Spectroscopic Characteristics and Sources of Dissolved Organic Matter from Soils around Dianchi Lake, Kunming
LI Shuai-dong1, 2, 3, JIANG Quan-liang3, LI Ye3, WU Ya-lin3, JIANG Jun-wu3, HUANG Tao1, 2, 3, YANG Hao3, HUANG Chang-chun1, 2, 3*
1. Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing 210023, China
2. State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing 210023, China
3. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China
Abstract：Ultraviolet-visible (UV-Vis) and three-dimensional excitation emission matrix fluorescence (3D-EEM) spectroscopies, combined with parallel factor analysis were conducted to investigate the structure and origin of dissolved organic matters (DOM) from soils around Dianchi lake, Kunming. The results showed that the characteristics of all samples’ UV-Visible spectra were alike. The absorption coefficient of DOM samples decreased gradually with the wavelength increasing. There was an obvious shoulder absorption peak in the 250～280 nm band. Additionally, in Chaihe reservoir and the east of Dianchi lake, the aromaticity (A250/A365), molecular weight (SR), humification degree (SUVA254) and hydrophobicity (SUVA260) of soil’s DOM were all much higher than those at other three sampling sites. The 3D-EEM spectrum revealed that all DOM samples around Dianchi lake had four special peaks, which were UV fulvic-like fluorescence, visible fulvic-like fluorescence and two humic-like fluorescences. Fluorescence index (FI) and Autochthonous index (BIX) suggested that soil’s DOM were main from the external import and had low protein-like components and bioavailability. Four fluorescence components were identified with parallel factor analysis and showed significant correlation (p＜0.01), which were illustrated that the four fluorescence components had a similar source. In addition, the contribution rates of fulvic-like fluorescence component was the highest, which suggested that the content of fulvic acid material was relatively higher in soil’s DOM.
李帅东，姜泉良，黎 烨，吴亚林，江俊武，黄 涛，杨 浩，黄昌春. 环滇池土壤溶解性有机质(DOM)的光谱特征及来源分析[J]. 光谱学与光谱分析, 2017, 37(05): 1448-1454.
LI Shuai-dong, JIANG Quan-liang, LI Ye, WU Ya-lin, JIANG Jun-wu, HUANG Tao, YANG Hao, HUANG Chang-chun. Spectroscopic Characteristics and Sources of Dissolved Organic Matter from Soils around Dianchi Lake, Kunming. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(05): 1448-1454.
[1] Barker J D, Dubnick A, Lyons W B, et al. Arctic, Antarctic, and Alpine Research, 2013, 45(3): 305.
[2] Fang W, Wei Y, Liu J. Journal of Hazardous Materials, 2016, 310: 1.
[3] Ran Bi, Qin Lu, Tian Yuan. Journal of Environmental Sciences, 2013, 25(10): 2093.
[4] Hansen A M, Kraus T E C, Pellerin B A, et al. Limnology and Oceanography, 2016, 61(3): 1015.
[5] GAO Jie, JIANG Tao, LI Lu-lu, et al(高 洁, 江 韬, 李璐璐, 等). Environmental Science(环境科学), 2015, 36(1): 155.
[6] Liu W, Wang S, Zhang L, et al. Environmental Earth Sciences, 2015, 74(5): 3767.
[7] Yu G H, Wu M J, Wei G R, et al. Environmental Science & Technology, 2012, 46(11): 6102.
[8] Zhou Y, Zhang Y, Shi K, et al. Environmental Science and Pollution Research, 2015. 1.
[9] XIE Li, YANG Hao, QU Xiao-xia, et al(谢 理, 杨 浩, 渠晓霞, 等). Research of Environmental Sciences(环境科学研究), 2013, 26(1): 72.
[10] Jaffrain J, Gérard F, Meyer M, et al. Soil Science Society of America Journal, 2007, 71(6): 1851.
[11] Inamdar S, Finger N, Singh S, et al. Biogeochemistry, 2012, 108(1-3): 55.
[12] Yang L, Chang S W, Shin H S, et al. Journal of Hydrology, 2015, 523: 333.
[13] Seredyńska-Sobecka B, Stedmon C A, Boe-Hansen R, et al. Water Research, 2011, 45(6): 2306.
[14] Lee S, Hur J. Chemosphere, 2016, 149: 41.
[15] Pretsch E, Clerc T, Seibl J, et al. Springer Science & Business Media, 2013.
[16] LI Lu-lu, JIANG Tao, LU Song, et al(李璐璐, 江 韬, 卢 松, 等). Environmental Science(环境科学), 2014, 35(9): 3408.
[17] Xiao Y H, Sara-Aho T, Hartikainen H, et al. Limnology and Oceanography, 2013, 58(2): 653.
[18] Peng N, Wang K, Liu G, et al. Environmental Science and Pollution Research, 2014, 21(7): 5217.
[19] D’Andrilli J, Foreman C M, Marshall A G, et al. Organic Geochemistry, 2013, 65: 19.
[20] Korak J A, Wert E C, Rosario-Ortiz F L. Water Research, 2015, 68: 432.
[21] Yang L, Kim D, Uzun H, et al. Chemosphere, 2015, 121: 84.
[22] CHENG Qin-lin, ZHENG Bing-hui, WANG Sheng-rui, et al(程庆霖, 郑丙辉, 王圣瑞, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2014, 34(3): 698.
[23] Bai Y, Su R, Han X, et al. Acta Oceanologica Sinica, 2015, 34(10): 1.
