Delay in catchment nitrogen load to streams following restrictions on fertilizer application

Lidwien S. C. Vervloet, Philip John Binning, Christen D. Borgesen, Anker L. Højberg*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A MIKE SHE hydrological-solute transport model including nitrate reduction is employed to evaluate the delayed response in nitrogen loads in catchment streams following the implementation of nitrogen mitigation measures since the 1980s. The nitrate transport lag times between the root zone and the streams for the period 1950-2011 were simulated for two catchments in Denmark and compared with observational data. Results include nitrogen concentration and mass discharge to streams. By automated baseflow separation, stream discharge was separated into baseflow and drain flow components, and the nitrogen concentration and mass discharge in baseflow and drain flow were determined. This provided insight on the development of stream nitrogen loads, with a short average lag time in drain flow and a long average lag time in baseflow. The long term effect of nitrogen mitigation measures was determined, with results showing that there is a 15 years long delay in the appearance of peak nitrogen loads in streams. This means that real time stream monitoring data cannot be used alone to assess the effect of nitrogen mitigation measures. (C) 2018 Elsevier B.V. All rights reserved.
Original languageEnglish
JournalScience of the Total Environment
Volume627
Pages (from-to)1154-1166
Number of pages13
ISSN0048-9697
DOIs
Publication statusPublished - 2018

Keywords

  • Catchment scale
  • Nitrate lag times
  • Transport modelling
  • Redox conditions
  • Drain flow
  • Baseflow

Cite this

Vervloet, Lidwien S. C. ; Binning, Philip John ; Borgesen, Christen D. ; Højberg, Anker L. / Delay in catchment nitrogen load to streams following restrictions on fertilizer application. In: Science of the Total Environment. 2018 ; Vol. 627. pp. 1154-1166.
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title = "Delay in catchment nitrogen load to streams following restrictions on fertilizer application",
abstract = "A MIKE SHE hydrological-solute transport model including nitrate reduction is employed to evaluate the delayed response in nitrogen loads in catchment streams following the implementation of nitrogen mitigation measures since the 1980s. The nitrate transport lag times between the root zone and the streams for the period 1950-2011 were simulated for two catchments in Denmark and compared with observational data. Results include nitrogen concentration and mass discharge to streams. By automated baseflow separation, stream discharge was separated into baseflow and drain flow components, and the nitrogen concentration and mass discharge in baseflow and drain flow were determined. This provided insight on the development of stream nitrogen loads, with a short average lag time in drain flow and a long average lag time in baseflow. The long term effect of nitrogen mitigation measures was determined, with results showing that there is a 15 years long delay in the appearance of peak nitrogen loads in streams. This means that real time stream monitoring data cannot be used alone to assess the effect of nitrogen mitigation measures. (C) 2018 Elsevier B.V. All rights reserved.",
keywords = "Catchment scale, Nitrate lag times, Transport modelling, Redox conditions, Drain flow, Baseflow",
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Delay in catchment nitrogen load to streams following restrictions on fertilizer application. / Vervloet, Lidwien S. C.; Binning, Philip John; Borgesen, Christen D.; Højberg, Anker L.

In: Science of the Total Environment, Vol. 627, 2018, p. 1154-1166.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Delay in catchment nitrogen load to streams following restrictions on fertilizer application

AU - Vervloet, Lidwien S. C.

AU - Binning, Philip John

AU - Borgesen, Christen D.

AU - Højberg, Anker L.

PY - 2018

Y1 - 2018

N2 - A MIKE SHE hydrological-solute transport model including nitrate reduction is employed to evaluate the delayed response in nitrogen loads in catchment streams following the implementation of nitrogen mitigation measures since the 1980s. The nitrate transport lag times between the root zone and the streams for the period 1950-2011 were simulated for two catchments in Denmark and compared with observational data. Results include nitrogen concentration and mass discharge to streams. By automated baseflow separation, stream discharge was separated into baseflow and drain flow components, and the nitrogen concentration and mass discharge in baseflow and drain flow were determined. This provided insight on the development of stream nitrogen loads, with a short average lag time in drain flow and a long average lag time in baseflow. The long term effect of nitrogen mitigation measures was determined, with results showing that there is a 15 years long delay in the appearance of peak nitrogen loads in streams. This means that real time stream monitoring data cannot be used alone to assess the effect of nitrogen mitigation measures. (C) 2018 Elsevier B.V. All rights reserved.

AB - A MIKE SHE hydrological-solute transport model including nitrate reduction is employed to evaluate the delayed response in nitrogen loads in catchment streams following the implementation of nitrogen mitigation measures since the 1980s. The nitrate transport lag times between the root zone and the streams for the period 1950-2011 were simulated for two catchments in Denmark and compared with observational data. Results include nitrogen concentration and mass discharge to streams. By automated baseflow separation, stream discharge was separated into baseflow and drain flow components, and the nitrogen concentration and mass discharge in baseflow and drain flow were determined. This provided insight on the development of stream nitrogen loads, with a short average lag time in drain flow and a long average lag time in baseflow. The long term effect of nitrogen mitigation measures was determined, with results showing that there is a 15 years long delay in the appearance of peak nitrogen loads in streams. This means that real time stream monitoring data cannot be used alone to assess the effect of nitrogen mitigation measures. (C) 2018 Elsevier B.V. All rights reserved.

KW - Catchment scale

KW - Nitrate lag times

KW - Transport modelling

KW - Redox conditions

KW - Drain flow

KW - Baseflow

U2 - 10.1016/j.scitotenv.2018.01.255

DO - 10.1016/j.scitotenv.2018.01.255

M3 - Journal article

VL - 627

SP - 1154

EP - 1166

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

ER -