Pedosphere 3(2): 97--106, 1993
ISSN 1002-0160/CN 32-1315/P
©1993 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Mineralization and Transformation of Nitrogen Derived from Plant Materials in Soils over 10 Years |
| CHENG LI-LI, WEN QI-XIAO |
| Department of Soil Biochemistry, Institute of Soil Science, Academia Sinica, P.O. Box 821, Nanjing 210008 |
| ABSTRACT |
| Results of a 10-year decomposition experiment indicated that the annual mineralization rate of organic N in newly-formed humus varied with the type of original plant materials and the water regimes for decomposition, ranging from 0.028 to 0.074. The mineralization rate under waterlogged conditions was higher than that under upland conditions. The proportion of α-amino acid N in humus newly-formed under waterlogged conditions was slightly higher than that under upland conditions. It decreased gradually with time, while the proportion of nonhydrolyzable N showed no consistent trend, irrespective of the water regimes for decomposition. |
| Key Words: |
| Citation: Cheng, L. L. and Wen, Q. X. 1993. Mineralization and Transformation of Nitrogen Derived from Plant Materials in Soils over 10 Years. Pedosphere. 3(2): 97-106. |
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