• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nordic hydrology >Implementing contour bank farming practices into the J2000 model to improve hydrological and erosion modelling in semi-arid Western Cape Province of South Africa
【24h】

Implementing contour bank farming practices into the J2000 model to improve hydrological and erosion modelling in semi-arid Western Cape Province of South Africa

机译：在J2000模型中实施等高线银行耕作方法，以改善南非半干旱西开普省的水文和侵蚀模型

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Contour bank farming is a well-known agricultural management technique in areas which are characterised by intensive and erosive rainfalls. Contour banks are designed to reduce the flow velocity of overland flow and to intercept water before it concentrates in rills, thereby reducing the risk of soil erosion and land degradation. By their structure, contour banks noticeably impact surface runoff pattern both temporally and spatially. Also subsurface flow may be affected by contour banks. For example, if contour banks intersect the A- and B-horizon of the soil, it can cause significant infiltration of water into the C-horizon, which if saline, can generate saline interflow to downslope areas. Although these aspects have been highlighted in previous research efforts, the quantitative and qualitative impacts of contours on runoff generation and associated erosion dynamics or salinisation are rarely considered in process-based hydrological modelling approaches. In this study an approach was developed to improve distributed hydrological and erosion modelling by integrating contour banks in the delineation and routing of Hydrological Response Units. Applying the distributed and process-based hydrological model J2000 which was modified with a contour bank and erosion module it could be shown that the implementation of contour banks improved the model performance significantly.
机译：等高线农业是在降雨密集和侵蚀性强的地区的一种著名的农业管理技术。轮廓库的​​设计可降低陆上水流的流速，并在水集中成小溪之前拦截水，从而降低水土流失和土地退化的风险。通过它们的结构，轮廓库在时间和空间上都显着影响表面径流模式。同样，地下流动也可能受到轮廓线库的影响。例如，如果等高线堤与土壤的A-和B-地平线相交，则可能导致水显着渗入C-地平线，如果为盐水，则可能会导致盐水流入下坡区域。尽管在以前的研究工作中已经强调了这些方面，但是在基于过程的水文模拟方法中，很少考虑等高线对径流产生以及相关侵蚀动态或盐碱化的定量和定性影响。在这项研究中，开发了一种方法，通过在水文响应单元的描绘和布线中整合等高线库来改善分布式水文和侵蚀模型。应用基于等值线库和侵蚀模块进行修改的基于过程的分布式水文模型J2000，可以看出等值线库的实施显着改善了模型性能。

著录项

  • 来源
    《Nordic hydrology》 |2015年第2期|192-211|共20页
  • 作者

    Thomas Steudel; Richard Bugan; Holm Kipka; Bjoern Pfennig; Manfred Fink; Willem de Clercq; Wolfgang-Albert Fluegel; Joerg Helmschrot;

  • 作者单位

    Department of Geoinformatics, Hydrology and Modelling, Friedrich-Schiller-University Jena, Germany;

    Department of Soil Science, Stellenbosch University, South Africa,Council for Scientific and Industrial Research (CSIR), Stellenbosch, South Africa;

    Department of Geoinformatics, Hydrology and Modelling, Friedrich-Schiller-University Jena, Germany;

    Department of Geoinformatics, Hydrology and Modelling, Friedrich-Schiller-University Jena, Germany;

    Department of Geoinformatics, Hydrology and Modelling, Friedrich-Schiller-University Jena, Germany;

    Department of Soil Science, Stellenbosch University, South Africa;

    Department of Geoinformatics, Hydrology and Modelling, Friedrich-Schiller-University Jena, Germany;

    Biocentre Klein Flottbek and Botanical Garden, University of Hamburg, Germany;

  • 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

    contour bank farming; flow pattern; hydrological and erosion modelling; J2000; Sandspruit; South Africa;

    机译：等高线农业;流型水文和侵蚀模型;J2000;Sandspruit;南非;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号