丹江口水库表层沉积物有色可溶性有机物空间分布特征及其来源分析
Distribution and source analysis of chromophoric dissolved organic matter in the surface sediments of the Danjiangkou Reservoir
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摘要: 利用三维荧光光谱(Excitation-emission matrices, EEMs)与平行因子分析模型(Parallel factor analysis, PARAFAC)技术研究丹江口水库表层沉积物有色可溶性有机物(Chromophoric dissolved organic matter, CDOM)荧光组分、空间分布特征和来源,以及不同组分荧光强度与其它沉积物指标的相关性.结果表明,丹江口水库37个采样点CDOM由3类5个荧光组分组成,即类蛋白组分C1(285/345 nm)和C2(225,270/335 nm);陆源类腐殖质组分C3(260/450 nm)和C4(360/450 nm)及自生源类腐殖质组分C5(225,310/405 nm).其中代表类蛋白组分的C1和C2占较高比例,占总荧光强度的百分比的平均值为46.37%, C3与C4和C5占总组分的比例平均值分别为34.33%和19.31%.空间分布上3种荧光峰高值都集中在汉江的入湖河口处及丹江库区居民较多的城镇处,且呈现河流大于库区的趋势.荧光指数(FI)、腐殖化指数(HIX)和生物源指数(BIX)都表明丹江口水库沉积物CDOM的来源具有陆源及生物源的双重特征,陆源主要来源于汉江干流和周边城市居民的活动,以及部分区域农业畜禽养殖;生物源主要来自微生物及藻类的降解.相关性分析说明沉积物CDOM与N、P元素的迁移和转化有密切的关系.Abstract: Excitation-emission matrix spectroscopy(EEMS) combined with Parallel factor analysis(PARAFAC) was applied to investigate the fluorescent components and characteristics, and its source of chromophoric dissolved organic matter(CDOM) in the Danjiangkou Reservoir. The relationship between the fluorescent intensity of different components and other sediments quality parameter was also investigated. The results indicated that five fluorescent components were identified by PARAFAC, including two protein-like components namely C1(285/345 nm)and C2(225,270/335 nm) and two land -sourced humic-like components namely C3(260/450 nm) and C4(360/450 nm) and one authigenic-source humic-like component namely C5(225,310/405 nm). The two protein-like components C1 and C2 had high proportion, accounting for 46.37% of the total fluorescence intensity on average, while C3/C4 and C5 accounted for 34.33% and 19.31% respectively. Spatially, three fluorescence peak values were observed in the Hanjiang region and Danjiang urban region, and showed a tendency of river beging higher than the reservoir area.Fluorescence index(FI), biogenic index(BIX) and humification index(HIX) showed that CDOM in the surface sediments was derived from both land -sourced materials and endogenous sources, and the former originated primarily from Hanjiang river and the activities of urban residents, as well as the regional agriculture livestock and poultry breeding. Endogenous sources mainly from the degradation of microorganism and algae.Correlation analysis showed that CDOM in the surface sediments and the migration and transformation of N and P has a close relationship.
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[1] ARTINGE R, BUCKAU G, GEYER S, et al. Characterization of groundwater humic substances:Influence of sedimentary organic carbon[J]. Applied Geochemistry, 2000, 15(1):97-116. [2] HOPKINSON C S, VALLINO J J. Efficient export of carbon to the deep ocean through dissolved organic matter[J]. Nature, 2005, 433(7022):142-145. [3] 王美丽, 李军, 朱兆洲,等. 土壤溶解性有机质的研究进展[J]. 矿物岩石地球化学通报, 2010, 29(3):304-316. WANG M L, LI J, ZHU Z Z, et al. Advances in research on dissolved organic matter in soils[J]. Bulletin of Mineralogy, Petrology and Geochemistry, 2010, 29(3):304-316(in Chinese).
