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研究生:吳鳳儀
研究生(外文):Feng-I Wu
論文名稱:東海陸棚冬夏兩季(2008年1月與7月)浮游植物光合作用效率─可見光亮度曲線特性及其與環境因子關係之研究
論文名稱(外文):Phytoplankton photosynthetic-irradiance curves in winter and summer season (January and July 2008) in the East China Sea and their relation to environmental conditions.
指導教授:龔國慶龔國慶引用關係
指導教授(外文):Gwo-Ching Gong
學位類別:碩士
校院名稱:國立臺灣海洋大學
系所名稱:海洋環境化學與生態研究所
學門:自然科學學門
學類:海洋科學學類
論文種類:學術論文
論文出版年:2010
畢業學年度:98
語文別:中文
論文頁數:105
中文關鍵詞:東海光合作用效率─可見光亮度曲線環境因子
外文關鍵詞:East China Seaphotosynthetic-irradiance curvesenvironmental conditions
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本論文利用國科會「東海長期觀測與研究」整合計畫於2008年1月(代表冬天)及7月(代表夏天)東海航次現場取得之水文化學環境與基礎生產力培養資料,探討冬、夏兩季浮游植物光合作用效率-可見光亮度曲線(photosynthetic-irradiance curve; PB-E curve)之特性及其與環境因子之關係。PB-E curve之特性是由光合作用效率光飽和值(light saturated photosynthetic efficiency;PBm )及起始斜率(initial slope;a)這兩個參數所構成。研究顯示冬天時由於水體垂直混合作用強勁,有光層深度均淺於混合層,使得PB-E curve特性在不同深度或是不同測站未有明顯的變化,有光層內平均之 、值分別為2.80.6 gC gChl-1 hr-1、0.0090.002 gC gChl-1 hr-1 (E m-2 s-1)-1,達到光合作用效率飽和值所需之可見光亮度為30362 E m-2 s-1, 及參數的變化與水文化學等環境因子的變動無相關性。夏天時,水體層化現象相當明顯,有光層深度均遠深於表面混合層深度,使得PB-E curve特性呈現出明顯的深度變化,在不同測站位置的變化幅度也相當高,混合層內平均之 、值分別為11.17.1 gC gChl-1 hr-1、0.0120.006 gC gChl-1 hr-1 (E m-2 s-1)-1,達到光合作用效率飽和值所需之可見光亮度為943400 E m-2 s-1,混合層底部至有光層深度間平均之 、值分別為5.63.8 gC gChl-1 hr-1、0.0090.006 gC gChl-1 hr-1 (E m-2 s-1)-1,達到光合作用效率飽和值所需之可見光亮度為614246 E m-2 s-1, 及參數的變化與水文化學等環境因子的變動雖無顯著的相關性,但觀測到的高值大都出現在具有較高溫、高鹽、高透光率、貧營養鹽特性的水體中,高值的原因推測應與微型浮游植物在此類水體裡所占的比例較高有關。夏天的 值顯著高於冬天結果,推論是因為夏天具有較強的可見光強度與水體的層化現象所造成。
On board incubation of phytoplankton photosynthetic-irradiance curves (PB-E curve) and their relation to environmental conditions in the East China Sea were studied. Data discussed in this study were collected from January and July 2008 cruises and used to represent winter and summer condition, respectively. PB-E curve is described by two key parameters, light saturated photosynthetic efficiency ( ) and the initial slope (). In winter, depths of euphotic layer among stations were shallower than mixed layer depth. PB-E curves showed little depth variation in mixed layer and little spatial variation among stations because of low incident light and strong vertical mixing. The mean values of and  within the mixed layer were 2.80.6 gC gChl-1 hr-1、0.0090.002 gC gChl-1 hr-1 (E m-2 s-1)-1, respectively. Without any relation was found between and  and hydrographic and nutrients conditions. In summer, depths of euphotic layer among stations were much deeper than mixed layer depth because of strong summer stratification. Although the values of and  showed very high depth and spatial variation, and  in the mixed layer were higher than those below mixed layer in general. The mean value of and  in the mixed layer was 11.17.1 gC gChl-1 hr-1, 0.0120.006 gC gChl-1 hr-1 (E m-2 s-1)-1, respectively. The mean value of and  at depth between the bottom of mixed layer and euphotic depth was 5.63.8 gC gChl-1 hr-1, 0.0090.006 gC gChl-1 hr-1 (E m-2 s-1)-1. Most of the higher values of and  were observed in higher temperature, salinity and light transmission but nutrient-depleted waters. Higher percentage of picoplankton composition in such oligotrophic water might be the reason for higher value of . The mean value of in summer was significant higher than the value in winter might be resulted from higher available incident light and strong stratification in summer season.
致謝 i
摘要 i
Abstract iii
目錄 v
表目錄 viii
圖目錄 ix
第一章、序論 1
1.1 海洋基礎生產力的重要性 1
1.2量測海洋基礎生產力的方法 2
1.3 PB-E curve利用及文獻回顧 4
1.4 研究東海基礎生產力的重要性 7
1.5 論文之目標 9
第二章、研究方法 11
2.1研究地區與時間 11
2.2樣本採集 11
2.2.1電子儀器資料收集 11
2.2.2 海水樣本採樣方式 12
2.3分析方法 12
2.3.1光合作用有效輻射能量 12
2.3.2有光層深度與混合層深度 13
2.3.2.1有光層深度 13
2.3.2.2混合層深度 14
2.3.3無機營養鹽 14
2.3.4葉綠素a 17
2.3.5 PB-E curve培養 18
2.3.5.1 添加14C 19
2.3.5.2 樣水培養 20
2.3.5.3 樣水過濾 20
2.3.5.4 加酸乾燥 21
2.3.5.5 添加閃爍液並計數 21
2.3.5.6 PB- E curve之計算 22
第三章、結果 24
3.1 海面日照可見光亮度 24
3.2 混合層與有光層深度 25
3. 3 溫度 25
3. 4鹽度 26
3. 5懸浮顆粒透光率 27
3. 6 營養鹽 28
3.6.1總無機氮 28
3.6.2磷酸鹽 29
3.6.3 矽酸鹽 30
3. 7葉綠素 30
3. 8 PB-E curve 31
第四章、討論 34
4.1 PB-E curve參數隨深度之變化及其與水文化學環境之關係 34
4.1.1冬季 34
4.1.2夏季 35
4.2冬夏兩季PB-E curve參數之差異及其可能之原因 36
第五章、結論 38
參考文獻 41

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