黄龙争艳彩池边石坝藻席钙华特性研究及意义  

Study on characteristics and significances of algal mats travertine in Zhengyancai pool marble dam of Huanglong natural reserve

作　　者：宋韬 代群威[1,2] 李琼芳[3] 董发勤[1] 崔杰[1] 安德军[4] 罗尧东[1] Bruce WFouke SONG Tao;DAI Qunwei;LI Qiongfang;DONG Faqin;CUI Jie;AN Dejun;LUO Yaodong;Bruce WFouke(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;School of Life Science and Engineering,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China;Huanglong National Scenic Spot Administrative,Songpan,Sichuan 623300,China;Carl R.Woese Institute for Genomic Biology,Department of Geology,and Department of Microbiology,University of Illinois Urbana−Champaign,Urbana,Illinois 61801,USA)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]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 [3]西南科技大学生命科学与工程学院,四川绵阳621010 [4]黄龙国家级风景名胜区管理局,四川松潘623300 [5]伊利诺伊大学香槟分校地质与生物系,美国厄巴纳61801

出　　处：《中国岩溶》2021年第1期105-111,共7页Carsologica Sinica

基　　金：国家自然科学基金面上项目(41877288,41973053,41572035)。

摘　　要：藻席钙华对彩池边坝的颜色及钙华的沉积具有调控作用,会影响彩池边壁稳定性,导致独特景观破坏。文章选取黄龙争艳彩池作为研究对象,通过对藻席钙华的基本理化特征和微观形貌观察与分析,明确藻席钙华的沉积特性。结果表明:藻席钙华含水率为5.70%,密度为1.56 g·cm^(-3),具有较强吸水能力;通过XRD确定其主要矿物相为方解石;利用元素分析仪确定总碳含量为12.06%,在生物作用下,受次生有机碳影响较大;藻席钙华的微观形貌显示,硅藻与钙华颗粒是构成藻席钙华的基本单元,是一个复合型生物集合体。Algal mats travertine has a regulating effect on the color and deposition of travertine of Zhengyancai pool marble dam,which affects the stability of rimstone dam,leading to the destruction of the unique landscape.Therefore,it is of great importances to analyse the algal mats travertine.In this paper,Zhengyancai pool was selected as the study site,the deposition of travertine and morphological characteristics were defined through the analysis of basic physicochemical characteristics and micro-morphology of algal mats travertine. The results showed that,(1)the water content and density of algal mats travertine were 5.70% and 1.56 g·cm^(-3),respectively,indicating strong water absorption capacity;(2)The main mineral phase was calcite determined by X-ray diffraction spectrometer;(3)Chemical components analysis of algal mats travertine showed that the total carbon was 12.60% by elemental analyzer,indicating that the algal mats travertine were greatly affected by the secondary organic carbon under the biological action.(4)The surface micro-morphology showed that diatom and travertine particles were basic units of algal mats travertine,which is a complex biological collection.

关 键 词：藻席钙华 沉积特性 硅藻 微观形貌 黄龙自然保护区 

分 类 号：P642.25[天文地球—工程地质学]