1Perspectives on karst biogeochemistryLI Qiang, JIN Zhen-jiang349-3562Stable carbon isotope fractionation (δ13C) of microalgae on CO2 assimilationZHAO Li-hua, WU Yan-you, XIE Teng-xiang, LI Hai-tao, ZHANG Kai-yan, HANG Hong-tao357-3623Computation of fracture water flow based on discrete fracture network modelWANG Jin-li, CHEN Xi, ZHANG Zhi-cai, KANG Jian-rong, GAO Man363-3714Exploration of risk assessment method towards groundwater contamination in karst region: A case study in Disu underground river system basinCUI Ya-feng, HE Jiang-tao, WANG Man-li, ZHAO Yue-kun, WANG Fei372-3835Time lags variance of groundwater level response to precipitation of Jinan karst spring watershed in recent 50 yearsQI Xiao-fan, WANG Yu-shan, YANG Li-zhi, LIU Zhong-ye, WANG Wei, LI Wen-peng384-3936The characteristics of karst cave ancient floodplain sediment and environment evolution: A case study in Shanwang caveYANG Zhen-hua, LI Po, WU Ke-hua394-4017Discoveries of Ailuropoda-Stegodon Fauna from Shuanghe CaveGAO Zhan-dong, Jean Bottazzi, ZHAO Xin-nan, HE Wei, Eric Sanson, LI Po, CHENG Hai402-4068Characteristicts of geological heritages, adventure tourism and speleotherapy tourism of Hongguoshu area in Suiyang, GuizhouLI You-wei, SHI Xiao-zhi, HE Wei, LI Po407-4139Analysis on the relationship between climatic and environmental factors in karst caves: An example from Zhijin Cave of Guizhou ProvinceYIN Chao, ZHOU Zhong-fa, CAO Ming-da, ZHANG Jie, ZHANG Qiang, ZHANG Shao-yun, PAN Yan-xi414-42410Characteristics of spatial temporal variation of air environment in tourism cave and its cause analysis: A case study of the Dafeng cave in Suiyang county, Guizhou ProvincePAN Yan-xi, ZHOU Zhong-fa, LI Po, CAO Ming-da, ZHANG Shao-yun, YIN Chao, ZHANG Jie425-43111Morphological comparison and analysis of the causes of pothole formation in karst cave: An example from Shuanghe Cave of Guizhou ProvinceZHANG Jie, ZHOU Zhong-fa, LI Po, CAO Ming-da, YIN Chao, ZHANG Shao-yun, ZHANG Qiang432-43812Effects of different land use and soil type on the migration of heavy metals in a pyrite smelting areaHONG Tao, XIE Yun-qiu, ZHAO Yi, Yang Li-chao439-44513Study on the dynamic change of soil moisture in karst area:A case of Huaxi district in Guiyang CityYAN Meng-meng, ZHOU Zhou, WANG Ji, GU Xiao-ping, XIAO Jian-yong446-45214The coupling relationship between sustainable use of land and harmonious development of ecological environment of Chongqing from 1999 to 2013LUN Dan, ZHOU Wen-zuo, SU Wei-ci453-45915@@后插1 