QEIB: A Spatially-Explicit Watershed-Scale Analysis of Nutrient Loading to Adirondack Lake Ecosystems

QEIB：阿迪朗达克湖生态系统养分负荷的空间明确流域规模分析

• 批准号: 0716869
• 负责人: Charles Canham
• 金额: --
• 依托单位: Cary Institute of Ecosystem Studies, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0716869&HistoricalAwards=false
• 关键词: QEIB; Spatially; Explicit; Watershed; Scale

Lakes of the northern forest regions of the U.S. vary widely in nutrient concentrations and water quality because of natural variation in the composition and configuration of vegetation in the watershed, and because of variation in inputs due to human activities. Air pollution is the dominant human source of nitrogen loading, and lakeshore development is a primary source of phosphorus loading. This research will use a novel, spatially-explicit modeling approach to quantify the watershed controls on nutrient concentrations across a set of more than 350 lakes within New York's Adirondack Park. The research involves sampling the chemistry of each of the lakes, and then using datasets on the topography and vegetation of each watershed to estimate the rates of nutrient input from different vegetation types. The research will also examine how lakeshore vegetation modifies inputs from the rest of the watershed. The Adirondack Park is a unique mix of public and private lands, and the shorelines of more than half of the lakes are in private property. Staff from the Adirondack Park Agency view this research as a critical tool in the identification of lakes that are particularly sensitive to changes in nutrient loading as a function of changes in land-use. Results from this research will also be used to develop teaching materials for the IES Ecosystem Literacy Initiative (ELI). This initiative provides educational outreach to teachers, students, and the public to develop an understanding of how human welfare depends on ecosystem services.

美国北方森林地区湖泊的营养盐浓度和水质差异很大，这是因为流域内植被的组成和配置存在自然变化，以及人类活动导致的输入变化。 空气污染是氮负荷的主要人为来源，湖岸开发是磷负荷的主要来源。 这项研究将使用一种新的，空间上明确的建模方法来量化流域控制营养盐浓度在一组超过350个湖泊内纽约的阿迪朗达克公园。 该研究涉及对每个湖泊的化学成分进行采样，然后使用每个流域的地形和植被数据集来估计不同植被类型的营养输入率。 这项研究还将研究湖岸植被如何改变流域其他部分的输入。 阿迪朗达克公园是公共和私人土地的独特组合，超过一半的湖泊的海岸线是私人财产。 阿迪朗达克公园管理局的工作人员认为，这项研究是一个关键的工具，在确定湖泊，特别是敏感的营养负荷的变化，作为一个功能，在土地利用的变化。这项研究的结果也将用于为IES生态系统扫盲计划（ELI）开发教材。 这一举措为教师、学生和公众提供教育宣传，以了解人类福祉如何依赖于生态系统服务。