[4] ZIEGELGRUBER K L, ZENG T, ARNOLD W A, et al. Sources and composition of sediment pore water dissolved organic matter in prairie pothole lakes[J]. Limnology and Oceanography, 2013, 58(3):1136-1146. [5] KOWALCZUK P, DURAKO M J, YOUNG H, et al. Characterization of dissolved organicmatter fluorescence in the South Atlantic Bight with use of Parafac model interannual variability[J]. Marine Chemistry, 2009, 113(3-4):182-196. [6] COBLE P G. Characterization of marine and terrestrial DOM in seawater using excitation emission matrix spectroscopy[J]. Marine Chemistry, 1996, 51(4):325-346. [7] 郭卫东, 程远月, 吴芳. 海洋荧光溶解有机物研究进展[J]. 海洋通报, 2007, 26(1):98-106. GUO W D, CHENG Y Y, WU F. An overview of marine fluorescent dissolved organic matter[J]. Marine Science Bulletin, 2007, 26(1):98-106(in Chinese).
[8] WANG S R, WU F C, JIAO L X, et al. Organic matter compositions and DOM release from the sediments of the shallow lakes in the middle and lower reaches of Yangtze River region, China[J]. Applied Geochemistry, 2011, 26(8):1458-1463. [9] 石陶然, 张远, 于涛, 等. 滇池沉积物不同分子量溶解性有机质分布及其与Cu和Pb的相互作用[J]. 环境科学研究, 2013, 26(2):137-144. SHI T R, ZHANG Y, YU T, et al. Distribution of different molecular weight fractions of dissolved organic matters and their complexation with Cu and Pb in the sediment from Dianchi Lake, China[J]. Research of Envirnnmrntal Sciences, 2013, 26(2):137-144(in Chinese).
[10] Li Y Y, Jung H C, Jin H. Benthic flux of dissolved organic matter from lake sediment at different redox conditions and the possible effects of biogeochemical processes[J]. Science Direct, 2014, 61(18):97-107. [11] 程杰, 张莉, 王圣瑞, 等. 洱海沉积物不同分子量溶解性有机氮空间分布及光谱特征[J]. 环境化学, 2014, 33(11):1848-1856. CHENG J, ZHANG L, WANG S R, et al. Spatial distribution and spectral characteristics of dissolved organic nitrogen with different molecular weight in Erhai sediment[J]. Environmental Chemistry, 2014, 33(11):1848-1856(in Chinese).
[12] 李思悦, 程晓莉, 顾胜, 等. 南水北调中线水源地丹江口水库水化学特征研究[J]. 环境科学, 2008, 29(8):2111-2116. LI S Y, CHENG X L, GU S, et al. Hydro-chemical characteristics in the Danjiangkou Reservoir(water source area of the middle route of the south to north water transfer project), China[J].Environmental Science, 2008, 29(8):2111-2116(in Chinese).
[13] 周裕红, 王峰, 左秋云. 丹江口水库水环境质量影响因素的探讨[J]. 水利科技与经济, 2009, 15(10):847-849. ZHOU Y H, WANG F, ZUO Q Y. Discussing on the influence factor of water environment quality of Danjiangkou Reservoir[J]. Water Conservancy Science and Technology and Economy, 2009, 15(10):847-849(in Chinese).
[14] 徐黎, 李光华. 南水北调中线工程源头生态环境的综合治理[J]. 华北水利水电学院学报, 2003, 24(2):74-77. XU L, LI G H. Ecological environment comprehensive treatment in the midline project of south-to-north water diversion[J]. Journal of North China Institute of Water Conservancy and Hydroelectric Power, 2003, 24(2):74-77(in Chinese).
[15] 吴川, 张玉龙, 许秀贞, 等. 基于Landset TM/ETM和HJ-1A/B影像的丹江口水库水域变化监测研究[J]. 长江流域资源与环境, 2013, 22(9):1207-1213. WU C, ZHANG Y L, XU X Z, et al. Water surface monitoring of the danjiangkou reservoir using remotely-sensed landsat TM/ETM and HJ-1A/B imagery[J]. Resources and Environment in the Yangtze Basin, 2013, 22(9):1207-1213(in Chinese).
