LTREB: Collaborative Research: Hydrologic-Nutrient Cycle Interactions in Small, Undisturbed and Human-Manipulated Ecosystems

LTREB：合作研究：小型、未受干扰和人为操纵的生态系统中的水文-养分循环相互作用

• 批准号: 9806473
• 负责人: Gene Likens
• 金额: $ 36.9万
• 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: 1998
• 资助国家: 美国
• 起止时间: 1998-10-01 至 2004-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9806473&HistoricalAwards=false
• 关键词: LTREB; Collaborative; Research; Hydrologic; Nutrient

9806473 Likens This LTREB research will continue to support long-term ecological and biogeochemical studies at the Hubbard Brook Experimental Forest in New Hampshire to evaluate patterns and trends in the chemistry of atmospheric deposition, stream water and lake water, and to support efforts at synthesis and ecological integration of this information. Biogeochemical data that have been collected over the past 34 years and that will continue to be collected will be used to test critical hypotheses on (i) atmospheric deposition of strong acids and surface water acidification, (ii) the role of atmospheric deposition of nitrogen, nitrogen uptake by vegetation, and climatic factors on ecosystem nitrogen loss, and (iii) the effects of changing land-use on water quality. We will use long-term measurements of biogeochemistry and hydrology, the small watershed-ecosystem approach, and simulation models to test these hypotheses. An important aspect of the long-tern studies at Hubbard Brook is to separate the effects of local human-caused, land-use changes and natural forest succession from the impacts of regional disturbances, such as acid rain and climate changes.

9806473比作这项LTREB研究将继续支持新罕布什尔州哈伯德溪实验森林的长期生态和生物地球化学研究，以评估大气沉积，溪流水和湖水的化学的模式和趋势，并支持此信息的合成和生态整合。在过去的34年中收集并将继续收集的生物地球化学数据将用于测试（i）（i）强酸和地表水酸化的大气沉积的关键假设，（ii）氮气沉积的作用，氮气对生态氮的损失和（III II）的质量造成的氮气摄取以及对生态氮的质量造成（III II）的作用。我们将使用生物地球化学和水文学的长期测量，小流域生态系统方法以及模拟模型来检验这些假设。哈伯德溪（Hubbard Brook）长期研究的一个重要方面是将局部人类引起的土地利用变化和天然森林继承的影响与区域干扰的影响（例如酸雨和气候变化）区分开。