(CAREER) Metals Transport in Transition Wetlands: Research and Education Development Plan

（职业）过渡湿地中的金属运输：研究和教育发展计划

• 批准号: 9629259
• 负责人: Heidi Nepf
• 金额: $ 20万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-03-01 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9629259&HistoricalAwards=false
• 关键词: CAREER; Metals; Transport; Transition; Wetlands

9629259 Nept The limnology and wetland research communities have recently selected metals transport as an area for priority research (In The Freshwater Imperative, Naiman et al. 1995). This treaties calls attention to the need for transport models that can predict the short-and long-term fate of metals contamination in freshwater ecosystems. Wetlands, an intrinsic part of most freshwater systems, have been observed to trap and store particulate metals, and thus can influence metals flux. However, the specific factors which control this trapping and potential re-release are not yet fully understood. In particular, the following questions still need to be clarified What factors control the short-and long-term trapping of metals in wetland? How does vegetation influence the trapping and shortage of metals? How and when are major release or re-suspension events triggered? The proposed project will address these questions through complementary field observation and modeling programs. The results will strengthen the knowledge base needed to design and manage wetlands in order to alleviate the impact of metals contamination on freshwater systems. The educational goals of this project emphasize the incorporation of environmental engineering case studies and current academic research into the undergraduate curriculum. The first goal is to create case study instruction based on actual engineering problems drawn from the case files of local engineering firms. The case study approach exposes student to the complexity of real systems, and demonstrates the relevance of the course material. The second educational goal is to provide undergraduates with more opportunities to assist with and/or conduct their own field research. Four field projects are proposed that can be conducted annually as an extension to existing undergraduate courses. These hands-on research experiences will build physical intuition and creativity, as well as provide a forum for developing team-work skill s. The field projects are designed to dovetail with the proposed academic research so that the undergraduates can draw from a larger research scheme to supplement their own observations. The research and educational goals both emphasize the study and protection of freshwater systems. The research program will focus on improving the prediction of metals transport and the remediation of metals contamination. the teaching program will introduce undergraduates to the complex and interdisciplinary nature of wetland field study and environmental engineering design projects.

小行星9629259 湖沼学和湿地研究界最近选择金属迁移作为优先研究领域（在《淡水的必要性》中，Naiman等人，1995年）。 该条约呼吁人们注意需要能够预测淡水生态系统中金属污染的短期和长期命运的迁移模型。 湿地是大多数淡水系统的固有组成部分，已被观察到捕获和储存颗粒金属，从而影响金属通量。 然而，控制这种捕获和潜在再释放的具体因素尚未完全了解。 特别是以下几个问题仍需澄清 哪些因素控制着湿地中金属的短期和长期捕获？ 植被如何影响金属的捕获和短缺？ 重大发行或重新停牌事件如何以及何时触发？ 拟议的项目将通过补充实地观察和建模方案来解决这些问题。 研究结果将加强设计和管理湿地所需的知识基础，以减轻金属污染对淡水系统的影响。 该项目的教育目标强调将环境工程案例研究和当前的学术研究纳入本科课程。 第一个目标是根据从当地工程公司的案例文件中提取的实际工程问题创建案例研究指导。 案例研究方法使学生接触到真实的系统的复杂性，并展示课程材料的相关性。 第二个教育目标是为本科生提供更多的机会，以协助和/或进行自己的实地研究。 四个实地项目，建议可以每年进行现有的本科课程的延伸。 这些动手研究经验将建立物理直觉和创造力，以及为发展团队合作技能提供一个论坛。 实地项目的设计与拟议的学术研究相吻合，使本科生可以从一个更大的研究计划，以补充自己的观察。 研究和教育目标都强调研究和保护淡水系统。 该研究计划将侧重于改善金属运输的预测和金属污染的修复。 该教学计划将向本科生介绍湿地实地研究和环境工程设计项目的复杂性和跨学科性质。