Determination of Initial Denitrification in Intact Cores under Various Freshwater Wetland Types

Dong-Cheol Seo, R.D. Delaune, Robert R. Lane, John W. Day
2012 Korean Journal of Soil Science and Fertilizer  
Denitrification rate was determined for various freshwater wetland types in the Mississippi River Coastal delta plain. Site 1 and 4 were collected from forested-tupelo dominated wetland, and site 2 and 3 were from floating emergent marsh. The maximum N 2 O emission was 7.47 mg N m -2 for site 1 at day 6 after the addition of nitrate, 6.96 mg N m -2 for site 2 at day 4, 6.63 mg N m -2 for site 3 at day 3, and 9.64 mg N m -2 for site 4 at day 4. The denitrification rate was determined using the
more » ... etylene inhibition method 1.24 mg N m -2 d -1 for site 1, 1.93 mg N m -2 d -1 for site 2, 2.24 mg N m -2 d -1 for site 3, and 2.78 mg N m -2 d -1 for site 4. The maximum denitrification rate was in the order of site 4 > site 3 > site 2 > site 1.
doi:10.7745/kjssf.2012.45.1.020 fatcat:ak4leos2wfh3dnag36tx66ryne