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首页> 外文期刊>The Science of the Total Environment >Modifying SWAT-CS for simulating chloride dynamics in a Boreal Shield headwater catchment in south-central Ontario, Canada
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Modifying SWAT-CS for simulating chloride dynamics in a Boreal Shield headwater catchment in south-central Ontario, Canada

机译：修改SWAT-CS以模拟加拿大安大略省中南部的Boreal Shield上游流域的氯化物动力学

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摘要

Rising chloride concentrations in surface water due to applications of deicing practices is proving detrimental to aquatic systems. In this study, a new chloride module is developed for a version of the Soil and Water Assessment Tool specially designed for Canadian Shield catchments (SWAT-CS) to model long-term chloride dynamics in a headwater catchment in south-central Ontario, Canada. In this modified model (SWAT-CS-CL; extended SWAT-CS model for chloride), chloride sources, sinks, internal storages or pools, and movement between these components are depicted. Performance of SWAT-CS-CL is assessed using a two-stage evaluation process based on the generalized likelihood uncertainty analysis (GLUE) framework. SWAT-CS-CL was found to perform moderately well, with simulated monthly chloride in streams and lake outflow following overall chloride trends and capturing regular chloride dynamics. However, simulations fail to consistently reproduce some instances of large or low chloride fluxes. Limitations in simulating large chloride fluxes may be attributed to the inadequate ability for SWAT-CS-CL to closely simulate snowpack and snowmelt processes. Parameter transferability among sub-catchments does suggest that there is a potential to extend SWAT-CS-CL to other Canadian Shield catchments for chloride modelling. Further improvements are needed through more trials to other catchments in a same or different landscape, and by modifying the simulation structure, especially representation of snow hydrology and chloride inputs.
机译：事实证明，由于采用了除冰方法，地表水中的氯化物浓度上升，这对水生系统有害。在这项研究中，为专门为加拿大盾构集水区（SWAT-CS）设计的土壤和水评估工具版本开发了一个新的氯化物模块，以对加拿大安大略省中南部的上游水源集水区的长期氯离子动力学进行建模。在此修改的模型（SWAT-CS-CL;氯离子的扩展SWAT-CS模型）中，描述了氯离子源，汇，内部存储或池以及这些组件之间的移动。 SWAT-CS-CL的性能通过基于广义似然不确定性分析（GLUE）框架的两阶段评估过程进行评估。发现SWAT-CS-CL的性能中等，根据总体氯离子趋势并捕获规律的氯离子动力学，模拟了溪流和湖泊流出物中的每月氯离子。但是，模拟无法始终如一地重现某些氯化物通量大或低的情况。模拟大型氯化物通量的局限性可能是由于SWAT-CS-CL不能充分模拟积雪和融雪过程的能力不足。子集水区之间的参数可转移性确实表明，有可能将SWAT-CS-CL扩展到其他加拿大盾构集水区以进行氯化物建模。需要通过对相同或不同景观中的其他流域进行更多试验，并通过修改模拟结构（尤其是雪水文学和氯化物输入的表示形式）来进一步改进。

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  • 来源
    《The Science of the Total Environment》 |2020年第may15期|137213.1-137213.15|共15页
  • 作者

    Dejian Zhang; Huaxia Yao; April James; Qiaoying Lin; Wenjie Fu;

  • 作者单位

    College of Computer and Information Engineering Xiamen University of Technology Ligong Road 600 Xiamen 361024 Fujian China Key Laboratory of Ecological Environment and Information Atlas (Putian University) Fujian Provincial University Xueyuan Road 1133 Chengxiang District Putian 351100 Fujian China;

    Dorset Environmental Science Centre Ontario Ministry of Environment Conservation and Parks 1026 Bellwood Road Dorset Ontario POA 1E0 Canada;

    Department of Geography Nipissing University 100 College Drive Box 5002 North Bay Ontario P1B 8L7. Canada;

    Department of Resources and Environmental Sciences Quanzhou Normal University Donghai Street 398 Quanzhou 362000 Fujian China;

    Key Laboratory of Ecological Environment and Information Atlas (Putian University) Fujian Provincial University Xueyuan Road 1133 Chengxiang District Putian 351100 Fujian China College of Civil Engineering Putian University Xueyuan Road 1133 Chengxiang District Putian 351100 Fujian China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Atmospheric chloride deposition; De-icing application; GLUE; SWAT-CS-CL; Water quality modelling;

    机译：大气氯化物沉积;除冰应用;胶;特警CS-CL;水质模拟;

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