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Mapping nitrate leaching to upper groundwater in the sandy regions of The Netherlands, using conceptual knowledge
The European Community asks its Member States to provide a comprehensive and coherent overview of their groundwater chemical status. It is stated that simple conceptual models are necessary to allow assessments of the risks of failing to meet quality objectives. In The Netherlands two monitoring net...
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Formato: | Texto |
Lenguaje: | English |
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Springer Netherlands
2007
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2785891/ https://www.ncbi.nlm.nih.gov/pubmed/17713860 http://dx.doi.org/10.1007/s10661-007-9756-5 |
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author | Boumans, Leo Fraters, Dico van Drecht, Gerard |
author_facet | Boumans, Leo Fraters, Dico van Drecht, Gerard |
author_sort | Boumans, Leo |
collection | PubMed |
description | The European Community asks its Member States to provide a comprehensive and coherent overview of their groundwater chemical status. It is stated that simple conceptual models are necessary to allow assessments of the risks of failing to meet quality objectives. In The Netherlands two monitoring networks (one for agriculture and one for nature) are operational, providing results which can be used for an overview. Two regression models, based upon simple conceptual models, link measured nitrate concentrations to data from remote sensing images of land use, national forest inventory, national cattle inventory, fertiliser use statistics, atmospheric N deposition, soil maps and weather monitoring. The models are used to draw a nitrate leaching map and to estimate the size of the area exceeding the EU limit value in the early 1990s. The 95% confidence interval for the fraction nature and agricultural areas where the EU limit value for nitrate (50 mg/l) was exceeded amounted to 0.77–0.85 while the lower 97.5% confidence limit for the fraction agricultural area where the EU limit value was exceeded amounted to 0.94. Although the two conceptual models can be regarded as simple, the use of the models to give an overview was experienced as complex. |
format | Text |
id | pubmed-2785891 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2007 |
publisher | Springer Netherlands |
record_format | MEDLINE/PubMed |
spelling | pubmed-27858912009-12-15 Mapping nitrate leaching to upper groundwater in the sandy regions of The Netherlands, using conceptual knowledge Boumans, Leo Fraters, Dico van Drecht, Gerard Environ Monit Assess Article The European Community asks its Member States to provide a comprehensive and coherent overview of their groundwater chemical status. It is stated that simple conceptual models are necessary to allow assessments of the risks of failing to meet quality objectives. In The Netherlands two monitoring networks (one for agriculture and one for nature) are operational, providing results which can be used for an overview. Two regression models, based upon simple conceptual models, link measured nitrate concentrations to data from remote sensing images of land use, national forest inventory, national cattle inventory, fertiliser use statistics, atmospheric N deposition, soil maps and weather monitoring. The models are used to draw a nitrate leaching map and to estimate the size of the area exceeding the EU limit value in the early 1990s. The 95% confidence interval for the fraction nature and agricultural areas where the EU limit value for nitrate (50 mg/l) was exceeded amounted to 0.77–0.85 while the lower 97.5% confidence limit for the fraction agricultural area where the EU limit value was exceeded amounted to 0.94. Although the two conceptual models can be regarded as simple, the use of the models to give an overview was experienced as complex. Springer Netherlands 2007-08-23 2008-02 /pmc/articles/PMC2785891/ /pubmed/17713860 http://dx.doi.org/10.1007/s10661-007-9756-5 Text en © Springer Science+Business Media B.V. 2007 |
spellingShingle | Article Boumans, Leo Fraters, Dico van Drecht, Gerard Mapping nitrate leaching to upper groundwater in the sandy regions of The Netherlands, using conceptual knowledge |
title | Mapping nitrate leaching to upper groundwater in the sandy regions of The Netherlands, using conceptual knowledge |
title_full | Mapping nitrate leaching to upper groundwater in the sandy regions of The Netherlands, using conceptual knowledge |
title_fullStr | Mapping nitrate leaching to upper groundwater in the sandy regions of The Netherlands, using conceptual knowledge |
title_full_unstemmed | Mapping nitrate leaching to upper groundwater in the sandy regions of The Netherlands, using conceptual knowledge |
title_short | Mapping nitrate leaching to upper groundwater in the sandy regions of The Netherlands, using conceptual knowledge |
title_sort | mapping nitrate leaching to upper groundwater in the sandy regions of the netherlands, using conceptual knowledge |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2785891/ https://www.ncbi.nlm.nih.gov/pubmed/17713860 http://dx.doi.org/10.1007/s10661-007-9756-5 |
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