Doctoral Dissertation Research: Geomorphic and Anthropogenic Controls on Baseflow Discharge of Southern Blue Ridge Mountain Streams

博士论文研究:地貌和人为对蓝岭山脉南部溪流基流流量的控制

基本信息

项目摘要

Baseflow refers to streamflow sustained between precipitation and snowmelt events, contributed from subsurface reservoirs such as bedrock, saprolite, alluvium, or soil. Because baseflow is extremely important in the context of stream ecology and freshwater supply, a critical need exists to understand the relationships between basin physical properties and baseflow, as well as the ways in which human land use affects these physical properties. Topography and land use, separately, have been demonstrated to exert strong influence on baseflow, but their relative influences and interaction remain unclear. Previous studies have demonstrated inconsistent results as to whether watershed forest cover increases or decreases baseflow discharge, and how such issues relate to watershed scale remains a major unresolved problem in the hydrologic sciences. This project will assess the roles of topography and land use on baseflow in the southern Blue Ridge Mountains, emphasizing the following objectives: 1) assessment of the relationship between basin forest cover and baseflow, 2) determination of the relative influences of topography and land use on baseflow, and 3) prediction of streamflow response to future land-use change using GIS modeling. Sub-basins of the Little Tennessee River basin in North Carolina and Georgia will be characterized using GIS analysis of digital terrain and land-cover data. At least 35 streams will be instrumented with continuous stage recorders, from which baseflow discharge values will be derived and related to land-use and topographic characteristics. Subsequent GIS modeling will allow prediction of baseflow response to further land-use change in the region and will guide development planning to encourage growth scenarios imparting minimal impact on baseflow water quantity.Adequate freshwater protection has been at the forefront of global issues for decades, and its urgency continues to increase, as water resource demands grow with population and industry. Contaminants entering stream systems via subsurface pathways are most highly concentrated during baseflow, and a firmer understanding of controls on water quantity is imperative to sustaining public health, aquatic biotic integrity, and economic growth. Results from this project will be significant in many realms, from advancement of hydrologic and geomorphic theory to protection of adequate water supply for sensitive aquatic species. The development and testing of modeling capabilities to estimate streamflow response to land use change will assist further research and ongoing monitoring and management agendas. The identification of key topographic and land-use characteristics exerting control on water quantity will benefit sustainable development planning, wildlife protection, water resources management, public health, and industry, and will facilitate and improve future environmental research.
基流是指在降水和融雪事件之间持续的径流,来自地下水库,如基岩、腐泥土、冲积层或土壤。由于基流是非常重要的河流生态和淡水供应的背景下,迫切需要了解流域的物理特性和基流之间的关系,以及人类土地利用影响这些物理特性的方式。地形和土地利用,分别已被证明对基流产生强烈的影响,但它们的相对影响和相互作用仍然不清楚。以往的研究表明,流域森林覆盖是否增加或减少基流流量,以及这些问题如何与流域尺度仍然是一个重大的水文科学尚未解决的问题不一致的结果。该项目将评估地形和土地利用对蓝岭山脉南部基流的作用,强调以下目标:1)评估流域森林覆盖和基流之间的关系,2)确定地形和土地利用对基流的相对影响,3)利用GIS建模预测未来土地利用变化对径流的响应。将利用地理信息系统对数字地形和土地覆盖物数据进行分析,确定小田纳西河流域在北卡罗来纳州和格鲁吉亚的分流域的特征。 至少有35条溪流将配备连续水位记录仪,从中得出基流流量值,并与土地使用和地形特征相关。随后的地理信息系统建模将允许预测基流的反应,进一步的土地利用变化在该地区,并将指导发展规划,以鼓励增长的情况下给予最小的影响基流水quantity.Sufficient淡水保护一直在全球问题的前沿几十年,其紧迫性继续增加,水资源需求增长与人口和工业。污染物进入河流系统通过地下途径是最高度集中在基流,更坚定地了解控制水量是必不可少的,以维持公共健康,水生生物的完整性和经济增长。 该项目的成果将在许多领域具有重要意义,从水文和地貌理论的进步到保护敏感水生物种的充足供水。 开发和测试模拟能力,以估计径流对土地利用变化的反应,将有助于进一步的研究和正在进行的监测和管理议程。确定控制水量的关键地形和土地利用特征将有利于可持续发展规划、野生动物保护、水资源管理、公共卫生和工业,并将促进和改善未来的环境研究。

项目成果

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Albert Parker其他文献

Australia’s Under-Utilised Bioenergy Resources
  • DOI:
    10.1007/s12649-013-9247-6
  • 发表时间:
    2013-06-18
  • 期刊:
  • 影响因子:
    2.800
  • 作者:
    Andrew Lang;Heinz Kopetz;Andrew Stranieri;Albert Parker
  • 通讯作者:
    Albert Parker
Sea level trends at locations of the United States with more than 100 years of recording
  • DOI:
    10.1007/s11069-012-0400-5
  • 发表时间:
    2012-09-25
  • 期刊:
  • 影响因子:
    3.700
  • 作者:
    Albert Parker
  • 通讯作者:
    Albert Parker
Comment to assessing sea level rise costs and adaptation benefits under uncertainty in Greece
  • DOI:
    10.1016/j.envsci.2013.12.003
  • 发表时间:
    2014-04-01
  • 期刊:
  • 影响因子:
  • 作者:
    Albert Parker
  • 通讯作者:
    Albert Parker
Testing new hypotheses of neurological and immunological outcomes with aluminum-containing vaccines is warranted.
有必要测试含铝疫苗的神经学和免疫学结果的新假设。
802-3 Treatment of Ventricular Arrhythmias After the Cardiac Arrhythmia Suppression Trial (CAST): A Survey of US Physicians
  • DOI:
    10.1016/0735-1097(95)93073-l
  • 发表时间:
    1995-02-01
  • 期刊:
  • 影响因子:
  • 作者:
    Yves Rosenberg;Eleanor Schron;Mario Stylianou;Albert Parker
  • 通讯作者:
    Albert Parker

Albert Parker的其他文献

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{{ truncateString('Albert Parker', 18)}}的其他基金

Doctoral Dissertation Research: Barrier Island Morphology and Dune Vegetation Pattern and Process in the Georgia Embayment
博士论文研究:佐治亚州海湾的障壁岛形态和沙丘植被格局与过程
  • 批准号:
    9811349
  • 财政年份:
    1998
  • 资助金额:
    $ 1.2万
  • 项目类别:
    Standard Grant
Doctoral Dissertation Research in Geography and Regional Science
地理学与区域科学博士论文研究
  • 批准号:
    9014706
  • 财政年份:
    1990
  • 资助金额:
    $ 1.2万
  • 项目类别:
    Standard Grant

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