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The Study on Fluorescent Characteristics of Marine Dissolved Organic Matter and Their Biological Controlling Factors

Abstract

本文采用三维荧光光谱分析法(EEMs),对中国东南沿海若干典型海域(长江口、温州湾、厦门湾九龙江口)水体中荧光溶解有机物(FDOM)的两种组分——有色溶解有机物(CDOM)和色氨酸——的荧光特性进行了研究。一方面通过现场实验,研究河口近海FDOM的来源、分布及变化,分析并总结了这些海域FDOM的三维荧光光谱特征,探讨荧光光谱峰在河口混合过程中的变化规律及其地球化学意义。另一方面通过对厦门湾中肋骨条藻、角毛藻和小球藻的实验室培养,探讨浮游植物在海洋FDOM产生、转化中的作用。主要研究结果如下:(1)长江口、温州湾、九龙江口海水色氨酸的含量为0.0036~0.0264mg/L,CDOM相对荧光强度...The fluorescence characteristics of marine dissolved organic matter were studied using excitation-emission matrix spectroscopy(EEMs) method in typical areas of Chinese southeast coastal waters, including the Changjiang River estuary, the Wenzhou Bay and the Jiulong River estuary. The distribution and variation of fluorescent dissolved organic matter(FDOM) in these three waters were studied. The fl...学位:理学硕士院系专业:海洋与环境学院海洋学系_海洋化学学号:20022701

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