T. E. Jordan, D. L. Correll, and D. E. Weller, Nutrient intercep- Dé camps Geomorphic control of denitrification in large river floodplain soils, Biogeochemistry, vol.30, pp.9-29, 1993.

G. Pinay, L. Roques, A. F. Keeney, D. R. , and D. W. Nelson, Spatial and temporal patterns of denitrification in a riparian forest Nitrogen?Inorganic forms Methods of soil analysis, J. Appl. Ecol, vol.30, pp.643-698, 1982.

G. Pinay, C. Ruffinoni, and A. Fabre, Nitrogen cycling in two 2, 1995.

B. A. Kliewer and J. W. Gilliam, Water table management efriparian forest soils under different geomorphic conditions, Biogeochemistry, vol.4, pp.1-21, 1995.

L. A. Schipper, A. B. Cooper, C. G. Harfoot, and W. J. Dyck, Regulators of denitrification in an organic riparian soil, Soil Biology and Biochemistry, vol.25, issue.7, 1993.
DOI : 10.1016/0038-0717(93)90095-S

R. R. Schnabel, Denitrification distributions in four valley and trifyers and denitrifying activity in size fractions of a mollisol under permanent pasture and continuous cultivation, Soil Biol. Bioridge riparian ecosystems. Environ. Manage, vol.21, pp.283-290, 1997.

J. Luo, R. W. Tillman, and P. R. Ball, Factors regulating denitrifi- Denitrification in a grassed and a wooded, valley and ridge, riparian ecotone, J. Environ. Qual, vol.25, pp.1230-1235, 1999.

J. Lyons, S. W. Trimble, L. K. Paine, A. J. Sextone, N. P. Revsbech et al., Grass versus trees Direct measurement of oxygen profiles and denitrification rates in Managing riparian areas to benefit streams of central north america, J. Am. Water Resour. Assoc. Soil Sci. Soc. Am. J, vol.36, issue.49, pp.919-930645, 1985.

M. S. Smith, J. M. Tiedje-mcclain, M. E. , J. E. Richey, and T. P. Pimentel, Phases of denitrification following oxygen depletion in soil, Soil Biology and Biochemistry, vol.11, issue.3, pp.261-267, 1979.
DOI : 10.1016/0038-0717(79)90071-3

L. Solorzano, Determination of ammonium in natural waters ment in the central Amazon basin, Biogeochemistry, vol.27, pp.113-127, 1969.

B. Mogge, E. A. Kaiser, and J. C. Munch, Nitrous oxide emissions by the phenolhypochlorite method, Limnol. Oceanogr, vol.14, pp.799-801, 1999.

R. C. Starr and R. W. Gillham, Denitrification and Organic Carbon Availability in Two Aquifers, Ground Water, vol.45, issue.3, pp.934-947, 1993.
DOI : 10.1021/es00172a014

S. Soft, Statistica for Windows. Version 5.5, Stat Soft, 1999.

E. Montgomery, M. S. Coyne, G. W. Thomas-stewart, M. D. , P. D. Bates et al., Modelling the spatial variability in floodplain soil contamination during flood can cause variable NO 3 concentrations in shallow groundwater, 1996.

R. J. Naiman and H. Decamps, THE ECOLOGY OF INTERFACES:Riparian Zones, Annual Review of Ecology and Systematics, vol.28, issue.1, pp.621-658, 1997.
DOI : 10.1146/annurev.ecolsys.28.1.621

. Technicon, Nitrate and nitrite in water and sea water. Industrial Method 158-71 WIA, 1977.

W. M. Nelson, A. J. Gold, and P. M. Groffman, Spatial and Temporal Variation in Groundwater Nitrate Removal in a Riparian Forest, Journal of Environment Quality, vol.24, issue.4, 1995.
DOI : 10.2134/jeq1995.00472425002400040021x

J. M. Tiedje, Ecology of denitrification and dissimilatory nitrate reduction to ammonium, pp.179-244, 1988.

L. L. Osborne and D. A. Kovacic, Riparian vegetated buffer ogy of anaerobic microorganisms, 1993.

H. M. Walter, D. R. Keeney, and I. R. Fillery, Inhibition of nitrifistrips in water quality restoration and stream management, Freshwater Biol. Soil Sci. Soc. Am. J, vol.29, issue.43, pp.243-258195, 1979.

K. L. Weier, I. C. Mcrae, R. J. Myers-parkin, T. B. Parry, S. et al., Soil microsites as a source of denitrification variability a clay soil under permanent pasture and annual crop: Estimation of potential losses using intact soil cores, Denitrification in pasture and cropped soil clods as affected by pore space structure, pp.1194-1199, 1987.

S. Wenger, A review of the scientific literature on riparian, Soil Biol. Biochem, vol.31, pp.493-501, 1999.

J. Pastor, M. A. Stillwell, and D. Tilman, Nitrogen mineralization and nitrification in four Minnesota old fields, and nitrification in four Minnesota old fields, pp.481-485, 1987.
DOI : 10.1016/B978-0-444-42179-1.50061-4

E. A. Paul, F. E. Clark-wood, E. D. , F. A. Armstrong, and F. A. Richards, Soil microbiology and biochemistry Determination of nitrate in seawater by cadmium-reduction to nitrite, J. Mar, 1967.

W. T. Peterjohn and D. L. , Nutrient dynamics in an, Biol. Assoc. U.K, vol.47, pp.23-31, 1984.

T. Yoshinari and R. Knowles, Acetylene inhibition of nitrous agricultural watershed: Observations on the role of a riparian forest oxide reduction by denitrifying bacteria, Ecology Biochem. Biophys. Res. Communic, vol.65, issue.69, pp.1466-1475705, 1976.