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首页> 外文期刊>Environmental Monitoring and Assessment >Identification of effective best management practices in sediment yield diminution using GeoWEPP: the Kasilian watershed case study
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Identification of effective best management practices in sediment yield diminution using GeoWEPP: the Kasilian watershed case study

机译：使用GeoWEPP确定减少沉积物产量的有效最佳管理方法：Kasilian流域案例研究

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摘要

Identifying areas that are susceptible to soil erosion is crucial for water resource planning and management efforts. Furthermore, modeling has proven helpful in recognizing and monitoring high-risk areas at the watershed scale. The Water Erosion Prediction Project (WEPP) geospatial interface (GeoWEPP) software integrates GIS with the WEPP to analyze the spatial variation in soil loss, and it has been used as a modeling tool to determine the areas that are most prone to soil erosion and to evaluate best management practices for the Kasilian watershed in Iran. As much as 62.4 % of the agronomic land in the Kasilian watershed is affected by a high magnitude of erosion (＞5 t/ha). On the basis of this study, by using soybeans, high fertilization levels, and the drill-no-tillage system, reductions of erosion by almost 32.68-34.02 % are perceivable in three critical subwatersheds that are located in the cultivated lands. Also, it is projected that reductions in the production of sediment in the range of about 36.7-47.1 % are achievable by structural management within two critical, upland subwatersheds. So, by utilizing the best management strategies, sediment yield can be lowered and the conservation of soil and water is feasible at the watershed scale. These results objectively indicate that GeoWEPP can be efficaciously used for evaluating effective management practices for developing watershed conservation.
机译：确定易受水土流失影响的区域对于水资源规划和管理工作至关重要。此外，已证明建模有助于识别和监控分水岭规模的高风险区域。水蚀预测项目（WEPP）地理空间接口（GeoWEPP）软件将GIS与WEPP集成在一起，以分析土壤流失的空间变化，它已被用作确定最易发生土壤侵蚀的区域并进行建模的模型工具。评估伊朗Kasilian流域的最佳管理实践。 Kasilian流域中多达62.4％的农用土地受到高度侵蚀（＞ 5吨/公顷）的影响。在这项研究的基础上，通过使用大豆，高施肥水平和免耕免耕系统，可在耕地上的三个关键子流域中将侵蚀减少近32.68-34.02％。而且，据预测，通过在两个关键的山地小流域内进行结构管理，可以减少大约36.7-47.1％的沉积物产量。因此，通过采用最佳管理策略，可以降低沉积物的产量，并且在分水岭规模上水土保持是可行的。这些结果客观地表明，GeoWEPP可有效地用于评估开发流域保护的有效管理实践。

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  • 来源
    《Environmental Monitoring and Assessment》 |2013年第12期|9803-9817|共15页
  • 作者

    Amin Reza Meghdadi;

  • 作者单位

    Department of Technical and Engineering, Science and Research Branch, Islamic Azad University, Tehran, Islamic Republic of Iran;

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

    GeoWEPP; Soil erosion; BMPs; GIS; Kasilian watershed;

    机译：GeoWEPP;水土流失;BMP;地理信息系统支腿分水岭;

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