1Palaeo-tufa from the Liuhuanggou cave 2 in the Ordovician carbonate, North Tarim basin, China:Features and petroleum-geologic significancesZHONG Jianhua, SU Feifei, NI Liangtian, SHAO Zhufu, ZHANG Danfeng, SUN Ningliang, HAO Bing, CHEN Bin, LIU Chuang, LUO Ke1-142Porosity and permeability characteristics of compact Carboniferous limestone in the eastern Qaidam basinMA Longjie, PENG Bo, YU Qingchun15-223Fractal features of development degree of Ordovicia paleokarst in the Ordos basinFU Xunxun, LIU Xinshe, SHAO Xiaozhou, HU Jianling, JIA Li, CHE Yongfa23-314Evaluation and prediction of carbonate karst reservoirs in the Ordovician buried hills beneath the Tarim basin: An example east of the Lungu7 well blockZHANG Qingyu, LIANG Bin, QIN Fengrui, CAO Jianwen, DAN Yong, LI Jingrui32-415Numerical simulation of precipitation impact on fractured karst system evolutionMAO Liang, YU Qingchun, WANG Jingxia, LI Honghui, ZHAO Shuaiwei, JIA Meilan42-486Relationship between north Ji'nan geothermal water and Ji'nan spring water revealed by hydrogeochemical characteristicsSUI Haibo, KANG Fengxin, LI Changsuo, HAN Jianjiang, XING Liting49-587Hydrochemical characteristics and mixing effect in Tongjing hot springs of Chongqing59-668Discussion on karst groundwater migration law under mining conditions in the Yutianbao coalmine of Chongqing67-749Calibration of soil water content of calcareous soil using Time Domain Reflectometry (TDR) method in karst regions75-8010Variation of soil trace elements under peach trees with different planting ages in typical rocky desertification areasMO Biqin, YANG Hui, CAO Jianhua, LYU Quanbiao, ZHU Hao, BAI Bing81-8711Physical model of ground collapse of hourglass type in karst regionLUO Xiaojie, LUO Cheng88-9312Analysis of karst collapse development in Tai'an-Jiuxian water source areaWU Ya'nan94-10013Study on source-sink effect in the process of carbonate rock dissolved by acid rain:An example of typical karst regions in GuangxiSUN Ping'an, LI Xiucun, YU Shi, YUAN Yaqiong, HE Shiyi, WANG Yanxue101-10814Variation of inorganic carbon flux in the middle and downstream of the Lijiang riverHE Ruoxue, SUN Ping'an, HE Shiyi, YU Shi, MO Jianying, QIN Xinxing, ZHANG Taicheng, GUO Yasi, ZHANG Tao109-11815Impact of tourism activities on the cave environment and landscape of calcium carbonate (CaCO3) deposits at Shuijinggong cave, Bama countyZHANG Meiliang, ZHU Xiaoyan, WU Xia, ZHANG Biyuan, PAN Moucheng119-13016Optimization of the lighting system at the Furong cave in ChongqingYANG Xiaoxia, WENG Zifan, XIANG Xu131-138 