东海赤潮高发区沉积物中叶绿素的分析

应用生态学报 ›› 2003, Vol. ›› Issue (7): 1102-1106.

东海赤潮高发区沉积物中叶绿素的分析

李肖娜¹, 周伟华², 刘素美¹, 张经^1,3

1. 青岛海洋大学化学化工学院, 青岛 266003;
2. 中国科学院南海海洋研究所热带海洋环境动力学重点实验室, 广州 510301;
3. 华东师范大学河口海岸动力沉积和动力地貌综合国家重点实验室, 上海 200062

收稿日期:2002-12-18 修回日期:2003-02-26
通讯作者: 李肖娜,女,1979年生,硕士研究生,主要从事生物地球化学方面的研究,Tel:0532-2032005,E-mail:2eq1@sina.com.cn.
基金资助:
国家重点基础研究发展规划资助项目(G1999043705和2001CB409703).

Sediment chlorophyll in HAB(Harmful Algal Bloom) area of East China Sea

LI Xiaona¹, ZHOU Weihua², LIU Sumei¹, ZHANG Jing^1,3

1. College of Chemistry and Chemical Engineering, Ocean University of Qingdao, Qingdao 266003, China;
2. Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;
3. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

Received:2002-12-18 Revised:2003-02-26

摘要/Abstract

摘要： 研究分析了2002年8～9月“赤潮973”航次所采集的沉积物中叶绿素a及其降解产物脱镁叶绿酸含量与分布.结果表明,叶绿素a和脱镁叶绿酸是同源的;随深度增加叶绿素a和脱镁叶绿酸的含量呈递减趋势,到一定深度后含量不再变化,个别站位叶绿素a和脱镁叶绿酸的垂直分布出现了许多小突跃,可能是由生物扰动引起;表层沉积物(0～0.5cm)中的叶绿素a和脱镁叶绿酸的变化幅度分别为0.14～1.17和0.83～5.58μg·g^-1,平均值分别为0.54和2.45μg·g^-1;并初步探讨水深(光强)、盐度、温度、含水量对叶绿素水平分布的影响;脱镁叶绿酸作为叶绿素的主要降解产物,到一定深度后,成为叶绿素的主要存在形式,约占80%～90%;由于水温的不同,夏季沉积物中的叶绿素a和脱镁叶绿酸含量是春季的3倍之多;比较了上层水柱中的叶绿素和沉积物中的叶绿素的相对含量,平均而言,沉积物中叶绿素占上层水柱中叶绿素的31%.

关键词: 叶绿素a, 脱镁叶绿酸, 沉积物

Abstract: The content and distribution of chlorophyll a (chl-a) and phaeopigments (pha-a) in the sediment of East China Sea was investigated in August and September ,2002.The results showed that chlorophyll a and phaeopigments had the same resource.Both chlorophyll a and phaeopigments decreased significantly with increasing depth, and would be stable to a certain depth.There are several observed leaps in the vertical distribution of chlorophyll a and phaeopigments,which might reflect the effects of bioturbation.The chlorophyll a and phaeopigments concentration on the surface of sediment varied from 0.14 to 1.17 μg·g^-1 and 0.83 to 5.58 μg·g^-1, respectively,and the mean concentrations in the top centimeter of sediment (0～0.5cm) were 0.54μg·g^-1 for chlorophyll a and 2.45μg·g^-1 for phaeopigments.The spatial distribution of benthic chlorophyll a and phaeopigments were affected by the combination of several factors such as depth (and therefore light) ,temperature, salinity and water content.As the main degradation product of chlorophyll a, phaeopigments became the main type of chlorophyll while increased to certain extent,and acounting for 80～90% of total chlorophyll.Due to the water temperature ,the surface chlorophyll a and phaeopigments concentration varied significantly with the season.Total chlorophyll a in the sediment accounted for 31% of total chlorophyll a in the water column.

Key words: Chlorophyll a, Phaeopigments, Sediment

中图分类号:

P736.4

李肖娜, 周伟华, 刘素美, 张经. 东海赤潮高发区沉积物中叶绿素的分析[J]. 应用生态学报, 2003, (7): 1102-1106.

LI Xiaona, ZHOU Weihua, LIU Sumei, ZHANG Jing. Sediment chlorophyll in HAB(Harmful Algal Bloom) area of East China Sea[J]. Chinese Journal of Applied Ecology, 2003, (7): 1102-1106.

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