are changing rapidly. In order to grasp the fishery center of time and space, and learn the latest changes in fishery resources, in this study, the Chilean jack mackerel yield data is as an example to analyze. Equal space grid, Equal time interval, equal distance range, and other spatial analysis methods are used to analyze. There are some results are obtained, such as the position of fishery center, temporal and spatial distribution of CPUE, comparing the efficiency of fishing boats and other information.