[16] 刘秀花, 胡安焱. 汉江丹江口水库水质变化趋势研究[J]. 人民长江, 2008, 39(15):36-39. LIU X H, HU A Y. Study on the water quality change trend of the Hanjiang River in Danjiangkou reservoir[J].Yangte River, 2008, 39(15):36-39(in Chinese).
[17] BARBER C B, DOBKIN D P, HUHDANPAA H. The quickhull algorithm for convex hulls[J]. ACM Transactions on Mathematical Software(TOMS), 1996, 22(4):469-483. [18] STEDMON C A, BRO R. Characterizing dissolved organic matter fluorescence with parallel factor analysis:A tutorial[J]. Limnology and Oceanography:Methods, 2008, 6(4):572-579. [19] OLIVIERI A C. Computing sensitivity and selectivity in parallel factor analysis and related multiway techniques:the need for further developments in net analyte signal theory[J]. Analytical Chemistry, 2005, 77(15):4936-4946. [20] KOWALCZUK P, STON-EGIERT J, COOPER W J, et al. Characterization of chromophoric dissolved organic matter(CDOM) in the Baltic Sea by excitation emission matrix fluorescencespectroscopy[J]. Marine Chemistry, 2005, 96(3-4):273-292. [21] COBLE P G. Marine optical biogeochemistry:The chemistry of ocean color[J]. Chemical Reviews, 2007,107(2):402-410 [22] STEDMON C A, MARKAUER S. Resolving the variability in dissolved organic matter fluorescence in a temperate estuary and its catchment using PARAFAC analysis[J]. Limnology and Oceanography, 2005, 50(2):686-697 [23] OHNO T B. Dissolved organic matter characterization using multiway spectral decomposition of fluorescence landscapes[J].Soil Science Society of America Journal,2006, 70(6):2028. [24] CORY R M, MCKNIGHT D M. Fluorescence spectroscopy reveals ubiquitous presence of oxidized and reduced quinones in dissolved organic matter[J].Environmental Science and Technology, 2005, 39(21):8142-8149. [25] STEDMON C A, MARKAGER S, BRO R. Tracing dissolved organic matter in aquatic environments using a new approach to fluorescence spectroscopy[J].Marine Chemistry,2003,82(3/4):239-254. [26] 黄昌春, 李云梅, 王桥, 等. 基于三维荧光和平行因子分析法的太湖水体CDOM组分光学特征[J].湖泊科学,2010, 22(3):375-382. HUANG C C, LI Y M, WANG Q, et al. Components optical property of CDOM in Lake Taihu based on three-dimensional excitation emission matrix fluorescence[J]. Lake Sciences, 2010, 22(3):375-382(in Chinese).
[27] YAO X, ZHANG Y, ZHU G W, et al. Resolving the variability of CDOM fluorescence to differentiate the sources and fate of DOM in Lake Taihu and its tributaries[J]. Chemosphere, 2011, 82(2):145-155. [28] MURPHY K R, RUIZ G M, DUNSMUIR W T M, et al. Optimized parameters for fluorescence-based verification of ballast water exchange by ships[J]. Environmental Science and Technology, 2006, 40(7):2357-2362. [29] COBLE P G, DELCASTILLO C E, AVRIL B. Distribution and optical properties of CDOM in the Arabian Sea during the 1995 South West Monsoon[J]. Deep-Sea Research Part Ⅱ, 1998, 45(10/11):2195-2223. [30] ZHANG Y, ZHANG E, 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 and Oceanography, 2010, 55(6):2645-2659. [31] 蔡明红, 肖宜华, 王峰, 等. 北极孔斯峡湾表层沉积物中溶解有机质的来源与转化历史[J].海洋学报, 2012, 34(6):102-113. CAI M H, XIAO Y H, WANG F, et al. Retrieving the origin and transformation history of dissolved organic matter in the surface sediment from an Arctic fjord(Kongsfjorden, Svalbard)[J]. Oceanologica Sinica, 2012, 34(6):102-113(in Chinese).
