| Title: | The promise, practice, and state of planning tools to assess site vulnerability to runoff phosphorus loss |
| Authors: | Kleinman, P.J.A., A.N. Sharpley, A.R. Buda, Z.M. Easton, J.A. Lory, D.L. Osmond, D.E. Radcliffe, N.O. Nelson, T.L. Veith and D.G. Doody |
| Year: | 2017 |
| Journal: | Journal of Environmental Quality |
| Volume (Issue): | 46(6) |
| Pages: | 1243-1249 |
| Article ID: | |
| DOI: | 10.2134/jeq2017.10.0395 |
| URL (non-DOI journals): | |
| Model: | APEX & SWAT |
| Broad Application Category: | overview of special journal issue/section/etc. |
| Primary Application Category: | phosphorus cycling/loss and transport |
| Secondary Application Category: | review/history |
| Watershed Description: | None |
| Calibration Summary: | |
| Validation Summary: | |
| General Comments: | The authors also discuss the use of the TBET model for P assessments, but TBET is really an interface that was built from a suite of SWAT simulations so TBET is not recognized as a separate model for this study in the literature database. |
| Abstract: | Over the past 20 yr, there has been a proliferation of phosphorus
(P) site assessment tools for nutrient management planning,
particularly in the United States. The 19 papers that make up this
special section on P site assessment include decision support
tools ranging from the P Index to fate-and-transport models to
weather-forecast-based risk calculators. All require objective
evaluation to ensure that they are effective in achieving intended
benefits to protecting water quality. In the United States, efforts
have been underway to compare, evaluate, and advance an
array of P site assessment tools. Efforts to corroborate their
performance using water quality monitoring data confirms
previously documented discrepancies between different P
site assessment tools but also highlights a surprisingly strong
performance of many versions of the P Index as a predictor of
water quality. At the same time, fate-and-transport models, often
considered to be superior in their prediction of hydrology and
water quality due to their complexity, reveal limitations when
applied to site assessment. Indeed, one consistent theme from
recent experience is the need to calibrate highly parameterized
models. As P site assessment evolves, so too do routines
representing important aspects of P cycling and transport. New
classes of P site assessment tools are an opportunity to move P
site assessment from general, strategic goals to web-based tools
supporting daily, operational decisions. |
| Language: | English |
| Keywords: | |