| 岩溶地表河旱季有色溶解有机质组成及来源:以金佛山碧潭河为例 |
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| 引用本文： | 刘跃,贺秋芳,刘宁坤,刘九缠,王正雄,段世辉.岩溶地表河旱季有色溶解有机质组成及来源:以金佛山碧潭河为例[J].环境科学,2018,39(6):2651-2660. |
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| 作者姓名： | 刘跃 贺秋芳 刘宁坤 刘九缠 王正雄 段世辉 |
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| 作者单位： | 西南大学地理科学学院岩溶环境重庆市重点实验室;中国地质科学院岩溶地质研究所国土资源部广西岩溶动力学重点实验室 |
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| 基金项目： | 重庆自然科学基金项目（CSTC2017JCYJYS0003）；中央高校基本科研业务费专项（XDJK2017D024） |
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| 摘 要： | 岩溶水体中的有机碳汇是岩溶碳汇的重要组成部分,为探明地处亚热带的岩溶地表河——碧潭河水体CDOM的组成及来源,于2017年1~3月开展从上游至下游9个点位的调查,利用三维荧光光谱结合紫外-可见吸收光谱以及常规水化学指标,分析碧潭河CDOM组成和来源及其影响因素.结果表明:(1)碧潭河水体中HCO_3~-的质量分数70%、Ca~(2+)+Mg~(2+)的质量分数80%,为主要阴阳离子,水化学性质主要受岩石风化作用的影响;(2)水体CDOM在旱季主要由类腐殖酸(C1)、类富里酸(C2)和类酪氨酸(C3)组成,FI、BIX、HIX以及β:α的平均值分别为2.06、0.87、4.35和0.69,较高的FI、BIX、β∶α以及较低的HIX显示碧潭河水体CDOM在旱季整体而言具有较强的自生源特征;(3)水体中DIC质量浓度与C2、C3荧光强度得分的相关性系数分别为0.515(P0.05)和0.644(P0.01),表明水生生物光合作用固定DIC对水体中CDOM的形成起到重要作用,该过程是对岩石风化碳汇的转换和稳定.
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| 关 键 词： | 岩溶地表河 有色溶解有机质(CDOM) 三维荧光光谱 平行因子分析 紫外-可见吸收光谱 岩溶水化学 碧潭河 |
| 收稿时间： | 2017/11/12 0:00:00 |
| 修稿时间： | 2017/12/14 0:00:00 |
Distinguishing the Compositions and Sources of the Chromophoric Dissolved Organic Matter in a Typical Karst River During the Dry Season: A Case Study in Bitan River, Jinfo Mountain |
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| LIU Yue,HE Qiu-fang,LIU Ning-kun,LIU Jiu-chan,WANG Zheng-xiong and DUAN Shi-hui.Distinguishing the Compositions and Sources of the Chromophoric Dissolved Organic Matter in a Typical Karst River During the Dry Season: A Case Study in Bitan River, Jinfo Mountain[J].Chinese Journal of Environmental Science,2018,39(6):2651-2660. |
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| Authors: | LIU Yue HE Qiu-fang LIU Ning-kun LIU Jiu-chan WANG Zheng-xiong and DUAN Shi-hui |
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| Institution: | Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400715, China,Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400715, China;Key Laboratory of Karst Dynamics, Ministry of Land and Resource & Guangxi, Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China,Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400715, China,Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400715, China,Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400715, China and Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400715, China |
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| Abstract: | |
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| Keywords: | karst surface river chromophoric dissolved organic matter(CDOM) EEMs PARAFAC UV-visible absorption spectrum karst hydrochemistry characteristics Bitan River |
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