1Experiment of monitoring multi-layer groundwater at a karst hill slope and its scientific significanceGUO Fang, JIANG Guanghui, LIU Fan, LI Zhijie491-4992Spectral characteristics and indication of dissolved organic matter in the karst water system of JinanLIU Dan, TIAN Chanjuan, CHEN Xuequn, XU Dandan, GUAN Qinghua, XIN Guangming500-5123Evaluation of groundwater pollution risk based on the optimized DRASTIC model:A case study of the areas along the route of South-to-North Water Diversion Project in Shandong ProvinceLIU Hong, ZHANG Jun, YU Sang, ZHANG Li, CHEN Hao, LU Xiaowei, QIAO Yue513-5264Hydrochemical characteristics and genetic analysis of the Xianju basin in southern Zhejiang ProvinceZHOU Shiyang, DONG Haogang, LI Lixiang, YUAN Dongfang, LU Li, YAO Feiyan, XIANG Fan, CHEN Lin, WANG Zhenwei, WU Xin527-5375Geochemical characteristics of spring water in Baishuitai of Yunnan and their indicative significance on climatic environmentZHAO Xi, XU Hongyang, GAN Hailing, YE Aihua, ZHOU Limin, ZHENG Xiangmin538-5516Records of glacier activities by the alpine travertine landform in the Yulongxi area along Gongga mountainCHAI Peiran, ZHAO Xueqin, WANG Fudong, JIANG Yaoxi, ZHANG Qiang, ZHU Heyan552-562,5847Research progress of nitrate tracing in karst groundwater based on CiteSpaceYANG Pingheng, HUA Maosong, LUO Weiqun, GUO Wenjing563-5748Characteristics of travertine profiles and their environmental indications in Munigou,Sichuan,ChinaHE Jingwen, DAI Qunwei, XU Ronglin, CUI Jie, AN Dejun, DU Weiqi, ZHANG Ting, JIANG Ruiyang, RAN Yue575-5849Influence of different data types and dimension reduction on the recognition accuracy of travertine hyperspectral imagesXU Menghui, WANG Weihong, TIAN Shuojuan, ZI Yingkun, WU Zhouhang, WANG Xiaomeng, XIANG Hongyao, FAN Jing585-59410Technology of classifying lithology of typical karst areas based on machine learning:Taking the Pingguo area,Guangxi as an exampleDU Wei, MENG Xiaoqian, TU Jienan, LIU Song, HU Wei, ZHANG Yiming, DAI Yuanyuan, WU Yang606-61611Study on land use change of Dajiu lake and its impact on ecological environment in the last 60 yearsMENG Xiaojun, YUAN Jingjing, SUN Xinyue, HUANG Wei, AI Dong, SHEN Lulu, MENG Yuling617-626,64912Hydrological characteristics of dripping water in karst caves under different land coversFAN Hongdai, HU Yundi, ZHOU Zhongfa, HU Deyong, ZHANG Yuchao, HUANG Zhengzhou, WANG Dengchao, SHANG Yun, LI Hang627-63913Characteristics of soil carbon,nitrogen and their components under different vegetation types in the karst reservoir area:A case study of Huaxi reservoir in GuiyangZHOU Wei, JIANG Xia, YAO Shiju, ZHANG Yan640-64914Heavy metal pollution of soil and its ecological risk evaluation in the phosphate mining area in central GuizhouJIANG Feng, LI Qiang, GAO Feng, JIQIN kebuzi, LIU Hanwu, WANG Ruofan650-66015Zoning of ecological treatment in typical karst areas based on ecosystem vulnerability assessmentHU Zhaoxin, LUO Weiqun, JIANG Zhongcheng, WU Zeyan, TANG Qingjia661-671,70316Extraction of land use information in karst areas based on Sentinel-2 imagesLONG Ziwei, WANG Hong, JIA Yu, WU Yongjun, PENG Junjie672-68317Differences of carbon and oxygen isotopes in coarse-grained calcite from the Permian Maokou Formation in different regions of Sichuan Basin and their significance in paleokarst environmentGAO Zhaolong, DAN Yong, ZHANG Xihua, CAO Hua, DENG Min, CHEN Cong, HU Luojia684-69318Relationship between sedimentation and red karst landform during the Ordovician in Hunan,Chongqing and GuizhouCHEN Youzhi, JIANG Fuwei, CHEN Ying, YANG Guilai, YU Ning, SU Xiaoliang694-70319Influence of multiple karst caves at the pile end on the bearing capacity of pile foundations based on ABAQUSGUO Bin, YIN Ou, CHEN Xian, LIU Qinghua704-71620Stability analysis of karst tunnel surrounding rock considering spatiotemporal effectsWANG Kaixiang, WANG Xiaotao, GONG Liang, HUANG Dan717-726 