本研究利用由國家海洋科學研究中心（NCOR）中之海洋資料庫所取得之衛星遙測以及其他實測所得海洋因子資料探討台灣東部黑潮流域葉綠素濃度與環境因子之關係。以seaWiFS衛星水色葉綠素濃度的自然對數值為應變數，使用通用線性模式（general linear model, GLM）計算出與其他環境因子間的統計關係，並進一步的以修正平均值（least square means, LSmeans）以及群聚分析法（cluster analysis）等方式，確認出葉綠素濃度較高的區域。使用之海洋環境因子資料包括了表水溫（sea surface temperature, sst）、渦流動能（Eddy Kinetic Energy, EKE）、水深（depth）、表層東西向（c20EW）和南北向海流（c20NS）以及理論推算之雲頂光照（light），並以經度與緯度作為資料之區集。收集的資料首先經過整合、篩選、轉化為對數值和改組成月平均資料以符合研究範圍內經緯度網格。網格的範圍約為台灣東部海域21.5~26.5°N；121~125°E，網格解析度為10’ X 10’網格系統。
GLM結果顯示所收集之因子的變化都與葉綠素濃度之變化有關，過程中約可得到超過20多條包含了2∼8個因子不等之迴歸方程式；由標準迴歸分析結果，因子之重要性依序為：緯度、深度、經度、光照、表水溫、東西向海流、南北向海流最後為渦流動能。而輔以各經度以及各緯度之LSmeans結果可知台灣東部海域之葉綠素濃度較高之區域集中於低經度以及高緯度之地區，其餘地方可能由於地區性或是季節性變化之原因而高葉綠素濃度變異較不規則。群聚分析法之結果顯示著偏西邊經度以及偏南、偏北緯度區域中的葉綠素濃度所形成之群聚與其他地區相異性較大。

Data of various marine environmental factors collected and integrated by the National Center of Ocean Research (NCOR) were used to search for possible statistics relationship with chlorophyll concentration of the Kuroshio and its adjacent waters off eastern Taiwan. The seaWiFS chlorophyll concentration in natural logarithm were used as dependent variable in General Linear Model（GLM）analysis, followed by least square means (lsmeans) and cluster analysis. Study area ranged from 21.5。N and 121。E to 26.5。N and 125。E eastern Taiwan. Data were first assembled, screened, transformed to natural logarithm and reorganized into monthly averages for individual geographical grid points of 10’X 10’.
The result of GLM analysis shows that all factors have significant relationship with chlorophyll concentration, more than 20 regression formulae were found with different combination of variable. Results of standard regression analysis show their order of importance as: latitude, depth, longitude, light, sst, east and west current on upper 20 meter(c20EW), north and south current on upper 20 meter(c20NS) and eddy kinetic energy(EKE), respectively. Results of lsmeans listing by latitude and by longitude showed that area with higher chlorophyll concentration are on high-latitude and low-longitude area but not between and area near east Taiwan tend to have high concentration and decreased eastward. Results of cluster analysis indicated that chlorophyll concentration of western longitude, and northern as well as southern latitude are different from other area.

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前言…………………………………………………1
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討論…………………………………………………13
參考文獻……………………………………………18
附錄…………………………………………………34

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