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A coupled hydraulic-hydrologic modelling approach to deriving a water balance model for a complex floodplain wetland system

机译：复杂的洪泛区湿地系统水力平衡模型的水力水力耦合模拟方法

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摘要

Wetlands, particularly those in semi-arid or arid environments, are hotspots of biological diversity and productivity. Water resource managers are therefore increasing their efforts to conserve wetlands from environmental degradation. To do this, they require a thorough understanding of the wetting and drying regimes of these wetlands, and how potential land use, climate change and water resource development might affect inundation patterns. Hydrologic models can help to enhance this understanding, and to predict and assess future impacts. However, for semi-arid environments, data to assist in model construction is scarce. This paper presents a new method for developing a water balance model for a semi-arid wetland, the Narran Lakes ecosystem in eastern Australia. This method combines hydraulic (improving our understanding of water movement through a wetland) and hydrologic (improving our predictive capability for inundation levels) models and satellite imagery (acting as calibration and validation data) to produce a predictive model of wetland inundation. We show that this coupled hydraulic-hydrologic model yields inundation patterns commensurate with those that actually occurred over more than 30 years. The model results indicate that current inundation levels are at historical lows, which is most likely associated with a naturally occurring drought and increasing water resource development upstream.
机译：湿地，特别是在半干旱或干旱环境中的湿地，是生物多样性和生产力的热点。因此，水资源管理者正在加大努力，以保护湿地免受环境恶化的影响。为此，他们需要全面了解这些湿地的湿润和干燥状态，以及潜在的土地利用，气候变化和水资源开发可能如何影响淹没模式。水文模型可以帮助增进这种了解，并预测和评估未来的影响。但是，对于半干旱环境，缺乏用于模型构建的数据。本文提出了一种开发半干旱湿地水平衡模型的新方法，该模型是澳大利亚东部的纳兰湖生态系统。该方法结合了水力模型（提高了我们对通过湿地的水运动的理解）和水文模型（提高了对淹没水平的预测能力）和卫星图像（充当校准和验证数据），以生成湿地淹没的预测模型。我们表明，这种耦合的水文模型产生的淹没模式与超过30年实际发生的淹没模式相当。模型结果表明，当前的淹没水平处于历史低位，这很可能与自然干旱和上游水资源开发增加有关。

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  • 来源
    《Hydrology research》 |2009年第4期|364-379|共16页
  • 作者

    Scott Rayburg; Martin Thorns;

  • 作者单位

    Riverine Landscapes Research Laboratory, University of Canberra, Canberra ACT 2601, Australia Landscape Stressor Response Group, University of Technology, Sydney, New South Wales 2007, Australia;

    Riverine Landscapes Research Laboratory, University of Canberra, Canberra ACT 2601, Australia;

  • 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

    MIKE21; Narran Lakes ecosystem; remote sensing; water resource management; wetland;

    机译：MIKE21;纳兰湖生态系统;遥感;水资源管理;湿地;

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