1Thinking and practice on the research direction of karst water in northern ChinaLIANG Yongping, SHEN Haoyong, ZHAO Chunhong, WANG Zhiheng, TANG Chunlei, ZHAO Yi, XIE Hao, SHI Weizhi363-3802Distribution of soluble rock strata and development of karst landforms in the Batang area, west Sichuan plateauKANG Xiaobing, YANG Sifu, GUAN Zhende, ZHANG Wenfa, XU Mo381-3883Distribution, genesis and age of travertine at Hongshan, Jiexiu, Shanxi ProvinceWEI Rongzhu, HAN Ying, XU Qinmian, WEI Yunfeng, DU Yanwei, FAN Junhui389-3974Hydrochemical characteristics and genesis of karst groundwater in the Baiquan spring catchmentWANG Rui, LI Xiaohan398-4085Characteristics, formation models and water cycle differences of ten major spring groups in Jinan CitySUN Bin, XING Liting, PENG Yuming, LI Changsuo409-4196Dynamic characteristics and influence factors of discharge of the Longzici karst spring in Shanxi ProvinceWANG Dawei, QIAO Xiaojuan, GAO Bo, JIA Xiaojun420-4297Relationship between the surface water system structure and the flood peak in the Xiangxi river karst basinFAN Wei, CHEN Zhihua, NIU Junqiang, LI Wei, WANG Liang, HUANG He430-4388Causes of drought and models of drilling wells for water exploration in the Gexiang river basin of the Wumeng mountainsCAO Jianwen, ZHAO Liangjie, WANG Zhe, LUAN Song, ZHANG Qingyu, YI Rui439-4489Spatial estimation model and migration analysis of soil total calcium content in the Maolan karst area, Guizhou ProvinceYANG Shengtian, LI Xi, LOU Hezhen, LUO Ya, LI Chaojun, WANG Pengfei, WU Xijin, ZHANG Jun449-45810Response traits of the chlorophyll a fluorescence to saturation and subsequent continuous dehydration in five karst plantsXING Deke, YU Rui, CHEN Lu, WU Yanyou, ZHAO Yuguo, LI Lin, FU Weiguo459-46511Relationship between surface soil pollen and modern vegetation in karst trough area of Zhongliang mountain, Chongqing City, SW ChinaWANG Qirong, JIANG Yongjun, HAO Xiudong, MA Lina, ZHANG Caiyun, QIN Linjuan, ZHENG Yang, QIU Hua466-47512Temporal and spatial differentiation of the ecosystem service value in typical fault-depression basinsLIANG Jintao, DENG Yan, CAO Jianhua, JIN Zhenjiang, LI Xuyao476-48613Photosynthetic characteristics of Broussonetia papyrifera and Morus alba under rock outcrop habitat in karst areaLI Huan, WU Yanyou, WU Yansheng487-49414Pollution characteristics and risk assessment of heavy metals in soils along the upper reaches of the Duliu riverZHANG Guangying, WU Linna, OUYANG Kunchang, WU Pan495-50315Influence of geological and geomorphologic features on karst rocky desertification in northwestern Hunan Province:A case study of Zhangjiajie CityGONG Shuhua, ZHU Lifen504-51216Response of cave air and hydrogeochemistry of drip water to local climate in the Liangfeng cave ,Guilin CityWU Xia, PAN Moucheng, YIN Jianjun, WANG Zhijun, ZHU Xiaoyan, YANG Hui, ZHANG Meiliang, CAO Jianhua513-52017Seasonal variations and sources of dripping CO2 in karst caves:A case study of the Dafeng cave, Guizhou ProvinceTANG Yuntao, ZHOU Zhongfa, WANG Yanlin, ZHANG Jie, TIAN Zhonghui, XUE Bingqing521-53018Study on the developmental characteristics and mechanism of ectopic stone flower at Duoleyuan karst caves in YunnanWU Guangfeng, WANG Jiaxue, YANG Li531-53819Features of geological relics and genesis of the Chanjiayan Tiankeng group in Ningqiang, Shaanxi ProvinceREN Juangang, HONG Zenglin, ZHANG Jing, TANG Li, LIU Xiaofeng, QIN Zhen, WANG Peng, WANG Yan539-54720Construction of a karst knowledge discovery system based on knowledge graphYANG Chen, BI Benteng, ZHOU Lixin548-554 