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Modelling long-term hydrochemical responce at ENCORE catchments in the UK and Norway

Abstract

ENCORE is an interdisciplinary project focusing on biological and chemical response to environmental change and the links between terrestrial and aquatic ecosystems. This report applies the MAGIC model, which is a catchment-scale model of soil and water acidification, to ten ENCORE catchments in the UK and Norway and uses it to examine the dynamic response to several scenarios of future land-use. MAGIC is an acronym for Model for Acidification of Groundwater In Catchments. The model is evaluated against catchment manipulation studies involving acid addition, acid exclusion, terrestrial liming and upland afforestation. Critical loads for sulphur are calculated. At all sites MAGIC successfully simulates present-day observed stream and soil chemistry. The predicted response of soils and surface waters to the two standard future deposition scenarios is similar at all catchments. All catchments continue to acidify under the worst-case scenario and all catchments recover under the best-case scenario. Exceptions are related to situations with concurrent land-use change, or in the case of nitrogen saturation. The success of MAGIC illustrates its robustness and indicates that the major processes included in the model are correctly identified as the major mechanisms controlling catchment chemical response to acid input. 39 refs., 10 figs., 4 tabs.
Publication Date:
Nov 01, 1994
Product Type:
Technical Report
Report Number:
NIVA-35/1994
Reference Number:
SCA: 540120; 540220; 540320; PA: NW-97:005009; EDB-97:016448; NTS-97:005514; SN: 97001722344
Resource Relation:
Other Information: PBD: Nov 1994
Subject:
54 ENVIRONMENTAL SCIENCES; AQUATIC ECOSYSTEMS; ACIDIFICATION; TERRESTRIAL ECOSYSTEMS; ECOLOGY; NORWAY; UNITED KINGDOM; ENVIRONMENTAL TRANSPORT; ENVIRONMENT; GROUND WATER; FORECASTING
OSTI ID:
418243
Research Organizations:
Norsk Inst. for Vannforskning, Oslo (Norway)
Country of Origin:
Norway
Language:
English
Other Identifying Numbers:
Other: ON: DE97722512; ISBN 82-577-2642-7; TRN: NO9705009
Availability:
OSTI as DE97722512
Submitting Site:
NW
Size:
44 p.
Announcement Date:
Jan 30, 1997

Citation Formats

Jenkins, A, Wright, R F, and Cosby, B J. Modelling long-term hydrochemical responce at ENCORE catchments in the UK and Norway. Norway: N. p., 1994. Web.
Jenkins, A, Wright, R F, & Cosby, B J. Modelling long-term hydrochemical responce at ENCORE catchments in the UK and Norway. Norway.
Jenkins, A, Wright, R F, and Cosby, B J. 1994. "Modelling long-term hydrochemical responce at ENCORE catchments in the UK and Norway." Norway.
@misc{etde_418243,
title = {Modelling long-term hydrochemical responce at ENCORE catchments in the UK and Norway}
author = {Jenkins, A, Wright, R F, and Cosby, B J}
abstractNote = {ENCORE is an interdisciplinary project focusing on biological and chemical response to environmental change and the links between terrestrial and aquatic ecosystems. This report applies the MAGIC model, which is a catchment-scale model of soil and water acidification, to ten ENCORE catchments in the UK and Norway and uses it to examine the dynamic response to several scenarios of future land-use. MAGIC is an acronym for Model for Acidification of Groundwater In Catchments. The model is evaluated against catchment manipulation studies involving acid addition, acid exclusion, terrestrial liming and upland afforestation. Critical loads for sulphur are calculated. At all sites MAGIC successfully simulates present-day observed stream and soil chemistry. The predicted response of soils and surface waters to the two standard future deposition scenarios is similar at all catchments. All catchments continue to acidify under the worst-case scenario and all catchments recover under the best-case scenario. Exceptions are related to situations with concurrent land-use change, or in the case of nitrogen saturation. The success of MAGIC illustrates its robustness and indicates that the major processes included in the model are correctly identified as the major mechanisms controlling catchment chemical response to acid input. 39 refs., 10 figs., 4 tabs.}
place = {Norway}
year = {1994}
month = {Nov}
}