闽南-台湾浅滩渔场地形及水深与中上层鱼类群聚分布的关系

根据闽南－台湾浅滩渔场灯光围网信息船1989－1999年的渔捞纪录，研究闽南－台湾浅滩渔场海底地形，水深与中上鱼类群聚的关系。结果表明，渔场地形起伏，水深变化大，中上层鱼类分布较为密集，但各渔区间的分布不均匀，南北方向上渔获产量分布是由北向南递增，东西方向上渔获产量分布是由浅滩两侧向浅滩的南，北中部靠拢；中上层鱼类主要分布在海峡南部混合水和海峡暖水区，其中心渔场位于上升流终年存在的高盐区，同时群聚于海底断裂区和海底隆起边缘区；中上层鱼类群聚区或中心渔场随海峡南部混合水和海峡暖水的季节变化而变化，不仅与渔场地形，水深有关，还与影响海区季风的风向，风力和不同水系强弱有关；本渔场中上层鱼类在不同季节群聚水深，春，夏季为30－60m，秋，冬季为40－80m。

Effects of submarine topography and water depth on distribution of pelagic fish community in Minnan-Taiwan bank fishing ground

According to the fishing record of the light-seine information vessel in Minnan-Taiwan bank ground during 1989 to 1999, the effects of submarine topography and water depth on distribution of pelagic fish community in Minnan-Taiwan bank fishing ground was studied. The results showed that the pelagic fish distributed concentratively, while the submarine topography and water depth varied widely, but in different fishing regions, the distribution of pelagic fishes was uneven. The distribution of fishing yield increased from north to south, and closed up from sides of the bank to south or north in the regions. Pelagic fish distributed mainly in mixed water in the southern Taiwan Strait, and in warm water in the Taiwan Strait. The central fishing grounds were at high salt regions. Close gathering regions of pelagic fish or central fishing ground would be varied with the seasonal variation of mixed water in the southern Taiwan Strait and warm water in the Taiwan Strait. Central fishing ground was not only related to submarine topography and water depth, but also related to wind direction, wind-power and various water systems. In the fishing ground, the gathering depth of pelagic fish was 30-60 m in spring and summer, and 40-80 m in autumn and winter.