| Summary: | 碩士 === 國立臺灣海洋大學 === 環境生物與漁業科學學系 === 101 === This study focused on the structure of water mass and the ship relation of temperature, salinity, nutrients, and Chl a in northern Taiwan. In this study, sampling and collecting CTD hydrographic was conducted from Fishery Research I in January (winter), April (spring), August (summer) and October (fall),2011. Analyzing the spatial and temporal distribution structure of different water masses in temperature-salinity, nutrients and chlorophyll a by using fuzzy classification method.
The results of the fuzzy classification method showed that the experiment all were winter, spring, summer and autumn of water mass structure could be divided into 4, 5, 3 and 6 types of water masse, the nutrients could be divided into 7, 4, 5 and 7 block types, and chlorophyll a could be divided into 5, 5, 3 and 4 block types,respectively. Meanwhile, the findings of the cross-classification analysis between various types of temperature and season with salt groups such as nutrients and chlorophyll a block indicated that the three variables were strongly related to one another. The cross-category analysis results shown the Cramer’s V(0.436) value of water mass in TS water masses and in nutrients, Cramer’s V(0.528) in TS water masses and in chlorophyll a ,Cramer’s V(0.359) in nutrients water masses and in chlorophyll a in winter. The cross-category analysis results shown the Cramer’s V(0.731) value of water mass in TS water masses and in nutrients, Cramer’s V(0.307) in TS water masses and in chlorophyll a ,Cramer’s V(0.359) in nutrients water masses and in chlorophyll a in spring. The cross-category analysis results shown the Cramer’s V(0.488) value of water mass in TS water masses and in nutrients, Cramer’s V(0.229) in TS water masses and in chlorophyll a ,Cramer’s V(0.167) in nutrients water masses and in chlorophyll a in summer. The cross-category analysis results shown the Cramer’s V(0.475) value of water mass in TS water masses and in nutrients, Cramer’s V(0.395) in TS water masses and in chlorophyll a ,Cramer’s V(0.503) in nutrients water masses and in chlorophyll a in fall. From the results of correlation analysis between water mass types revealed positive relationships.
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