CHENG Jianzhong, LI Xinqing, TANG Yuan, ZHOU Zhihong, WANG Bing, CHENG Hongguang, XING Ying. Variations and affecting factors of volume fractions of CO2 in soils between different land use in Guizhou Karst region of China[J]. Ecology and Environment, 2010, 19(11): 2551-2557.