Nitrate contamination of groundwater: A conceptual management framework
Nitrate contamination of groundwater: A conceptual management framework
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DOI：
10.1016/j.eiar.2006.11.002
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发表时间：
2007-04-01
影响因子：
7.9
通讯作者：
Almasri, Mohammad N.
中科院分区：
文献类型：
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作者：
Almasri, Mohammad N.
近年来，在许多国家，公众对硝酸盐污染导致地下水质量恶化的担忧日益加剧。人们越来越关注人为来源作为问题的潜在原因。有证据表明，在以农业为主的流域的许多含水层系统中，硝酸盐 (NO3) 水平通常超过 10 毫克/升 NO3-N 的最大污染物水平 (MCL)。由于硝酸盐污染导致地下水质量下降，加上对饮用水的需求不断增加，促使人们采取受污染含水层的恢复行动。恢复工作加剧了开发保护替代方案和管理方案的迫切需要，以使关键受体的最终硝酸盐浓度低于 MCL。本文提出了地下水硝酸盐污染管理的总体概念框架。该管理框架利用不饱和和饱和区域的硝酸盐归宿和运输模型来模拟关键受体处的硝酸盐浓度。为了研究考虑环境和经济方面的不同管理方案的影响，拟议的框架纳入了多标准决策分析的组成部分。为了增强模型开发的空间性以及管理选项，利用土地利用图来分配和计算不同来源的地面氮负荷。 (c) 2006 Elsevier Inc. 保留所有权利。
In many countries, public concern over the deterioration of groundwater quality from nitrate contamination has grown significantly in recent years. This concern has focused increasingly on anthropogenic sources as the potential cause of the problem. Evidence indicates that the nitrate (NO3) levels routinely exceed the maximum contaminant level (MCL) of 10 mg/l NO3-N in many aquifer systems that underlie agriculture-dominated watersheds. Degradation of groundwater quality due to nitrate pollution along with the increasing demand for potable water has motivated the adoption of restoration actions of the contaminated aquifers. Restoration efforts have intensified the dire need for developing protection alternatives and management options such that the ultimate nitrate concentrations at the critical receptors are below the MCL. This paper presents a general conceptual framework for the management of groundwater contamination from nitrate. The management framework utilizes models of nitrate fate and transport in the unsaturated and saturated zones to simulate nitrate concentration at the critical receptors. To study the impact of different management options considering both environmental and economic aspects, the proposed framework incorporates a component of a multi-criteria decision analysis. To enhance spatiality in model development along with the management options, the utilization of a land use map is depicted for the allocation and computation of on-ground nitrogen loadings from the different sources. (c) 2006 Elsevier Inc. All rights reserved.