Tags

Type your tag names separated by a space and hit enter

Categorical Indicator Kriging for assessing the risk of groundwater nitrate pollution: the case of Vega de Granada aquifer (SE Spain).
Sci Total Environ. 2014 Feb 01; 470-471:229-39.ST

Abstract

Groundwater nitrate pollution associated with agricultural activity is an important environmental problem in the management of this natural resource, as acknowledged by the European Water Framework Directive. Therefore, specific measures aimed to control the risk of water pollution by nitrates must be implemented to minimise its impact on the environment and potential risk to human health. The spatial probability distribution of nitrate contents exceeding a threshold or limit value, established within the quality standard, will be helpful to managers and decision-makers. A methodology based on non-parametric and non-linear methods of Indicator Kriging was used in the elaboration of a nitrate pollution categorical map for the aquifer of Vega de Granada (SE Spain). The map has been obtained from the local estimation of the probability that a nitrate content in an unsampled location belongs to one of the three categories established by the European Water Framework Directive: CL. 1 good quality [Min - 37.5 ppm], CL. 2 intermediate quality [37.5-50 ppm] and CL. 3 poor quality [50 ppm - Max]. The obtained results show that the areas exceeding nitrate concentrations of 50 ppm, poor quality waters, occupy more than 50% of the aquifer area. A great proportion of the area's municipalities are located in these poor quality water areas. The intermediate quality and good quality areas correspond to 21% and 28%, respectively, but with the highest population density. These results are coherent with the experimental data, which show an average nitrate concentration value of 72 ppm, significantly higher than the quality standard limit of 50 ppm. Consequently, the results suggest the importance of planning actions in order to control and monitor aquifer nitrate pollution.

Authors+Show Affiliations

Departamento de Geodinámica, Universidad de Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain. Electronic address: mchica@ugr.es.Unidad del IGME en Granada, Urbanización Alcazar del Genil, 4, 18006 Granada, Spain. Electronic address: ja.luque@igme.es.School of Geography, University of Southampton, Southampton, SO17 1BJ, United Kingdom. Electronic address: vrgaliano@ugr.es.Instituto Geológico y Minero de España (IGME), Ríos Rosas 23, 28003 Madrid, Spain. Electronic address: e.pardo@igme.es.Facultad de Ciencias de la Salud, Universidad de Granada, Avda. Madrid s/n, 18071 Granada, Spain. Electronic address: luciachicarivas@hotmail.com.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24140694

Citation

Chica-Olmo, Mario, et al. "Categorical Indicator Kriging for Assessing the Risk of Groundwater Nitrate Pollution: the Case of Vega De Granada Aquifer (SE Spain)." The Science of the Total Environment, vol. 470-471, 2014, pp. 229-39.
Chica-Olmo M, Luque-Espinar JA, Rodriguez-Galiano V, et al. Categorical Indicator Kriging for assessing the risk of groundwater nitrate pollution: the case of Vega de Granada aquifer (SE Spain). Sci Total Environ. 2014;470-471:229-39.
Chica-Olmo, M., Luque-Espinar, J. A., Rodriguez-Galiano, V., Pardo-Igúzquiza, E., & Chica-Rivas, L. (2014). Categorical Indicator Kriging for assessing the risk of groundwater nitrate pollution: the case of Vega de Granada aquifer (SE Spain). The Science of the Total Environment, 470-471, 229-39. https://doi.org/10.1016/j.scitotenv.2013.09.077
Chica-Olmo M, et al. Categorical Indicator Kriging for Assessing the Risk of Groundwater Nitrate Pollution: the Case of Vega De Granada Aquifer (SE Spain). Sci Total Environ. 2014 Feb 1;470-471:229-39. PubMed PMID: 24140694.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Categorical Indicator Kriging for assessing the risk of groundwater nitrate pollution: the case of Vega de Granada aquifer (SE Spain). AU - Chica-Olmo,Mario, AU - Luque-Espinar,Juan Antonio, AU - Rodriguez-Galiano,Victor, AU - Pardo-Igúzquiza,Eulogio, AU - Chica-Rivas,Lucía, Y1 - 2013/10/16/ PY - 2013/06/12/received PY - 2013/09/26/revised PY - 2013/09/26/accepted PY - 2013/10/22/entrez PY - 2013/10/22/pubmed PY - 2014/8/15/medline KW - Categorical probability maps KW - European Water Framework Directive KW - Groundwater pollution KW - Indicator Kriging KW - Nitrate SP - 229 EP - 39 JF - The Science of the total environment JO - Sci Total Environ VL - 470-471 N2 - Groundwater nitrate pollution associated with agricultural activity is an important environmental problem in the management of this natural resource, as acknowledged by the European Water Framework Directive. Therefore, specific measures aimed to control the risk of water pollution by nitrates must be implemented to minimise its impact on the environment and potential risk to human health. The spatial probability distribution of nitrate contents exceeding a threshold or limit value, established within the quality standard, will be helpful to managers and decision-makers. A methodology based on non-parametric and non-linear methods of Indicator Kriging was used in the elaboration of a nitrate pollution categorical map for the aquifer of Vega de Granada (SE Spain). The map has been obtained from the local estimation of the probability that a nitrate content in an unsampled location belongs to one of the three categories established by the European Water Framework Directive: CL. 1 good quality [Min - 37.5 ppm], CL. 2 intermediate quality [37.5-50 ppm] and CL. 3 poor quality [50 ppm - Max]. The obtained results show that the areas exceeding nitrate concentrations of 50 ppm, poor quality waters, occupy more than 50% of the aquifer area. A great proportion of the area's municipalities are located in these poor quality water areas. The intermediate quality and good quality areas correspond to 21% and 28%, respectively, but with the highest population density. These results are coherent with the experimental data, which show an average nitrate concentration value of 72 ppm, significantly higher than the quality standard limit of 50 ppm. Consequently, the results suggest the importance of planning actions in order to control and monitor aquifer nitrate pollution. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/24140694/Categorical_Indicator_Kriging_for_assessing_the_risk_of_groundwater_nitrate_pollution:_the_case_of_Vega_de_Granada_aquifer__SE_Spain__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(13)01115-7 DB - PRIME DP - Unbound Medicine ER -