台湾海峡南部鱼类生态类群及渔业生产特点

THE ECOLOGICAL TYPES OF FISHES AND FISHERY CHARACTERISTICS IN THE SOUTHERN PART OF TAIWAN STRAIT

台湾海峡南部已知有671种以上鱼类。尽管高产量的鱼种不多,但多数种类均具有经济价值,在渔业上占有一定比重。鱼类生态属性不同,其渔场、渔期和渔法各异。深入分析这些鱼类生态特点,采取相应渔法,综合经营,合理利用,促进渔业生产的发展,具有现实意义。一、台湾海峡南部海洋环境特点台湾海峡南部地处热带亚热带,冬季2月表层水温平均在15℃以上,表层20℃等温线位于海区的南侧。黑潮支流和南海暖流经过本海区北上。近海一带受沿岸水的影响,台湾浅滩东南侧有涌升流存在。随季节不同,这些水系势力的消长及影响范围有所变动。除海区东南部终年为这两支暖流所盘踞外,春夏季也控制了整个海区北部。

Oceanic environment of the southern part of Taiwan Strait is complicated,there are a great many species and ecological types of fishes,and therefore there are different kinds of catchable population,obvious seasonal species of fishes are changed alternately,duration of fishing is long,different habitat is adapted to different ecological type,independence of fishing ground is more apparent and there are some of commercial fish species in each ecological stock.Only if administration of fishery is better run and fishing operations are developed,the production of fishery will be raised to a higher level.