Estimating Nitrogen and Phosphorus Contents Using Model Integrated in Small Agricultural Watersheds

References

• Beegle , D.B. , Carton , O.T. and Bailey , J.S. 2000 . Nutrient management planning: justification, theory, practice . J. Envrion. Qual. , 29 : 72 – 79 .
   Web of Science ®Google Scholar
• Sharpley , A.N. , Smith , S.J. and Nancy , J.W. 1987 . The environmental impact of agricultural nitrogen and phosphorus use . J. Agric. Food Chem. , 36 : 812 – 817 .
   Web of Science ®Google Scholar
• Chung , J.B. , Kim , M.K. , Kim , B.J. and Park , W.C. 1999 . Nitrogen, phosphorus, and organic carbon discharges in the Imgo small agricultural watershed catchment . Kor. J. Environ. Agric. , 18 ( 1 ) : 70 – 76 .
   Google Scholar
• Chung , J.B. , Kim , M.K. and Kim , B.J. 2000 . Surface runoff loss of nitrogen and phosphorus from peach orchard . J. Korean Soc. Agric. Chem. Biotechnol. , 43 ( 2 ) : 124 – 129 .
   Google Scholar
• Rode , M. and Frede , H.G. 1997 . Modification of AGNPS for agricultural land and climate conditions in central Germany . J. Environ. Qual. , 26 : 165 – 172 . [CSA]
   Web of Science ®Google Scholar
• Young , R.A. , Onstad , C.A. , Bosch , D.D. and Anderson , W.P. 1989 . AGNPS: a nonpoint-source pollution model for evaluating agricultural watersheds . J. Soil & Water Conserv. , 44 ( 2 ) : 168 – 173 . [CSA]
   Web of Science ®Google Scholar
• Young , R.A. , Onstad , C.A. , Bosch , D.D. and Anderson , W.P. 1994 . “ Agricultural nonpoint source pollution model ” . In AGNPS User's Guide
   Google Scholar
• Tim , U.S. , Mostaghimi , S. and Shanholtz , V.O. 1992 . Identification of critical nonpoint pollution source areas using geographic information systems and water quality modeling . Water Resour. Bull. , 28 ( 8 ) : 877 – 887 .
   Google Scholar
• Rode , M. , Grunwald , S. and Frese , H.G. 1995 . Mrthodik zur GIS-gestuetzten Berechnung von Naehrstoffeintraegen in Fliessgewaesser durch Oberflaechenabfluß mit dem Modell AGPNS (Modeling of water quality using AGNPS and GIS) . J. Rural Eng. & Develop. , 36 : 63 – 68 .
   Google Scholar
• Grunwald , S. , Haverkamp , S. , Mach , M. and Frede , H.G. 1997 . Ueberpruefung von MEKA-Massnahmen zum Erosions-und Gewaesserschutz durch das Modell AGPNSm (Assessment of MEKA subsidies for soil and water protection by AGNPSm) . J. Rural Eng. & Develop. , 38 ( 6 ) : 260 – 265 .
   Google Scholar
• Bremmner , J.M. and Mulvancy , C.S. 1982 . “ Nitrogen-total ” . In Methods of Soil Analysis, , Part 2, 2nd Ed. Edited by: Page , A.L. 595 – 624 . Madison, WI : ASA and SSSA . Agron. Monogr. 9
   Google Scholar
• Olsen , S.R. and Sommers , L.E. 1982 . “ Phosphorus ” . In Methods of Soil Analysis, , Part 2, 2nd Ed. Edited by: Page , A.L. 403 – 430 . Madison, WI, , USA : ASA and SSSA . Agron. Monogr. 9
   Google Scholar
• McCuen , H. 1981 . A Guide to Hydrologic Analysis Using SCS Methods Englewood Cliffs, NJ : Prentice-Hall .
   Google Scholar
• Knisel , W.G. CREAMS: A Field-Scale Model for Chemicals, Runoff, and Erosion from Agricultural Management Systems , Conservation Report No. 26 . USDA-SEA: Washington, DC, 1980
   Google Scholar
• Smith , R.E. and Wiliams , J.R. 1980 . “ Simulation of the surface water hydrology ” . In CREAMS: A Field-Scale Model For Chemicals, Runoff, and Erosion from Agricultural Management Systems Edited by: Knisel , W.G. 13 – 35 . Durant, OK : USDA Conserv. Res. USDA-ARS .
   Google Scholar
• Wischmeier , W.H. and Smith , D.D. 1978 . “ Predicting rainfall erosion losses—a guide to conservation planning ” . In USDA Agric. Handbook 537 Washington, DC : U.S. Gov. Print. Office .
   Google Scholar
• Bagnold , R.A. 1966 . “ An approach to the sediment transport problem from general physics ” . In U.S. Geol. Survey Prof. 422 Washington, DC : U.S. Gov. Print. Office .
   Google Scholar
• Nash , J.E. and Suteliffe , V. 1970 . River flow forecasting through conceptual models, I. A discussion of principles . J. Hydrol. , 10 : 282 – 290 . [CROSSREF]
   Google Scholar
• Singh , V.P. 1995 . Computer Models of Watershed Hydrology 1130 Water Resources Publications .
   Google Scholar
• Panuska , J.C. , Moore , I.D. and Kramer , L.A. 1991 . Terrain analysis: integration into the agricultural nonpoint source (AGNPS) pollution model . J. Soil & Water Conserv. , : 59 – 64 .
   Web of Science ®Google Scholar
• Foster , G.R. , Lane , L.J. , Nowlin , J.D. , Laflen , J.M. and Young , R.A. 1981 . Estimating erosion and sediment yield on field-sized areas . Trans. ASAE , 24 : 1253 – 1262 .
   Google Scholar
• Young , R.A. , Onstad , C.A. , Bosch , D.D. and Anderson , W.P. AGNPS, Agricultural Nonpoint Source Pollution Model—A Watershed Analysis Tool , United State Department of Washington, Conservation Research Report . 1987, 35 pp. 1 – 80 . .
   Google Scholar
• Schwertmann , U. , Vogl , W. and Kainz , M. 1987 . Bodenerosion Durch Wasser-Vorhersage des Abtrags und Bewertung von Gegenmaß Nahmen Stuttgart, , Germany : Ulmer Verlag .
   Google Scholar
• McCool , D.K. , Brown , L.C. , Foster , G.R. , Mutchler , C.K. and Meyer , L.D. 1987 . Revised slope steepness factor for the universal soil loss equation . Trans. ASAE , 30 : 1387 – 1396 .
   Google Scholar
• Soil Conservation Service. 1985 . National Engineering Handbook, Section 4, Hydrology Washington, DC : USDA .
   Google Scholar
• Grunwald , S. and Norton , L.D. 1999 . An AGNPS-based runoff and sediment yield model for two small watersheds in Germany . Trans. ASAE , 42 : 1723 – 1731 . [CSA]
   Google Scholar