鄱阳湖枯水期CDOM光吸收特性与DOC浓度的定量关系研究

doi:10.11934/j.issn.1673-4831.2017.08.013

生态与农村环境学报 ›› 2017, Vol. 33 ›› Issue (8): 762-768.doi: 10.11934/j.issn.1673-4831.2017.08.013

• 污染控制与修复 • 上一篇

鄱阳湖枯水期CDOM光吸收特性与DOC浓度的定量关系研究

刘丽贞¹, 黄琪², 吴永明¹, 吴代赦³, 游海林¹, 邓觅³

1. 江西省科学院鄱阳湖研究中心, 江西南昌 330096;
2. 江西师范大学鄱阳湖湿地与流域研究教育部重点实验室, 江西南昌 330022;
3. 南昌大学资源环境与化工学院, 江西南昌 330031

收稿日期:2016-08-30 出版日期:2017-08-25 发布日期:2017-09-25
作者简介:刘丽贞(1987-),女,江西万年人,助理研究员,博士,主要从事湖泊生态和环境工程方面的研究。E-mail:woliulizhen2007@126.com
基金资助:
国家自然科学基金（41561093，41661102，41661018）；江西省青年科学基金（20151BAB213033，20161BAB213076）；江西省科学院引进博士项目（2014-YYB-30）；江西省科学院协同创新专项普惠制项目（2014-XTPH1-30）；江西省重大生态安全问题监控协同创新中心资助项目（JXS-EW-00）；鄱阳湖湿地与流域研究教育部重点实验室开放基金（PK2015007）

Optical Absorption Properties of Chromophoric Dissolvable Organic Matter (CDOM) and Their Quantitative Relationships With Dissolved Organic Carbon in the Poyang Lake in Dry Season

LIU Li-zhen¹, HUANG Qi², WU Yong-ming¹, WU Dai-she³, YOU Hai-lin¹, DENG Mi³

1. Poyang Lake Research Center, Jiangxi Academy of Sciences, Nanchang 330096, China;
2. Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, China;
3. School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 310031, China

Received:2016-08-30 Online:2017-08-25 Published:2017-09-25

摘要/Abstract

摘要：

研究了2015年枯水期鄱阳湖水体（包括河口区、鄱阳湖主湖开阔区）有色可溶性有机物（CDOM）的光吸收特性，并讨论了CDOM光吸收特性与溶解性有机碳（DOC）浓度之间的关系。结果表明，整个鄱阳湖水体中CDOM在254、280、350和440 nm波长处的吸收系数分别为7.86~20.24、5.64~14.58、1.46~4.41和0.36~1.06 m^-1；表征CDOM相对分子质量大小的M值（CDOM在波长250和365 nm处吸收系数比值）变化范围为5.27~7.66。枯水期湿地对鄱阳湖水体CDOM的影响较大，而5大入湖河流贡献不大。在各项参数中，光谱斜率比值（S_R）更能体现枯水期鄱阳湖水体CDOM光吸收特征。枯水期鄱阳湖水体ρ（DOC）在1.61~4.86 mg·L^-1之间变化，其平均值为2.31 mg·L^-1。枯水期鄱阳湖水体CDOM光吸收系数（a₂₅₄，x）与DOC浓度（y）呈显著正相关，回归方程为y=-0.53+0.27x（调整决定系数R²=0.76，P<0.01），2016年1月的实测值验证显示利用枯水期鄱阳湖水体CDOM光吸收特性研究DOC浓度具有可行性。这意味着研究枯水期鄱阳湖水体CDOM光吸收特性对研究碳库具有指示作用。

关键词: 有色可溶性有机物(CDOM), 吸收系数, 溶解性有机碳(DOC), 鄱阳湖

Abstract:

Optical absorption properties of chromophoric dissolvable organic matter (CDOM) in the waters of the Poyang Lake including estuaries and the main waterbody in the dry season of 2015 were studied and their relationships with dissolved organic carbon (DOC) discussed. Results show that CDOM absorption coefficient in the Poyang Lake at 254, 280, 350, and 440 nm (wave length) varied in the range of 7.86-20.24, 5.64-14.58, 1.46-4.41 and 0.36-1.06 m^-1, respectively, and M value, an index characterizing relative molecule size, did in the range from 5.27 to 7.66. During the dry season, wetlands were a major factor affecting CDOM concentrations in the lake, whereas the five major incoming rivers did not have much contribution to CDOM. Among the numerous parameters, S_R was the major index reflecting optical absorption properties of CDOM in the lake during the dry season. DOC in the dry season varied in the range from 1.61 to 4.86 mg·L^-1, with a mean value of 2.31 mg·L^-1. CDOM optical absorption coefficient(a₂₅₄,x) was positively related to DOC concentration (y). The relationship was fitted with the linear regression equation y=-0.53+0.27x and calibrated with the equation Adj. R²=0.76, P<0.01. Validation with the field measurements conducted in the Poyang Lake in January 2016 demonstrates that it is feasible to use optical absorption properties of CDOM in the waterbody of the Poyang Lake during the dry season to explore DOC concentration in the lake water, which means that CDOM in the Poyang Lake in the dry season can be used as an indicator in the study on carbon pool in the lake.

Key words: chromophoric dissolved organic matter, absorption coefficient, dissolved organic carbon, Poyang Lake

中图分类号:

X14
P951

刘丽贞, 黄琪, 吴永明, 吴代赦, 游海林, 邓觅. 鄱阳湖枯水期CDOM光吸收特性与DOC浓度的定量关系研究[J]. 生态与农村环境学报, 2017, 33(8): 762-768.

LIU Li-zhen, HUANG Qi, WU Yong-ming, WU Dai-she, YOU Hai-lin, DENG Mi. Optical Absorption Properties of Chromophoric Dissolvable Organic Matter (CDOM) and Their Quantitative Relationships With Dissolved Organic Carbon in the Poyang Lake in Dry Season[J]. Journal of Ecology and Rural Environment, 2017, 33(8): 762-768.

