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首页> 外文期刊>Ground water >Applying a Regional Transport Modeling Framework to Manage Nitrate Contamination of Groundwater
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Applying a Regional Transport Modeling Framework to Manage Nitrate Contamination of Groundwater

机译：应用区域运输建模框架管理地下水的硝酸盐污染

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摘要

Regional nitrate contamination in groundwater is a management challenge involving multisector benefits. There is always conflict between restricting anthropogenic activities to protect groundwater quality and prioritizing economic development, especially in productive agriculture dominated areas. To mitigate the nitrate contamination in groundwater, it is necessary to develop management alternatives that simultaneously support environmental protection and sustainable economic development. A regional transport modeling framework is applied to evaluate nitrate fate and transport in the Dagu Aquifer, a shallow sandy aquifer that supplies drinking water and irrigation water for a thriving agricultural economy in Shandong Province in east coastal China. The aquifer supports intensive high-value vegetable farms and nitrate contamination is extensive. Detailed land-use information and fertilizer use data were compiled and statistical approaches were employed to analyze nitrogen source loadings and the spatiotemporal distribution of nitrate in groundwater to support model construction and calibration. The evaluations reveal that the spatial distribution and temporal trends of nitrate contamination in the Dagu Aquifer are driven by intensive fertilization and vertical water exchange, the dominant flow pattern derived from intensive agricultural pumping and irrigation. The modeling framework is employed to assess the effectiveness of potentially applicable management alternatives. The predictive results provide quantitative comparisons for the trend and extent of groundwater quality mitigation under each scenario. Recommendations are made for measures that can both improve groundwater quality and sustain productive agricultural development.
机译：地下水中的区域硝酸盐污染是涉及多元化福利的管理挑战。限制人类学活动之间存在冲突，以保护地下水质量和优先考虑经济发展，特别是在生产性农业占主导地位。为了减轻地下水中的硝酸盐污染，有必要开发同时支持环境保护和可持续经济发展的管理替代方案。区域运输建模框架适用于浅滩含水层的硝酸盐命运和运输，为东海岸山东省山东省农业经济供应饮用水和灌溉水。含水层支持密集的高价值蔬菜农场，硝酸盐污染是广泛的。编制详细的土地使用信息和肥料使用数据，采用统计方法分析地下水中硝酸盐的氮源载荷和时空分布，以支持模型构建和校准。评价表明，大沽含水层中硝酸盐污染的空间分布和时间趋势是由强化施肥和垂直水交换的推动，主要的农业泵和灌溉的主要流动模式。建模框架用于评估潜在适用的管理替代品的有效性。预测结果为每个场景下的地下水质量减缓趋势和程度提供了定量比较。建议采取措施，以改善地下水质量和维持生产力农业发展。

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  • 来源
    《Ground water》 |2021年第2期|292-307|共16页
  • 作者

    Yang Lihong; Zheng Chunmiao; Andrews Charles B.; Wang Chengjian;

  • 作者单位

    Peking Univ Inst Water Sci 5 Yiheyuan Rd Beijing 100871 Peoples R China;

    Southern Univ Sci & Technol Sch Environm Sci & Engn State Environm Protect Key Lab Integrated Surface 1088 Xueyuan Blvd Shenzhen 518055 Peoples R China;

    SS Papadopulos & Associates Inc 1801 Rockville Pike Suite 220 Rockville MD 20852 USA;

    Qingdao Hydrol Bur 19 Donghai Rd Qingdao 266012 Shandong Peoples R China;

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  • 正文语种 eng
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