摘要
THE stable carbon isotopic composition of soil organic carbon is a powerful tool for discussing the source ofsoil CO<sub>2</sub> and the relationship of CO<sub>2</sub> source and sink between soil CO<sub>2</sub> and atmosphere CO<sub>2</sub> and has beenwidely studied. However, few similar researches have been done in karst area which comprises 15%global terrestrial area. Preliminary research results about the stable carbon isotopic composition of soil organic carbon in karst area are reported here. In April and August 1998, the samples were collected continuously at 5-cm intervals from 0 to -45cm depth in meadow soil profile described by Zheng and located in the Hongfong Lake area in the central Guizhou Plateau which lies in the central East-Asia karst area. CO<sub>2</sub> for δ<sup>13</sup> C analysis was prepared
作者
ZHENG Leping~(1,2), LI Tingyu~2, WAN Guojiang~2, WANG Shijie~2 and OUYANG Ziyuan~2 1. Department of Environmental Science and Engineering, Shanghai University, Shanghai 200072, China
2. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
