1Analysis of chemical substance sources in the groundwater of karst-fissure groundwater system in the Qinglian River,Guangdong Province,ChinaXU Lanfang, NI Zehua, TU Shiliang, JIANG Shoujun, HUANG Wenlong, ZHUANG Zhuohan, YANG Hongyu213-2272Analysis of hydrochemical characteristics and controlling factors of groundwater in the covered karst area of northern GuangzhouWANG Zhongzhong, HU Feiyue, JIA Long, ZHI Bingfa228-2373Study on the migration characteristics of cadmium element in the black shales of the groundwater system in the Guandu River Basin of Wushan areaLIU Yongwang, ZHU Zonglin, LI Hai, KE Qingqing, LUO Bo, LIU Jin, DENG Xinqian, ZHANG Yongwen238-2494Degradation characteristics of limestone from the Qutang Gorge to Wuxia Gorge of the Three Gorges Reservoir areaZHANG Zhongyuan, TAN Lei, ZHAO Peng, YU Shu, BAI Linfeng, ZENG Deqiang, JIN Peng250-2605Research progress on the water-carbon coupling processes at different scales in karst regionsZHANG Jianchun, ZHU Jiang, HE Changde, JIA Zhi, ZHU Lifei, YI Yin, GONG Jiyi261-2736Research on the spatial distribution and risk control of"three forms of nitrogen"in groundwater in an urban area of southwest ChinaHUANG Yancai, JIN Bo, ZENG Mudan, XIANG Gang274-2827Chemical characteristics and genetic mechanism of karst geothermal radon spring in Anjiazhuang,FeichengBAI Xinfei, HU Caiping, SONG Jinyu, YANG Shijiao, QIE Liang, ZHANG Jun, YU Chao, HONG Huanren, WANG Tao, SONG Liang283-299,3398Development characteristics and controlling factors of red-bed karst in the southern section of Longmen Mountain at the edge of Sichuan BasinZHANG Xiaowen, WANG Chuan, YANG Yanna, FAN Shijie, YU Lei, XU Xiaoqing300-3159Distribution characteristics and genesis model of karst collapse in the Huainan area of Anhui ProvinceXU Guangquan, LI Hao, YANG Tingting, ZHANG Haitao, HE Biao316-32710Study on the dynamics response characterstics of covered soil-cave type karst collapse under train vibration environmentSHI Hai, JIA Zhilei, BAI Mingzhou, ZHANG Ye, SUN Zibing328-33911Research on the resolution of cross-hole electromagnetic wave CT method for small karst caves under different working patternsCHEN Fengyi, PAN Jianwei, SONG Hongming, YANG Chen, KUI Yulu340-35012Karst development evaluation based on cross-hole radar tomographyJIA Long, ZHANG Yi, MENG Yan, LI Lujuan, PAN Zongyuan, WU Yuanbin, YIN Renchao351-35813Research on the mechanism and prevention technologies of mud and water inrush disasters in tunnelsQIN Pengfei, ZHAO Yamin, SONG Meng, WANG Wenjing359-36914Seismic response characteristics and reservoir distribution prediction of karst reservoirs in the Yingshan Formation of the Lunguxi blockGUAN Baozhu, LIU Junfeng, YANG Maochuan, YANG Xinying370-38115Geological significance,prediction and application of structural fractures in compact limestone reservoirs of the Taiyuan Formation,the Ordos BasinFU Xunxun, FAN Liyong, PEI Wenchao, ZHAO Xiaohui, SHI Lei, DONG Guodong, WANG Huaichang, LIU Xiaopeng, LU Zixing, YIN Liangliang, GAO Xing, CHEN Juanping382-39716Characteristics of paleokarst processes and reservoir development of the middle Permian Maokou Formation in the Yuanba area,Sichuan BasinJI Shaocong, ZHANG Qingyu, BA Junjie, NIE Guoquan, DONG Hongqi, MO Guochen, ZHANG Meng398-40917Reservoir types and well logging identification of the Sinian Dengying Formation in the Central Sichuan regionZHOU Zheng, HE Hongju, LI Dahua, ZHANG Ye, CHEN Hongkai, WANG Xingzhi, YU Tao, HE Li, SU Huan410-41818Characteristics and dominant controlling factors of karst reservoirs in the middle Permian Maokou Formation of the eastern Sichuan regionYANG Rong, YANG Xiyan, FAN Cunhui, LI Yang, LI Yue, HUANG Zisang419-43319Comprehensive comparison and development strategy suggestions between the edge and interior of the fourth section of the Sinian series lamps in the Gaoshiti blockHU Hao, WANG Min, LONG Hui, JIANG Lin, SHEN Qiuyuan, WU Dong, TIAN Xingwang434-444 