Modeling Phosphorus in the Environment

by Radcliffe; David E.

• ISBN13: 9780849337772
• ISBN10: 0849337771
• Format: Hardcover
• Copyright: 2006-11-14
• Publisher: CRC Press

Summary

Despite advances in modeling, such as graphical user interfaces, the use of GIS layers, and databases for developing input files, the approaches to modeling phosphorus (P) have not changed since their initial development in the 1980s. Current understanding of P processes has evolved and this new information needs to be incorporated into the current models. Filling this need, Modeling Phosphorus in the Environment describes basic approaches to modeling P, how the current models implement these approaches, and ways to improve them.The book sets the scene with a review of general approaches to modeling runoff and erosion, P in runoff, leaching of P, stream processes that affect P, and an examination of the important issue of model uncertainty. It describes state-of-the-science watershed-scale P transport models including dynamic semi-disturbed models, models of intermediate complexity, and two lumped models. Phosphorus Indexes (PIs) represent one end of the modeling spectrum and the book takes a comprehensive look at PIs developed in each state, and illustrates some of the problems encountered when incorporating PIs into farm-scale manure management software. The book discusses monitoring data, which is critical for calibrating models, and concludes with suggestions for improving the modeling of P.From researching mechanisms to applying regulations, the uses of phosphorus models have increased as our knowledge of the effects of phosphorus in the environment has increased. Drawing on contributions from experts, the book gives you the tools to select the model that best fits your needs.

Table of Contents

Section I Basic Approaches	1	(160)
Modeling Phosphorus Movement from Agriculture to Surface Waters	3	(18)
Andrew N. Sharpley
Modeling Runoff and Erosion in Phosphorus Models	21	(44)
Mary Leigh Wolfe
Modeling Phosphorus in Runoff: Basic Approaches	65	(16)
Miguel L. Cabrera
Basic Approaches to Modeling Phosphorus Leaching	81	(24)
Nathan O. Nelson
John E. Parsons
Phosphorus Transport in Streams: Processes and Modeling Considerations	105	(26)
Brian E. Haggard
Andrew N. Sharpley
Uncertainty Estimation in Phosphorus Models	131	(30)
Keith Beven
Trevor Page
Malcolm McGechan
Section II Models	161	(138)
Phosphorus Modeling in Soil and Water Assessment Tool (SWAT) Model	163	(26)
Indrajeet Chaubey
K.W. Migliaccio
C.H. Green
J.G. Arnold
R. Srinivasan
Modeling Phosphorus with Hydrologic Simulation Program-Fortran	189	(26)
David E. Radcliffe
Zhulu Lin
Phosphorus Modeling in the Annualized Agricultural Nonpoint Source Pollution (AnnAGNPS) Model	215	(26)
Yongping Yuan
Ronald L. Bingner
Indrajeet Chaubey
Answers-2000: A Nonpoint Source Pollution Model for Water, Sediment, and Phosphorus Losses	241	(20)
Faycal Bouraoui
Theo A. Dillaha
Watershed Ecosystem Nutrient Dynamics-Phosphorus (WEND-P Models)	261	(16)
Robert L. Kort
E. Alan Cassell
Stefanie G. Aschmann
Modeling Phosphorus with the Generalized Watershed Loading Functions (GWLF) Model	277	(22)
Elliot M. Schneiderman
Section III Phosphorus Indices, Best Management Practices, and Calibration Data	299	(104)
Phosphorus Indices	301	(32)
Jennifer Weld
Andrew N. Sharpley
Challenges to Using and Implementing Phosphorus Indices in Nutrient Management Planning: an MMP Perspective	333	(18)
Philip Hess
Bradley Eisenhauer
Brad Joern
Quantifying the Effects of Phosphorus Control Best Management Practices	351	(32)
Margaret W. Gitau
Tamie L. Veith
Small Watershed Data Collection to Support Phosphorus Modeling	383	(20)
Daren Harmel
Brian E. Haggard
Section IV Modeling in the Future	403	(14)
Suggestions to Improve Modeling of Phosphorus	405	(12)
David E. Radcliffe
Miguel L. Cabrera
Index	417