Soil organic C fractions at different flooding gradient in the water-level-fluctuating zone of Three Gorges Reservoir Area

摘要：

The change in soil organic C fraction in wetland ecosystem plays an important role in global climate change. The objective of this study was to character the soil carbon fraction in riparian zone of Three Gorges Reservoir. Three hydrologic gradient sites were chose: permanently flooding site (below 145m), seasonal flooding site (145-175m), and never flooding site (above 175m). The results showed that soil organic carbon (OC), and dissolved organic carbon (DOC) decreased gradually, tended to be lowest in the seasonal flooding site, thereafter they increased significantly with the decreasing duration of flooding, whereas soil microbial biomass carbon (MBC) decreased with duration of flooding. The results indicated that hydrology affected differently the soil organic C fractions.

关键词： Water-level-fluctuating Zone OC ROC (Readily oxidizable carbon) DOC MBC

作者: Cao Lei Jia Guo Mei Jia Yan Mei Yu Ji Xin Liao Chang

作者单位: College of Chemistry & Life Science Three Gorges University Yichang 443002, China

会议类型: 国际会议

会议名称: The 2012 International Conference of Agricultural Engineering and Food Engineering(2012年国际农业工程与食品工程学术会议 ICAE 2012)

会议地点: 哈尔滨

会议语种:英文

页码: 283-285

在线出版日期: 2012-06-16（万方平台首次上网日期，不代表论文的发表时间）