publication . Article . 2013

The nitrate time bomb : a numerical way to investigate nitrate storage and lag time in the unsaturated zone

Lei Wang; A.S. Butcher; Marianne Stuart; Daren C. Gooddy; John P. Bloomfield;
Open Access English
  • Published: 03 Jun 2013
  • Publisher: Springer
  • Country: United Kingdom
Abstract
Nitrate pollution in groundwater, which is mainly from agricultural activities, remains an international problem. It threatens the environment, economics and human health. There is a rising trend in nitrate concentrations in many UK groundwater bodies. Research has shown it can take decades for leached nitrate from the soil to discharge into groundwater and surface water due to the ‘store’ of nitrate and its potentially long travel time in the unsaturated and saturated zones. However, this time lag is rarely considered in current water nitrate management and policy development. The aim of this study was to develop a catchment-scale integrated numerical method to...
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free text keywords: Hydrology, Environmental Engineering, Geochemistry and Petrology, General Environmental Science, Water Science and Technology, Environmental Chemistry, General Medicine, Surface water, Saturation (chemistry), Vadose zone, Nitrate transport, Water table, Nitrate, chemistry.chemical_compound, chemistry, Environmental science, Pollution, media_common.quotation_subject, media_common, Groundwater
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