1Drought causes and restoration measures for Jiulongchi spring group within Cuihu lake,KunmingWANG Yu, HE Rao-sheng, LIU Hai-feng, WANG Zi-wei, YAN Xiang-sheng, SHUANG Ling, PENG Shu-hui263-2712Boundary condition,water cycle and water environment changes in the Jinan spring regionSUN Bin, PENG Yu-ming272-2793Application of the numerical simulation method in concealed karst wellhead for protection area delimitation and contamination preventionLI Xing-yu, NAN Tian, WANG Xin-juan, LI Peng, XIE Zhen-hua, SHAO Jing-li280-2874The relationship between karst formation and geological disasters in Qingjiang river basin,western Hubei ProvinceCHANG Hong, ZHANG Yu, LI Jing-fu, TAN Jian-min, HAN Hui-qing288-2935Evolution and numerical simulation of a karst soil caveJIA Long, MENG Yan, GUAN Zhen-de294-2986Formation conditions and mechanisms of karst subsidence:A case study of Huangzhuang village in TangshanLI Yan-gui, LIU Zi-long, YU Xiao-min, LUO Shui-yu, YONG Fan, JIANG Zheng-zhong299-3077Evaluation of ecological security in the Wujiang river basin using remote sensing and GIS technologiesYI Wu-ying, SU Wei-ci308-3188Spatial heterogeneity of soil nutrients and pH in tobacco area based on geostatistics:A case study in a karst area of Youyang county,ChongqingLIU Yue-jiao, ZHANG Yang, NI Jiu-pai, ZHOU Chuan319-3259Spatial patterns and factors impacting settlements in Hongfeng lake watershedWANG Fa-yan, LI Yang-bing326-33710Factors affecting household behavior to control rocky desertification based on Logistic-ISM model in karst area:A case study in Guizhou ProvinceYU Shuang, LI Guang338-34611Comprehensive evaluation of soil fertility in karst area by GIS and improved Grey Relation Model:A case study in Fengdu county karst area,ChongqingSUN Yu, GAO Ming, WANG Dan, DENG Wei, CHEN Cheng-Long347-35512Study of simulated soil erosion on a bare karst slopeLIU Zheng-tang, DAI Quan-hou, YANG Zhi356-36213Seasonal temperature changes in Shennonggong and Xianglong caves and their potential impact on oxygen isotope composition of stalagmite carbonateZHANG He-qiao, CAI Yan-jun, ZHANG Hai-wei, TAN Liang-cheng, QIN Shi-jiang363-37214Karst landforms and reservoir characteristics in the Ordovician strata of Lungu 7,Tabei upliftZHANG Qing-yu, QIN Feng-rui, LIANG Bin, CAO Jian-wen, DAN Yong, LI Jing-rui373-37815Review of foreign research on speleotherapyLI Xi, YANG Xiao-xia, XIANG Xu, SHI Ding-fang379-385 