In additional, the maps of total catch distributions of Atlantic tuna long-line fishing were also ploted by using GIS software and tuna catch database which was established by FAO, and the spatial distribution of tuna were analyzed.

• 此外,还根据FAO建立的金枪鱼生产数据库,采用CIS软件制作了大四洋金枪鱼延绳钓主要渔获种类捕捞产量的地理空间分布图,并分析了其资源的空间分布特征。