1Calculation of atmospheric CO2 sink formed in karst progresses of the karst divided regions in ChinaJIANG Zhong-cheng, QIN XIAO-qun, CAO Jian-hua, HANG Xiao-zhen, HE Shi-yi, LUO Wei-qun363-3672Time-scale of karst processes and the carbon sink stabilityZHANG Cheng368-3713Influence of land covers on carbon sink of underground river:A case in the Dagouhe Basin in GuangxiQIN Xiao-qun, MENG Rong-guo, MO Ri-sheng372-3784“Method of maximum potential dissolution” to calculate the intensity of karst process and the relevant carbon sink:With discussions on methods of solute load and carbonate-rock-tablet testLIU Zai-hua379-3825Spatial-temporal dynamic features and tendency of the topsoil organic carbon in integrated rehabilitating karst rocky desertXIONG Kang-ning, ZHOU Wen-long, LONG Jian, LUO Jing-sheng383-3906Preliminary study on the biomass and the carbon storage in karst grassland in Liujiang Basin, GuangxiHOU Man-fu, HUANG Wei-chuan, QIN Xiao-qun391-3967Change of dissolved inorganic carbon(DIC) in karst peak cluster during natural restoration :A case study in Yaji StationJIANG Guang-hui, ZHANG Qiang397-4028Study on carbon sink effect in typical sub-tropical karst water systemGUO Fang, JIANG Guang-hui, KANG Zhi-qiang403-4099Comparison of mineralization and chemical structure of the soil organic carbon under different land uses in Maocun karst area, GuilinYANG Hui, ZHANG Lian-kai, CAO Jian-hua, YU Shi410-41610The influence of allogenic water on karst carbon sink:A case study in the Maocun Subterranean River in Guilin, ChinaHUANG Fen, TANG Wei, WANG Jin-liang, CAO Jian-hua, YIN Jian-jun417-42111Spatial correlation analysis on soil organic carbon and the influencing factors in the Xiangxi River BasinSHI Ting-ting, CHEN Zhi-hua, WANG Ning-tao, JIN Xiao-wen422-43112Degasification of the outcropped epikarst water:A case study on the Baishuwan Spring in Nanchuan,ChongqingZHOU Xiao-ping, SHEN Li-cheng, WANG Peng, XU Shang-quan, LIN Ming-zhu432-43613The characteristics of karst carbon sink in the Guijiang CatchmentHUANG Qi-bo, LIU Peng-yu, QIN Xiao-qun, KONG Xiang-sheng437-44214Seasonal changes of soil dissolution rate and estimations on carbon sequestration in the subalpine epikarst spring zone:A case study in the Shuifang Spring in Jinfoshan, ChongqingLUO Jian, JIANG Yong-jun, HU Yi-jun, LI Lin-li, LIU Wen443-44815Impact on soil CO2 concentration by the changes of land use and vegetation cover in karst areaLAN Fu-ning, WANG Wen-juan, QIN Xiao-qun, HUANG Qi-bo, LIU Peng-yu, An SHU-qing, TANG Shao-Zheng449-45516The regolith effect on carbon transfer path in epi-karst systemKANG Zhi-qiang, HE Shi-yi456-46017Strategies to increase carbon fixation and sequestration by karst-adaptable plantsWU Yan-you461-46518Influence of root-secreted organic acid on plant and soil carbon sequestration in karst ecosystemZHAO Kuan, WU Yan-you466-47119Study on the kinetics of extracting chrysotile with ammonium chlorideGAO Xiong, MENG Ye, ZHU Chen, ZHAO Liang472-47820Contrastive studies on different interpolation methods in soil carbon storage calculation in Da'an City, Jilin ProvinceWANG Yuan-yuan, YANG Zhong-fang, YU Tao, WEN Yu-bo, XIA Xue-qi, BAI Rong-jie479-486 