| 五种红树植物根区原位溶解性有机物(DOM)浓度及其荧光构成分析 |
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| 引用本文： | 刘玉,洪泽珊,黄雄飞,彭逸生,徐健荣.五种红树植物根区原位溶解性有机物(DOM)浓度及其荧光构成分析[J].环境科学学报,2015,35(8):2556-2562. |
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| 作者姓名： | 刘玉 洪泽珊 黄雄飞 彭逸生 徐健荣 |
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| 作者单位： | 1. 中山大学环境科学与工程学院, 广州 510275;2. 广东省环境污染控制与修复技术重点实验室(中山大学), 广州 510275,中山大学环境科学与工程学院, 广州 510275,1. 中山大学环境科学与工程学院, 广州 510275;2. 广东省环境污染控制与修复技术重点实验室(中山大学), 广州 510275,1. 中山大学环境科学与工程学院, 广州 510275;2. 广东省环境污染控制与修复技术重点实验室(中山大学), 广州 510275,1. 中山大学环境科学与工程学院, 广州 510275;2. 广东省环境污染控制与修复技术重点实验室(中山大学), 广州 510275 |
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| 基金项目： | 国家自然科学基金(No.41171416);国家高技术研究发展(863)计划(No.2007AA091703) |
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| 摘 要： | 红树植物对根际微生物群落产生影响,应与其根区微域中的溶解性有机物(dissolved organic matter,简称DOM)密切相关.采用总有机碳(TOC)分析仪和三维荧光分析法对5种主要红树植物建群种的DOM浓度和组分进行原位采样与测定.根际土和非根际土孔隙水DOC的总平均值分别为207.87 mg·L-1、144.51 mg·L-1.从三维荧光光谱图及荧光特征值r和荧光指数FI判断,根际土中有机物浓度及成分均大于非根际土中,根际土孔隙水DOM的内源性较非根际土中强,外源输入的腐殖酸量大于富里酸量.
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| 关 键 词： | 红树植物 原位 根际土 溶解性有机物 三维荧光特征 |
| 收稿时间： | 2014/6/19 0:00:00 |
| 修稿时间： | 2014/7/26 0:00:00 |
Content of dissolved organic matter(DOM)and its fluorescence constitution in root areas of five mangrove plants in situ |
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| LIU Yu,HONG Zeshan,HUANG Xiongfei,PENG Yisheng and XU Jianrong.Content of dissolved organic matter(DOM)and its fluorescence constitution in root areas of five mangrove plants in situ[J].Acta Scientiae Circumstantiae,2015,35(8):2556-2562. |
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| Authors: | LIU Yu HONG Zeshan HUANG Xiongfei PENG Yisheng and XU Jianrong |
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| Affiliation: | 1. School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275;2. Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology(Sun Yat-sen University), Guangzhou 510275,School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275,1. School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275;2. Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology(Sun Yat-sen University), Guangzhou 510275,1. School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275;2. Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology(Sun Yat-sen University), Guangzhou 510275 and 1. School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275;2. Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology(Sun Yat-sen University), Guangzhou 510275 |
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| Abstract: | Mangrove plants affect the microbial community in the rhizosphere and this should be closely related with the dissolved organic matter (DOM) in the root zone. The concentration and constitution of the DOM of five major mangrove species sampled in situ was investigated by the total organic carbon (TOC) analyzer and three-dimensional fluorescence spectroscopy. The average dissolved organic carbon (DOC) in pore water of the rhizosphere soil and the bulk soil were 207.87 mg · L-1 and 144.51 mg · L-1, respectively. The DOM content and composition in the rhizosphere soil were all higher than those in the bulk soil, and the endogenous of the DOM in pore water of the rhizosphere soil was higher than that in the bulk soil, based on the results of the 3D fluorescence spectra, fluorescence characteristic value r and fluorescence index FI. Humic acid from the exogenous input was higher than that of fulvic acid. |
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| Keywords: | mangrove plants in-situ rhizosphere soil dissolved organic matter (DOM) three-dimensional fluorescence |
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