[32] MILLER M, MCKNIGHT D M.Comparison of seasonal changes in fluorescent dissolved organic matter among aquatic lake and stream sites in the Green Lakes Valley[J]. Journal of Geophysical Research, 2010, 115(12):1-12. [33] ZHANG Y, YIN Y, FENG L, 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. [34] COPY R M, MCKNIGHT D M. Fluorescence spectroscopy reveals ubiquitous presence of oxidized and reduced quinones in dissolved organic matter[J]. Environmental Science and Technology, 2005, 39(21):8142-8149. [35] MLADENOV N D, MCKNIGHT M, MACKO S A, et al. Chemical characterization of DOM inchannels of a seasonal wetland[J]. Aquatic Sciences Research Across Boundaries, 2007, 69(4):456-471. [36] OHNO T. Fluorescence inner-filtering correction for determining the humification index of dissolved organic matter[J]. Environmental Science and Technology, 2002, 36(4):742-746. [37] ZHANG Y, ZHANG E, YIN Y, et al. Characteristics and sources of chromophoric dissolved organic matter in lakes of Yungui Plateau China, differing in trophic state and altitude[J]. Limnology and Oceanography, 2010, 55(6):2645-2659. [38] HUGUET A, VACHER L, RELEXANS S, et al. Properties of fluorescent dissolved organic matter in the Gironde Estuary[J]. Organic Geochemistry, 2009, 40(6):706-719. [39] BIRDWELL J E, VALSARAJ K T. Characterization of dissolved organic matter in fogwater by excitation-emission matrix fluorescence spectroscopy[J]. Atmospheric Environment, 2010, 44(27):3246-3253. [40] CATALÁN N, OBRADOR B, FELIP M, et al. Higher reactivity of allochthonous vs. autochthonous DOC sources in a shallow lake[J]. Aquatic Science, 2013, 75(4):581-593. [41] 王超, 郭卫东, 郭占荣, 等. 大沽河流域地下水溶解有机物的三维荧光光谱特征[J]. 光谱学与光谱分析, 2013, 33(9):2460-2465. WANG C, GUO W D, GUO Z R, et al. Characterization of dissolved organic matter in groundwater from the coastal dagu river watershed, china using fluorescence excitation-emission matrix spectroscopy[J]. Spectroscopy and Spectral Analysis, 2013, 33(9):2460-2465(in Chinese).
[42] 肖隆庚, 陈文松, 陈国丰, 等. 中国南海CDOM三维荧光光谱特征研究[J]. 环境科学学报, 2014, 34(1):160-167. XIAO L G, CHEN W S, CHEN G F, et al. Fluorescence excitation-emission matrix spectroscopy of chromophoric dissolved organic matter in the South China Sea[J]. Acta Scientiae Circumstantiae, 2014, 34(1):160-167(in Chinese).
[43] 郭旭晶, 席北斗, 谢森, 等. 乌梁素海沉积物孔隙水中溶解有机质的荧光及紫外光谱研究[J]. 环境工程学报, 2012, 6(2):440-444. GUO X J, XI B D, XIE S, et al. Study on fluorescence spectra and UV-vis spectra of dissolved organic matter collected from sediment pore water in Wuliangsuhai Lake[J]. Chinese Journal of Environmental Engineering, 2012, 6(2):440-444(in Chinese).
[44] 沈烁, 王育来, 杨长明, 等. 南淝河不同排口表层沉积物DOM光谱特征[J]. 中国环境科学, 2014, 34(9):2351-2361. SHEN S, WANG Y L, YANG C M, et al. Spectral characteristic of dissolved organic matter(DOM) in the surface sediments from different discharging points along the Nanfei River in Hefei City, Anhui Province.[J]. China Environmental Science, 2014, 34(9):2351-2361(in Chinese).
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