在晚春到初夏期間，台灣周遭海域由於受控於豐水期的影響，很 明顯在河口區域有淡水注入的沖淡水舌，其沖淡水舌區域對於大氣中 之二氧化碳是作為匯，因為在注入較多淡水的同時，也提供了較多的 營養鹽，使得浮游植物與藻類對海水中之二氧化碳的利用率相對增加
。然而在調查南海海域KK 站的時序研究過程，也明顯看出海水的二 氧化碳有著日夜變化的趨勢（415.6 μatm~408.4 μatm），其震盪的幅 度可達7.2 μatm。
於台灣周遭海域的調查結果中，顯示此時期的空間性變化，整體 而言皆是作為大氣二氧化碳的源，其中海水與大氣的二氧化碳分壓差 以南海海域為最高（20.9±24.8 μatm），依次為台灣西部近岸（5.4±5.9 μatm）、西菲律賓海（11.5±13.1 μatm）和東海（4.3±68.6 μatm）。其 風速強度以西菲律賓海（10.6 m/s）為最高，依次為南海（9.7 m/s）
、東海（8.8 m/s）和台灣西部近岸（5.3 m/s）。最後，在二氧化碳海 氣交換通量計算的結果，以南海海域為最高（1.74±2.06 mol C/m2/yr
），其次為西菲律賓海（0.54±0.59 mol C/m2/yr）、台灣西部近岸（
0.29±0.18 mol C/m2/yr）和東海（0.28±4.94 mol C/m2/yr）。
此外二氧化碳海氣交換通量的大小，部分是受到大氣二氧化碳的 濃度高低所控制，這對邊緣海海域的影響是大於開放性大洋的，尤其 在亞洲區域主要的工業活動還是以沿海區域為主，這也造成了在近岸 區域的大氣二氧化碳濃度普遍較高。大氣二氧化碳區域性的高值皆是 來自於鄰接的陸地，尤其以台灣西部近岸及東海的明顯高值來看，它 的來源是來自於台灣及中國大陸。
局部區域方面，在陸棚區域由於主要是反應了生物作用效應，在 此區域皆是作為大氣二氧化碳的匯，除了在有陸源物質注入的河川區 域以外，是作為大氣二氧化碳的源。特別地是在沖淡水舌區域卻是個 匯，這是由於從河川注入的區域經由傳輸過程而提供此區域較高的營 養鹽，供給了生物所需的生長元素，進而經由消耗與吸收的過程，降 低了表水的二氧化碳含量。然而在南海海域的南方區域和流經西菲律 賓海海域上的黑潮，主要是受控於溫度作用的影響，而成為大氣二氧 化碳的來源。部分因為地形因素影響，所產生湧升流的區域，由於受 到底層含碳量較高的海水輸送至表層的過程，造成此區域之表水有著 較高的二氧化碳，而呈現出是個大氣二氧化碳的源。
跟過往文獻比較來看，本研究的東海航次跟過往文獻相比有著極 大之差異，其反應機制由過去的匯轉為源，這也反應了長江流量在減 少的情況下，黑潮侵入東海的陸棚的幅度逐漸增加，導致東海在二氧 化碳的角色上產生改變。
本研究主要是利用船走式二氧化碳分壓自動分析系統調查台灣 周遭海域的二氧化碳海氣交換情況，所採集到的資料密集度較高，因 此在探討二氧化碳海氣交換的通量與情況，其資料可信度也相對較高
；但是這分析方式所測量的水深範圍僅侷限在海洋表面，尤其在水深 較淺的邊緣海海域，會受限於垂直混合效應的影響，為改善此方式需 藉由更多的垂直水文及化學參數作為影響因素的判斷工具。
未來展望：
由於本研究所探討台灣周遭海域的二氧化碳海氣交換情況主要 是以2008 年晚春到初夏期間為題材，但在其它季節性的變化上尚是 不明確的，因此未來有機會的話可以以此方式來加以探討其它季節的 二氧化碳海氣交換通量及其影響因素，以利於更全面性的瞭解西太平 洋邊緣海的二氧化碳海氣交換情況。
然而在此次研究過程中發現表水二氧化碳有著日夜變化的震盪 現象，受限於航次的採樣天數影響，無法得到長時間的周期性變化資 料和特殊氣候現象的影響，假使能以錨錠的方式或棧橋的方式連續的 監測，這對局部區域的二氧化碳海氣交換情況之研究是最有利的研究 方式。
除了以現場調查研究之方式，來探討二氧化碳海氣交換情況以 外，更可以用各參數與表水二氧化碳之相關性，進一步的搭配衛星資 料，以搖測搭配數值模式之方法來推算表水二氧化碳的濃度，以解決 在觀測過程受時間和空間的侷限，這部分也是在往後對於海洋研究領 域逐漸該轉變的趨勢。
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