参考文献

[1] ROCHELLE-NEWALL E J,FISHER T R.Chromophoric Dissolved Organic Matter and Dissolved Organic Carbon in Chesapeake Bay[J].Marine Chemistry,2002,77(1):23-41.
[2] LAURION I,VENTURA M,CATALAN J,et al.Attenuation of Ultraviolet Radiation in Mountain Lakes:Factors Controlling the Among-and Within-Lake Variability[J].Limnology & Oceanography,2000,45(6):1274-1288.
[3] 傅平青,刘丛强,吴丰昌.水环境中腐殖质-金属离子键合作用研究进展[J].生态学杂志,2004,23(6):143-148.[FU Ping-qing,LIU Cong-qiang,WU Feng-chang.Binding of Metal-Ions With Humic Substances in Aquatic Environments:A Review[J].Chinese Journal of Ecology,2004,23(6):143-148.]
[4] STEWART A J,WETZEL R G.Asymmetrical Relationships Between Absorbance,Fluorescence,and Dissolved Organic Carbon[J].Limnology & Oceanography,1981,26(3):590-597.
[5] ASMALA E,STEDMON C A,THOMAS D N.Linking CDOM Spectral Absorption to Dissolved Organic Carbon Concentrations and Loadings in Boreal Estuaries[J].Estuarine,Coastal & Shelf Science,2012,111:107-117.
[6] 姜广甲,马荣华,段洪涛.利用CDOM吸收系数估算太湖水体表层DOC浓度[J].环境科学,2012,33(7):2235-2243.[JIANG Guang-jia,MA Rong-hua,DUAN Hong-tao.Estimation of DOC Concentrations Using CDOM Absorption Coefficients:A Case Study in Taihu Lake[J].Environmental Science,2012,33(7):2235-2243.]
[7] ZHANG Y L,QIN B Q,ZHU G W,et al.Chromophoric Dissolved Organic Matter (CDOM) Absorption Characteristics in Relation to Fluorescence in Lake Taihu,China,a Large Shallow Subtropical Lake[J].Hydrobiologia,2007,581(1):43-52.
[8] HESTIR E L,BRANDO V,CAMPBELL G,et al.The Relationship Between Dissolved Organic Matter Absorption and Dissolved Organic Carbon in Reservoirs Along a Temperate to Tropical Gradient[J].Remote Sensing of Environment,2015,156:395-402.
[9] 陶海南.鄱阳湖生态环境保护与生态文明建设[C]//中国环境科学学会2009年学术年会论文集(第3卷).北京:中国环境科学出版社,2009:320-340.[TAO Hai-nan.Ecological Environmental Protection and Construction of Ecological Civilization in Poyang Lake[C]//China Environmental Science Society in 2009 Academic Essays (Volume 3).Beijing:China Environmental Science Press,2009:320-340.]
[10] 钱奎梅,刘霞,段明,等.鄱阳湖蓝藻分布及其影响因素分析[J].中国环境科学,2016,36(1):261-267.[QIAN Kui-mei,LIU Xia,DUAN Ming,et al.Distribution and Its Influencing Factors of Bloom-Forming Cyanobacteria in Poyang Lake[J].China Environmental Science,2016,36(1):261-267.]
[11] ZHOU Y Q,ZHANG Y L,JEPPESEN E,et al.Inflow Rate-Driven Changes in the Composition and Dynamics of Chromophoric Dissolved Organic Matter in a Large Drinking Water Lake[J].Water Research,2016,100:211-221.
[12] ZHANG Y L,ZHANG E L,YIN Y,et al.Characteristics and Sources of Chromophoric Dissolved Organic Matter in Lakes of the Yungui Plateau,China,Differing in Trophic State and Altitude[J].Limnology & Oceanography,2010,55(6):2645-2659.
[13] ZHOU Y,ZHANG Y,SHI K,et al.Dynamics of Chromophoric Dissolved Organic Matter Influenced by Hydrological Conditions in a Large,Shallow,and Eutrophic Lake in China[J].Environmental Science & Pollution Research,2015,22(17):12992-13003.
[14] LIU X H,ZHANG Y L,SHI K,et al.Absorption and Fluorescence Properties of Chromophoric Dissolved Organic Matter:Implications for the Monitoring of Water Quality in a Large Subtropical Reservoir[J].Environmental Science & Pollution Research,2014,21(24):14078-14090.
[15] 胡水波,曹文熙,林俊芳,等.热带东印度洋6° N断面有色可溶性有机物(CDOM)光谱吸收特性[J].热带海洋学报,2013,32(4):13-21.[HU Shui-bo,CAO Wen-xi,LIN Jun-fang,et al.Spectral Absorption Properties of Colored Dissolved Organic Matter Along 6° N Transect of Tropical Eastern Indian Ocean[J].Journal of Tropical Oceanography,2013,32(4):13-21.]
[16] 邵田田,宋开山,丁智,等.辽河水体光学吸收特性的季节变化[J].生态学报,2016,36(7):1861-1871.[SHAO Tian-tian,SONG Kai-shan,DING Zhi,et al.Absorption Characteristics and Seasonal Variations of Optically Active Water Constituents From Liaohe River[J].Acta Ecologica Sinica,2016,36(7):1861-1871.]
[17] ZHANG Y L,YIN Y,FENG L Q,et al.Characterizing Chromophoric Dissolved Organic Matter in Lake Tianmuhu and Its Catchment Basin Using Excitation-Emission Matrix Fluorescence and Parallel Factor Analysis[J].Water Research,2011,45(16):5110-5122.
[18] 张运林,秦伯强.梅梁湾、大太湖夏季和冬季CDOM特征及可能来源分析[J].水科学进展,2007,18(3):415-423.[ZHANG Yun-lin,QIN Bo-qiang.Feature of CDOM and Its Possible Source in Meiliang Bay and Da Taihu Lake in Taihu Lake in Summer and Winter[J].Advances in Water Science,2007,18(3):415-423.]
[19] 胡启武,幸瑞新,朱丽丽,等.鄱阳湖苔草湿地非淹水期CO₂释放特征[J].应用生态学报,2011,22(6):1431-1436.[HU Qi-wu,XING Rui-xin,ZHU Li-li,et al.Characteristics of CO₂ Emission From Carex-Dominated Wetland in Poyang Lake in Non-Flooded Period[J].Chinese Journal of Applied Ecology,2011,22(6):1431-1436.]
[20] DE HAAN H.Solar UV-Light Penetration and Photodegradation of Humic Substances in Peaty Lake Water[J].Limnology & Oceanography,1993,38(5):1072-1076.
[21] MILLER W L,ZEPP R G.Photochemical Production of Dissolved Inorganic Carbon From Terrestrial Organic Matter:Significance to the Oceanic Organic Carbon Cycle[J].Geophysical Research Letters,1995,22(4):417-420.
[22] 刘丽贞,秦伯强,吴攀,等.太湖北部不同湖区春、夏季溶解性酸性多糖分布[J].环境科学研究,2013,26(9):966-971.[LIU Li-zhen,QIN Bo-qiang,WU Pan,et al.Study on the Dissolved Acidic Polysaccharides at Different Lake Areas in the Northern Lake Taihu in Spring and Summer[J].Research of Environmental Sciences,2013,26(9):966-971.]
[23] 冯龙庆,时志强,潘剑君,等.太湖冬季有色可溶性有机物吸收荧光特性及遥感算法[J].湖泊科学,2011,23(3):348-356.[FENG Long-qing,SHI Zhi-qiang,PAN Jian-jun,et al.Characteristics of Spectral Absorption,Fluorescence and Remote Sensing Algorithms of Chromophoric Dissolved Organic Matter in Winter,Lake Taihu[J].Journal of Lake Sciences,2011,23(3):348-356.]

