STUDY ON THE VARIATIONS OF CATCH OF ANCHOVY AND SAURY DUE TO OCEANIC CLIMATE CHANGE IN THE KOREAN SEAS BY USING RS/GIS

摘要

The variations of catch of anchovy and saury due to oceanic climate change in the Korean Seas were studied. This study area was 31°~38° N and 124°-132° E. And data (seawater temperature, salinity, dissolved oxygen) is used from National Fisheries Research and Development Institute (NFRDI) and satellite images (NOAA/AVHRR) during 2000 to 2009. The spatial characteristics are analyzed by Geographic Information System (GIS). The results showed that the average of seawater temperature in the depth of 20m increased 1.45 in the South Sea and 0.83 in the East Sea. The maximal catch of anchovy was highest in summer (July-September) and winter (December~March), respectively, in compared with spring (April-June). Catch of anchovy has increased since 2000. The maximal catch of saury was highest in spring (May~June), in compared with spring (August-September). The increment of seawater temperature contributed to increase the catch of anchovy, but catch of saury was decrease in the same times.