1、Soil Biology and Biochemistry Volume 31, Issue 12, October 1999, Pages 1609-1624 Riparian soil response to surface nitrogen input: temporal changes in denitrification, labile and microbial C and N pools, and bacterial and fungal respiration Christien H. Ettema1, a, Richard Lowranceb and David C. Colemana 2、Ecological Engineering Volume 19, Issue 4, October 2002, Pages 249-264 Fate of 15N-nitrate in unplanted, planted and harvested riparian wetland soil microcosms F. E. Matheson, , a, b, M. L. Nguyena, A. B. Coopera, T. P. Burtb and D. C. Bulla, 1