鄱阳湖枯水期CDOM光吸收特性与DOC浓度的定量关系研究

Optical Absorption Properties of Chromophoric Dissolvable Organic Matter (CDOM) and Their Quantitative Relationships With Dissolved Organic Carbon in the Poyang Lake in Dry Season

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	曾瑜, 厉莎, 胡煜彬. 1961-2014年鄱阳湖流域降雨侵蚀力时空变化特征[J]. 生态与农村环境学报, 2019, 35(1): 106-114.
[2]	白秀玲, 辛星, 李文丽, 王杰华, 宁立新. 植物分解及含水量对鄱阳湖湿地土壤磷形态影响模拟研究[J]. 生态与农村环境学报, 2018, 34(7): 592-598.
[3]	胡佳, 吴琴, 陈正兴, 崔浩, 胡启武. 耕作年限对鄱阳湖围垦区稻田土壤有机碳组分的影响[J]. 生态与农村环境学报, 2018, 34(3): 240-246.
[4]	段后浪, 赵安, 姚忠. 鄱阳湖湿地典型草洲主要植物种群在5个资源环境梯度上的生态位特征[J]. 生态与农村环境学报, 2017, 33(3): 225-233.
[5]	王莉莉, 杨涛, 高晨, 高丹, 卢成芳, 王野乔. 鄱阳湖南矶湿地净生态系统CO₂交换量的日变化特征[J]. 生态与农村环境学报, 2017, 33(11): 1007-1012.
[6]	邵明勤, 蒋剑虹, 戴年华, 廖舟怡. 鄱阳湖越冬灰鹤和白枕鹤的数量与集群特征[J]. 生态与农村环境学报, 2014, 30(4): 464-469.
[7]	李典宝, 张玮, 王丽卿, 山鹰, 韩樑. 上海地区不同河道CDOM光谱吸收特征及其可能来源分析[J]. 生态与农村环境学报, 2014, 30(4): 488-494.
[8]	简敏菲, 徐鹏飞, 熊建秋, 陈朴青, 李玲玉. 乐安河-鄱阳湖段湿地表土重金属污染风险及水生植物群落多样性评价[J]. 生态与农村环境学报, 2013, 29(4): 415-421.
[9]	刘明亮, 张运林, 王鑫, 李云亮. 太湖有色可溶性有机物4种光谱模型的对比[J]. 生态与农村环境学报, 2009, 25(1): 42-46.
[10]	杨帆, 朱晓敏, 黄清辉, 李建华. 崇明岛前卫湖水中有色溶解性有机质的分布和来源[J]. 生态与农村环境学报, 2008, 24(3): 51-54.
[11]	陈祖义, 章力干. 3种水生蔬菜对稀土元素钷的吸收与富集[J]. 生态与农村环境学报, 2001, 17(1): 40-43.
[12]	殷彩霞, 彭莉, 李静, 陆树刚. 昆明市西山土壤—菊科植物系统铜锌分布特征研究[J]. 生态与农村环境学报, 1999, 15(1): 59-61.
[13]	廖金凤. 海南省几种草本植物微量元素的组成[J]. 生态与农村环境学报, 1998, 14(4): 24-28.
[14]	舒长根. 农业生产活动对鄱阳湖区生态环境的影响[J]. 生态与农村环境学报, 1996, 12(4): 11-14.
[15]	刘惠民, 杨沂凤. 谈谈吉湖农业开发项目的环境影响及其对策[J]. 生态与农村环境学报, 1992, 8(2): 13-17.