雪宝顶流域黄龙彩池新生钙华生物沉积特性  

Study on Bio-deposition properties of newborn travertine in the Huanglong area of the Xuebaoding watershed

作　　者：董鹏举 李琼芳[1] 董发勤[2,3] 代群威[3,4] 刘凡[5] 宋娜 赵晓夏 崔杰[3] 罗尧东[3] Xin Zhang O’Driscoll Mike DONG Pengju;LI Qiongfang;DONG Faqin;DAI Qunwei;LIU Fan;SONG Na;ZHAO Xiaoxia;CUI Jie;LUO Yaodong;XIN Zhang;O’Driscoll Mike(School of Life Science and Engineering,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China;Key Laboratory of Solid Waste Treatment and Resource Recycle,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China;School of Environment and Resource,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China;Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China;Institute of Karst Geology,CAGS,Guilin,Guangxi 541004,China;Physical&Computational Science Directorate,Pacific Northwest National Laboratory,Richland,Washington 99354,USA;Industrial Mineral Forums&Research Ltd.,Epsom,Surrey KT174RH,UK)

机构地区：[1]西南科技大学生命科学与工程学院,四川绵阳621010 [2]西南科技大学固体废物处理与资源化教育部重点实验室,四川绵阳621010 [3]西南科技大学环境与资源学院,四川绵阳621010 [4]西南科技大学核废物与环境安全国防重点学科实验室,四川绵阳621010 [5]中国地质科学院岩溶地质研究所,广西桂林541004 [6]西北太平洋国家实验室物理与计算科学指挥部,美国华盛顿99354 [7]工业矿物服务与研究有限公司,英国萨里埃普索姆KT174RH

出　　处：《中国岩溶》2021年第1期88-98,共11页Carsologica Sinica

基　　金：国家自然科学基金(41472309,41572035,41877288);四川省科技厅科技支撑项目(2016FZ0043)。

摘　　要：为探究钙华沉积的生物特性,以雪宝顶流域黄龙景区的五彩池和争艳彩池为研究对象,采集和分析研究点藻类的优势种类,利用傅里叶变换红外光谱仪和高效液相色谱确定优势藻胞外产物的主要组成和含量,并采用X射线荧光光谱仪、X射线衍射光谱仪、傅里叶变换红外光谱仪和扫描电子显微镜分析其新生钙华的元素组成、物相结构和微观形貌。结果表明:五彩池和争艳彩池的优势藻类分别是黄藻门(Xanthophyceae)和硅藻门(Bacillariophyta),藻类的胞外产物主要为蛋白质、多糖和有机酸;新生钙华以方解石为主,表面含羧基、甲基、醛基等基团;与无藻类参与的钙华沉积物对比,新生钙华晶体无特定形状,并出现溶蚀及穿孔现象。藻类及其胞外产物参与钙华沉积过程,调控钙华晶体微观形貌。The purpose of this work was to explore the effect of algae on travertine deposition.Two typical color pools with different dominant algae,named Wucaichi and Zhengyancaichi,were selected for the research,which lie in the Huanglong scenic area of the Xuebaoding watershed.The dominant algae was collected and the main composition and content of its extracellular products were determined by Fourier transform infrared spectroscopy and high performance liquid chromatography.The elemental composition,phase structure and morphology of the new travertine were analyzed by a x-ray fluorescence spectrometer,x-ray diffraction spectrometer,Fourier transform infrared spectrometer and scanning electron microscope.The results show that the dominant algae in Wucaichi and Zhengyancaichi are Xanthophyceae and Bacillariophyta,respectively,and the extracellular products of the algae are mainly protein,polysaccharide and organic acid.New travertine is mainly calcite with carboxyl,methyl,aldehyde and other groups on the surface.Compared with the travertine sediment without algae,the new travertine crystal has no specific shape,and there are dissolution and perforation on the crystal.Research indicates that algae and their extracellular products participate in the process of travertine deposition and regulate the crystal morphology of travertine.

关 键 词：新生钙华 生物沉积 藻类 晶体形貌 

分 类 号：P512.2[天文地球—地质学]