Water and Chemical Budgets for Two Tropical Rainforest Watersheds (SGER)

两个热带雨林流域的水和化学品预算 (SGER)

• 批准号: 9800129
• 负责人: David Genereux
• 金额: $ 4.95万
• 依托单位: Florida International University
• 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: 1998-03-15 至 1999-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9800129&HistoricalAwards=false
• 关键词: Water; Chemical; Budgets; Two; Tropical

9800129 Genereux The goal of the short-term project proposed here is to establish and begin monitoring the first permanent, high-quality streamflow measurement sites at La Selva Biological Station in Costa Rica, the best-studied (with respect to ecology) and best-equipped field research station in the rapidly disappearing lowland tropical rainforest of Central America. The data will be used to: produce the first high-quality hydrologic budgets for two small watersheds at La Selva (this aspect is time-sensitive, in that it relies on linking up with ongoing measurements of rainfall and ET which are being carried out by other researchers and are funded for a specific period of time) test the hydrologic hypothesis, generated solely from geochemical data, that a significant portion of streamflow on one of the watersheds is the result of subsurface interbasin transfer of high-solute geothermal groundwater into the watershed begin production of chemical budgets (input and output) for the watersheds, recognizing that part of the input is probably in the subsurface (we expect the hypothesis above concerning geothermal groundwater to be accepted) begin preliminary, quantitative assessment of whether there are significant ecological differences that can be reliably attributed to hydrologic differences between the watersheds (this relies on ecological work being carried out by Catherine Pringle at the University of Georgia with separate funding).

9800129总干事这里提议的短期项目的目标是在哥斯达黎加的La Selva生物站建立并开始监测第一个永久性的高质量径流测量站，这是中美洲迅速消失的低地热带雨林中研究最深入(就生态学而言)和装备最好的实地考察站。这些数据将被用来：为La Selva的两个小流域编制第一次高质量的水文预算(这方面是时间敏感的，因为它依赖于与正在进行的降雨量和ET测量的联系，这些测量正在由其他研究人员进行，并在特定时间段内得到资助)，检验仅由地球化学数据产生的水文假说，即其中一个流域的很大一部分径流是高溶质地热地下水地下流域间转移到该流域的结果。开始为该流域生产化学预算(输入和输出)，认识到部分投入可能在地下(我们预计上述关于地热地下水的假设将被接受)，开始初步、定量地评估是否存在重大的生态差异，这些差异可以可靠地归因于流域之间的水文差异(这取决于乔治亚大学的凯瑟琳·普林格尔用单独的资金开展的生态工作)。