Quantification and mapping of the nutrient regulation ecosystem service demand on a local scale

Bicking, Sabine; Steinhoff‐Knopp, Bastian; Burkhard, Benjamin; Müller, Felix

doi:10.1080/26395916.2020.1722753

Cited by 10 publications

(1 citation statement)

References 71 publications

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“…As a result, N loads of rivers and aquifer systems often reflect only a minor part of the N surplus within the corresponding river basin area due to decay processes during the aquifer transit and within the surface water bodies themselves [39]. Many studies have highlighted that among these decay processes, DNT has a large potential to reduce the relative vulnerability of water bodies [40,41]. Unfortunately, these attenuation processes are not always properly incorporated within the vulnerability assessment methodologies [42,43], but only considered indirectly in lumped parameters.…”

Section: Introductionmentioning

confidence: 99%

Denitrification in Intrinsic and Specific Groundwater Vulnerability Assessment: A Review

2021

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Several groundwater vulnerability methodologies have been implemented throughout the years to face the increasing worldwide groundwater pollution, ranging from simple rating methodologies to complex numerical, statistical, and hybrid methods. Most of these methods have been used to evaluate groundwater vulnerability to nitrate, which is considered the major groundwater contaminant worldwide. Together with dilution, the degradation of nitrate via denitrification has been acknowledged as a process that can reduce reactive nitrogen mass loading rates in both deep and shallow aquifers. Thus, denitrification should be included in groundwater vulnerability studies and integrated into the various methodologies. This work reviewed the way in which denitrification has been considered within the vulnerability assessment methods and how it could increase the reliability of the overall results. Rating and statistical methods often disregard or indirectly incorporate denitrification, while numerical models make use of kinetic reactions that are able to quantify the spatial and temporal variations of denitrification rates. Nevertheless, the rating methods are still the most utilized, due to their linear structures, especially in watershed studies. More efforts should be paid in future studies to implement, calibrate, and validate user-friendly vulnerability assessment methods that are able to deal with denitrification capacity and rates at large spatial and temporal scales.

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