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An integrated and physically based nitrogen cycle catchment model

机译：基于物理的集成氮循环集水模型

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摘要

This paper presents a modelling approach where the entire land-based hydrological and nitrogen cycle from field to river outlet was included. This approach is based on a combination of a physically based root zone model (DAISY) and a physically based distributed catchment model (MIKE SHE/MIKE11). Large amounts of data available from statistical databases and surface maps were used for determination of land use and management practises to predict leaching within the catchment. The modelling approach included a description of nitrate transformations in the root zone, denitrification in the saturated zone, wetland areas and the river system within the catchment. The modelling approach was applied for the Odense Fjord catchment which constitutes one of the pilot river basins for implementation of the European Water Framework Directive. The model simulated overall nitrogen fluxes in the river system consistent with the observed values but showed some discrepancies between simulated and observed daily discharge values The results showed significant differences of denitrification capacities between larger areas such as sub-catchments. This approach has great potential for optimal planning of the establishment of wetlands and further land use legislation with respect to high denitrification rates.
机译：本文提出了一种建模方法，其中包括从田地到河流出口的整个陆地水文和氮循环。该方法基于基于物理的根区模型（DAISY）和基于物理的分布式集水模型（MIKE SHE / MIKE11）的组合。统计数据库和地表的大量数据被用于确定土地利用和管理方法，以预测集水区的淋溶。建模方法包括描述根部区域的硝酸盐转化，饱和区域，湿地区域和流域内的河流系统的反硝化作用。欧登塞峡湾流域采用了模拟方法，该流域是实施《欧洲水框架指令》的试点流域之一。该模型模拟了河流系统中的总氮通量，与实测值一致，但在模拟和实测的每日排放量值之间存在一些差异。结果显示，较大的区域（如子汇水面积）之间的反硝化能力存在显着差异。对于高反硝化率而言，这种方法对于优化湿地建设规划和进一步的土地使用立法具有巨大潜力。

著录项

  • 来源
    《Hydrology research》 |2009年第4期|347-363|共17页
  • 作者

    J. R. Hansen; J. C. Refsgaard; V. Ernstsen; S. Hansen; M. Styczen; R. N. Poulsen;

  • 作者单位

    Geological Survey of Denmark and Greenland, 0ster Voldgade 10, DK-1350 Copenhagen K, Denmark COWl, Parallelvej 2, DK-2800 Kongens Lyngby, Denmark;

    Geological Survey of Denmark and Greenland, 0ster Voldgade 10, DK-1350 Copenhagen K, Denmark;

    Geological Survey of Denmark and Greenland, 0ster Voldgade 10, DK-1350 Copenhagen K, Denmark;

    Department of Agricultural Sciences, Faculty of Life Sciences, University of Copenhagen, Hojbakkegaard Alle 30, DK-2630 Taastrup, Denmark;

    DHI water & Environment, Agern Alle 5, DK-2970 Horsholm, Denmark;

    DHI water & Environment, Agern Alle 5, DK-2970 Horsholm, Denmark;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    catchment; integrated; model; nitrate; non-point sources; physically based;

    机译：集水;集成;模型;硝酸盐非点源;基于身体;

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