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首页> 外文学位 >Prioritizing stream restoration: A decision support tool for use in restoring waters impaired by excess sediment in the Blue Earth River Basin of Minnesota.
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Prioritizing stream restoration: A decision support tool for use in restoring waters impaired by excess sediment in the Blue Earth River Basin of Minnesota.

机译：优先进行河流修复：一种决策支持工具，用于修复明尼苏达州“蓝色地球”河流域中因过多沉积物而受损的水。

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摘要

The hydrology of the Blue Earth River Basin has been dramatically altered following European settlement in the mid-to-late 1800's. Land use change has resulted in hydrologic instability leading to streambank and bluff erosion and increased sediment transport (Magner et al., 2003). Hydrologic change has led to an increase in Turbidity, or cloudiness of the river commonly measured as total suspended sediment (TSS). Excessive turbidity in water can be harmful to both humans (if used for drinking water) and aquatic life. In the Greater Blue Earth River Basin, there are 39 stream/river reaches that fail to meet the state's water quality standards for Turbidity, which is 90 parts per million TSS (MPCA, 2005). The purpose of this study is to create a tool that researchers can use to prioritize stream restoration in the Blue Earth River Basin in a relatively quick, productive and cost-effective way. The tool created will help prioritize stream sites for restoration based on a set of decision support metrics. A field test of the tool was conducted on two tributaries to the Blue Earth; Elm and Center Creek. The tool was tested on a total of 30 sites from these two tributaries. The future goal for this tool is for it to be used to help local officials prioritize restoration on unstable areas throughout the Blue Earth River Basin that are actively eroding and contributing sediment to the Blue Earth River.
机译：在1800年代中后期欧洲定居之后，蓝土河流域的水文学发生了巨大变化。土地用途的变化导致水文不稳定，导致河岸和断崖侵蚀以及泥沙输送增加（Magner等，2003）。水文变化导致浊度增加，或通常以总悬浮物（TSS）衡量的河流混浊。水中混浊度过高可能对人类（如果用于饮用水）和水生生物均有害。在大蓝土河流域，有39条河流/河段未达到州对浊度的水质标准，即每百万TSS 90份（MPCA，2005年）。这项研究的目的是创建一种工具，研究人员可以使用该工具以相对快速，生产高效且具有成本效益的方式对蓝土河流域的河流修复进行优先排序。创建的工具将基于一组决策支持指标来帮助确定流站点的优先级以进行恢复。在蓝色地球的两个支流上对该工具进行了现场测试。榆树和中心河。在这两个支流的总共30个站点上对该工具进行了测试。该工具的未来目标是用于帮助当地官员优先处理整个蓝土河流域不稳定地区的恢复工作，这些地区正在积极侵蚀并为蓝土河流贡献沉积物。

著录项

  • 作者

    Presnail, Mary Louise.;

  • 作者单位

    University of Minnesota.;

  • 授予单位 University of Minnesota.;
  • 学科 Natural Resource Management.;Environmental Management.
  • 学位 M.S.
  • 年度 2013
  • 页码 98 p.
  • 总页数 98
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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