1The genesis and extension of Kunming geothermal fieldWANG Yu, KANG Xiao-bo, ZHANG Hua, WANG Yan125-1332Dominant factors controlling hydrochemical variation of karst underground river in different period,Qingmuguan,ChongqingYU Qin, YANG Ping-heng, YU Zheng-liang, CHEN Xue-bin, WU Hong134-1433Environmental geochemistry characteristics of heavy metals and ecological risk assessment of surface sediments from Nanshan Laolongdong subterranean river,ChongqingREN Kun, CHEN Zhi-bing, PAN Xiao-dong, ZHANG Mei144-1524Impact of Land-Use and Land-Cover change on the carbon sink produced by karst processes:A reviewZENG Si-bo, JIANG Yong-jun153-1635Proportion of pedogenic carbonates and the impact on carbon sink calculation in karst area with semiarid environmentHUANG Qi-bo, QIN Xiao-qun, LIU Peng-yu, ZHANG Lian-kai, SU Chun-tian164-1726Soil carbonic anhydrase activity,soil organic carbon and their relationships in different geological eco-environments of the Changjiang River basinPAN Wei-zhi, SILA Onesmus Nzung'a, SHEN Tai-ming, LI Wei, WANG Chen-wei, YU Long-jiang173-1787Character of water or barometric pressure jump within karst conduit in large strong drainage area of karst water filling mine in Dachengqiao,Ningxiang,HunanJIANG Xiao-zhen, LEI Ming-tang, GUAN Zhen-de179-1898Analysis on characteristics of karst water gushing under tunnel spatial distribution in ejective fold structure area of southeast SichuanWU Ming-liang, QI Ji-hong, XU Mo, AN Cheng-jiao, LI Xiao, ZHANG Shi-shu, WANG Neng-feng190-1969Preliminary exploration on the critical buried depth of the soil cave in karst areaXIAO Wu-quan197-20110Relationship between mining drainage and karst ground collapseLIN Dan, YOU Sheng-yi, TANG Xiao-ming202-21011Effects of calcium,iron and aluminum fractions on the phosphorus bioavailability in limestone soil of karst regionLIANG Jian-hong, CAO Jian-hua, YANG Hui, HUANG Fen211-21712Application of GIS and RS technologies to the evaluation of natural suitability of human habitation in Qiannan karst areaGUO Xiao-na, SU Wei-ci, LI Qiang, PAN Zhen-zhen218-22513Relationships between biomass of the Juglans regia trees in different stand ages and soil nutrients in karst peak-cluster depressionTAN Qiu-jin, QIN Zhen-shi, HUANG Xi-yun, ZHANG Hao, CHEN Hai-sheng, ZENG Fu-ping, WANG Wen-lin226-23214Comprehensive evaluation and exploitation strategy of tourism resources of Shennonggong in Wannian CountyWU Fa-ming, HE Xiao-qian, LUO Meng-yue233-242 