雪宝顶流域黄龙“8·8”地震后短期内主 要水环境变化特征  

Characteristics of water environment changes in a short period after the"8 August 2017"earthquake in Huanglong,Xuebaoding watershed

作　　者：赵晓夏 李琼芳[1] 董发勤[2,3] 代群威[3,4] 宋娜 董鹏举 崔杰[3] 罗尧东[3] 张强[5] Xin Zhang O’Driscoll Mike ZHAO Xiaoxia;LI Qiongfang;DONG Faqin;DAI Qunwei;SONG Na;DONG Pengju;CUI Jie;LUO Yaodong;ZHANG Qiang;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,Ministy of Education,Southwest University of Science and Technology,Mianyang,Sichaun 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,Guiling,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541000 [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77-87,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：富含Ca^(2+)和HCO^(-)_(3)的水体是黄龙钙华地貌得以持续沉积的首要条件。为明确2017年九寨沟“8∙8”地震是否对黄龙脆弱钙华体产生影响并进而导致水环境的改变,于2017年10月和2018年8月对黄龙3个主要监测点进行了水样采集和水质参数检测。通过主成分分析震前的多次水质检测结果,得到影响黄龙水化学的主要参数,并与震后的水化学参数进行对比分析,发现:2016年(震前)水质参数显示pH、总磷、总氮对黄龙水质起主要贡献作用,地震后水体的pH、Ca^(2+)和HCO^(-)_(3)含量上升,而总磷含量则下降较多,表明地震对黄龙钙华体内部结构产生了影响,导致上升泉(转花泉)中的Ca^(2+)和HCO^(-)_(3)含量增加,并影响了pH,而震后水体中的总磷含量减少,这可能与游客数量大幅度减少有关;“8∙8”地震对黄龙钙华沉积区水环境造成了影响,并有利于钙华沉积。The deposition of Huanglong travertine needs water which is rich in calcium ions and hydrogen carbonations.The purpose of this study was to determine whether the 2017 Jiuzhaigou earthquake had an impact on the fragile travertine in Huanglong and caused the change of the water environment subsequently.Water samples were collected and tested at three monitoring sites in Huanglong in October 2017 and August 2018,respectively.Based on the principal component analysis of many times of water quality tests before the earthquake,the main parameters affecting the chemistry of Huanglong water were determined,and the main parameters after the earthquake were compared and analyzed.The principal component analysis of water quality parameters in 2016 show that the pH value,total phosphorus and total nitrogen played a major role in the water quality of Huanglong.The pH,Ca^(2+) and HCO^(-)_(3) contents increased,while total phosphorus content decreased after the earthquake.The results show that the earthquake has a little influence on the structure of Huanglong travertine,leading to increase of Ca^(2+) and HCO^(-)_(3) ion content in the rising spring(Zhuanhua spring),and also affected the pH value.The decrease of TP content in the water after the earthquake may be related to the decrease in the number of tourists.The analysis suggests that the earthquake has some effect on the water environment of the sedimentary area of Huanglong travertine and was favorable to the deposition of travertine.

关 键 词：钙华 地震 水化学 黄龙 

分 类 号：X143[环境科学与工程—环境科学]