新疆艾比湖主要入湖河流精河与博尔塔拉河三维荧光光谱特性及其与水质的关系  

Characteristics of three dimensional fluorescence spectra and its correlation with water quality in Jinghe and Bortala River from Lake Ebinur's major inflow tributaries,Xinjiang

作　　者：张海威[1,2] 张飞[1,2,3] 李哲[1,2] Abduwasit Ghulam Kung Hsiangte 任岩[1,2] 陈芸 

机构地区：[1]新疆大学资源与环境科学学院,乌鲁木齐830046 [2]新疆大学绿洲生态教育部重点实验室,乌鲁木齐830046 [3]新疆智慧城市与环境建模普通高校重点实验室,乌鲁木齐830046 [4]美国圣路易斯大学可持续发展中心,圣路易斯63108 [5]美国孟菲斯大学地球科学系,孟菲斯38152 [6]澳大利亚联邦科工组织水土研究所

出　　处：《湖泊科学》2017年第5期1112-1120,共9页Journal of Lake Sciences

基　　金：国家自然科学基金项目(41361045);国家自然科学基金-新疆联合基金项目(U1503302)联合资助

摘　　要：以艾比湖主要入湖河流——精河与博尔塔拉河为研究对象,分别分析了精河与博尔塔拉河的水体溶解性有机质(DOM)的组成结构及水质参数与荧光指数的关系.利用平行因子分析法对三维荧光光谱(EEM)分析发现,精河与博尔塔拉河均含有C1(260/420 nm)腐殖酸等有机质、C2(240,240/490 nm)UVC类腐殖质、C3(220/280,300/450 nm)蛋白质类有机质和C4(260,270/530 nm)类腐殖质,且不同荧光组分结构具有一定差异性.为了进一步了解DOM组分特征,采用三维荧光区域积分法分析各区域标准体积百分比,结果表明精河与博尔塔拉河EEM的区域Ⅰ与区域Ⅱ蛋白质有机质含量最高,区域Ⅲ富里酸含量最低.相关性分析表明,主要入湖河流的水质参数与荧光指数中,自生源指数(BIX)与总氮(TN)浓度以及腐殖化指数(HIX)与铵态氮(NH_4^+-N)浓度的相关性较强,相关系数分别为0.831和0.684,且具有显著性;HIX与TN浓度的相关系数为0.604,达到显著性水平.进而对相关性较强的水质参数与荧光指数进行3次拟合,其中HIX与NH_4^+-N浓度的拟合效果最好,相关性系数为0.908,其次是BIX与TN浓度,相关性系数为0.844.总之,通过分析精河与博尔塔拉河三维荧光特征,以及探讨荧光指数与水质参数的关系,可为治理干旱区水环境问题提供理论依据和参考.Water quality potential factor and chromophoric dissolved organic matter fluorescence in Lake Ebinur and its major inflow tributaries were analyzed. Results indicated that three dimensional fluorescence spectra（ EEM） of Jinghe River and Bortala River showed that all sampled water bodies contained C1（ 260/420 nm） humic organic matter,C2（ 240,240/490 nm） and C4（260,270/530 nm） kind of humus,and C3（220/280,300/450 nm） protein like,which was based on PARAFAC analysis meth-od. In order to further understand the characteristics of DOM components,it was found that protein organic matter was the highest and fulvic acid was the lowest in Jinghe River and Bortala River,based on FRI analysis and the regional standards related to water quality and fluorescence. Among the correlation coefficients of water quality parameters and fluorescence indexes,biological index（BIX） and total nitrogen（TN） concentration,humification index（HIX） and ammonium nitrogen（NH_4~＋-N） were high in Lake Ebinur＇s major inflow tributaries： the correlation coefficients were 0.831 and 0.684,at P0.01 significant level,respectively. Correlation between HIX and TN concentration was 0.604 at P 0.05 significant level. The water quality parameters and the fluorescence indexes showed a three fitting relationships,while the HIX-NH_4~＋-N fitting effect is best with the correlation coefficient of 0.908. The second one is the BIX-TN with the correlation coefficient of 0.844. The results of this work can provide scientific support for the water quality management and restoration in this area.

关 键 词：水质 荧光光谱 荧光指数 艾比湖 入湖河流 精河 博尔塔拉河 

分 类 号：X52[环境科学与工程—环境工程]