1Study on watershed boundary division for unified evaluation of surface water and groundwater resources and environment in karst areasWANG Yu823-8302Numerical simulation method for the karst development of carbonate fracture networks with both laminar and turbulent flowGAO Yang, QIU Zhenzhong, YU Qingchun831-8383Numerical simulation for the evolution of covered karst fissure system between riversWU Yazun, CEN Lei, LIN Yun, QU Pengchong, WANG Zijie839-8454Analysis of dynamic change and reason of water resource security in karst areas using the set pair method:An example of Guizhou ProvinceZHENG Qunwei, SU Weici, YANG Zhenhua, ZHOU Feng846-8575Hydrogeochemical zoning characteristics of the strontium mineral spring in Xintian county, Hunan ProvinceZHAO Guangshuai, SU Chuntian, PAN Xiaodong, XIE Daixing, LUO Fei, YANG Yang, BA Junjie, LI Xiaopan, BI Benteng858-8666Chemical characteristics and environmental significance of SO42- and sulfur isotope in the karst watershed of the Niangziguan spring,Shanxi ProvinceZHAO Chunhong, LIANG Yongping, LU Haiping, TANG Chunlei, SHEN Haoyong, WANG Zhiheng867-8757Characteristics of the Cambrian-Ordovician karst water system in the northeastern Datong coalfieldCHEN Yazhou, REN Hujun, LI Xibin, LI Jian, WANG Fengli876-8828Remote sensing investigation to the distribution and change of karst rocky desertification from 2003 to 2015 in the Nayong area of Guizhou based on Landsat-X GEVIKUANG Zhong, BAO Ping, WU Kaibin, JIANG Kaiyuan883-888,9159Characteristics of calcium fraction distribution in soil under different land use types in karst fault-depression basinsLI Jing, YANG Cheng, JIN Zhenjiang, ZHU Tongbin, CAO Jianhua889-89510Fuzzy evaluation of mitigating soil and water loss by cultivation of medicinal plants in karst mountainous areasLUO Lin, ZHOU Yingshu, BI Ning, CHEN Kunhao896-90011Effect of alternating wetting-drying on physiological features of water content and photosynthesis of Erythrodontium julaceum (Schwaegr.) Par. in karst habitatZHANG Xianqiang, LIU Tianlei, CONG Chunlei901-90912Principles and methods for preventing and controlling the hourglass-type karst ground collapseLIANG Ligang, CHEN Liang, LIU Jianfang910-91513Discussion on lining strength of railway tunnels in karst areas under instantaneous heavy rainfall:An example of the Yuanbaoshan tunnel of Zhijin-Bijie railway in Guizhou ProvinceYU Hongzhang916-92314Safe pumping in areas prone to karst collapses:A case study of the urban emergency water source of the Guanghua basin in the Pearl River DeltaMENG Yan, ZHENG Xiaozhan, QI Shihua, LEI Mingtang, LI Zhuojun, JIA Long924-92915Effect of moisture content and dry density on shear strength of Guilin red clayCHEN Jiayu, LIU Zhikui930-93616Checklist, distribution and conservation of typical cavefish in ChinaZHANG Peiling, HUANG Taifu, WU Tao, HUAND Xinlong, ZHANG Youxiang, LIU Zhixiao937-94517Characteristics and value of geological relics in the Bijie Jiming Sansheng·Guizhou geoparkLUO Shuwen, YANG Tao, DENG Yadong, QIN Xingming946-95618Study on tourism images of karst caves based on web text analysis:An example of the Zhijin cave in Guizhou ProvinceHE Xiaoqian, XIE Jia, ZHANG Yanrong957-96619Spatial distribution characteristics and the geomorphological evolution process of the Jiudongtian cave system in Guizhou ProvinceAN Dan, ZHOU Zhongfa, XUE Bingqing, YANG Enlin, FAN Baoxiang, ZHU Cancan967-97620Study on the human living environment in Guilin City since the upper palaeolithicYIN Jianjun, LIN Yushi, TANG Wei, RUAN Jiaoyang977-982 