2006年西南大西洋鱿钓渔场与表温和海面高度距平值的关系

Fishing ground of squid specially related with sea surface temperature and sea surface height anomaly in southwest Atlantic in 2006

根据2006年1-6月中国鱿钓船在西南大西洋的生产统计和表面水温（SST）、海面高度距平值（SSHA）的资料，利用海洋地理信息系统软件Marine explorer 4．0绘制了各月产量、日产量与SST和SSHA的关系图，推测出各月渔场的最适SST和SSHA值，并经K-S检验。结果表明：1—3月中心渔场主要分布在45°S、60°W附近海域，各月最适SST分别为11～12℃、12～13℃、12～13℃；4-6月中心渔场主要分布在42°S、58°W附近海域，各月最适SST分别为11～13℃、9～11℃、8～9℃。中心渔场主要分布在SSHA=0附近海域。中心渔场分布与SST和SSHA关系极为密切，可作为渔情分析指标。

It is significant to study the spatio - temporal distribution of fishing ground of squid lUex argentinus as an important target species in Chinese squid jigging fishery and the relationship between the fishing ground of the squid with sea surface temperature （SST） and sea surface height anomaly （SSHA）, which can provide the guideline for the commercial fishing. The monthly production and CPUE related with SST and SSHA with the format of 1 latitude by 1 longitude were analyzed based on the catch data from Chinese squid jigging vessels in the southwest Atlantic from January to June in 2006 and environment factors （ SST and SSHA） by using the software Marine explorer 4.0. The results indicated that the catch mainly concentrated in the waters near 45° S and 60° W from January to March, and the favorite SSTs were 11 -12 ℃, 12-13 ℃ and 12- 13 ℃ respectively. From April to June, the catch was mainly found in the waters near 42° S and 58°W, and the favorite SSTs were 11 - 13 ℃, 9 - 11℃ and 8 -9℃ respectively. The above results were verified by K- S test. The fishing ground was mainly distributed in the area where the value of SSHA was equal to or near zero. From the results above, SST and SSHA were closely related to the distribution of the main fishing ground, and used as the indicator for fishing ground searching.