Pedosphere 13(4): 337--344, 2003
ISSN 1002-0160/CN 32-1315/P
©2003 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Effects of Fe and Mn in paddy soils derived from different parent materials on methane production and emission |
LIU Ke-Xing1 , LIAO Zong-Wen1, WANG Sheng-Chun1 and YOU Zhi-Lin |
| College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642 (China). E-mail: kxliu@scau.edu.cn |
| ABSTRACT |
| Three types of paddy soils, derived from granite, Quaternary red clay and basalt, respectively, were selected to study the effects of Fe and Mn in paddy soils on methane production and emission through pot and incubation experiments. The results indicated that the difference of Fe and Mn in paddy soils was one of the important factors causing obvious differences in methane emission from different soil types. Soil Fe and Mn affecting methane emission from the paddy soils was likely through affecting soil Eh and forming Fe and Mn plaques on rice roots. Different rates and valences of added Fe and Mn significantly affected methane production from paddy soils. Therefore, this study enhanced understanding of processes controlling methane emission from paddy soils and may help to improve modeling and estimating regional and global methane emission from paddy soils. |
| Key Words: Fe, methane emission, methane production, Mn, paddy soil |
| Citation: Liu, K. X., Liao, Z. W., Wang, S. C. and You, Z. L. 2003. Effects of Fe and Mn in paddy soils derived from different parent materials on methane production and emission. Pedosphere. 13(4): 337-344. |
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