OPUS: Synthesis of 25 Years of Research on the Biogeochemistry of a Tropical Rain Forest

OPUS：热带雨林生物地球化学 25 年研究综述

• 批准号: 0816727
• 负责人: William McDowell
• 金额: $ 15万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0816727&HistoricalAwards=false
• 关键词: OPUS; Synthesis; 25; Years; Research

Tropical forests play an important role in the global cycles of carbon, nutrients, and trace gases that affect global warming. Despite the significance of tropical forests globally, few studies have examined the long-term inputs of carbon and nutrients in rain, or their export in stream water. Drinking water quality and the health of downstream rivers, coastal zones and coral reefs are strongly affected by the delivery of carbon and nutrient from mountainous tropical watersheds. Understanding how the cycling of carbon and nutrients in these mountainous watersheds responds to catastrophic disturbances (e.g. hurricanes) as well as long-term climate changes is critical for their effective management.This project will synthesize twenty-five years of data collected by the lead investigator and his colleagues on the biogeochemical cycles of watershed ecosystems in the Luquillo Mountains of Puerto Rico. This includes 40 published papers describing rain chemistry, stream chemistry, and controls on the delivery of nitrogen and other elements to downstream ecosystems. The proposed synthesis will have two primary outputs including a series of papers describing long-term patterns in elemental inputs and outputs from the study watersheds, and a book entitled Biogeochemistry of a Tropical Forest Ecosystem. The book will focus on understanding the importance of soils, rock weathering, vegetation, riparian zones, and disturbance in shaping stream chemistry.

热带森林在影响全球变暖的碳、养分和微量气体的全球循环中发挥着重要作用。 尽管热带森林在全球范围内具有重要意义，但很少有研究考察雨水中碳和养分的长期输入或溪流中的输出。 山区热带流域输送的碳和养分严重影响饮用水质量以及下游河流、沿海地区和珊瑚礁的健康。 了解这些山区流域的碳和养分循环如何应对灾难性干扰（例如飓风）以及长期气候变化对于其有效管理至关重要。该项目将综合首席研究员收集的二十五年的数据和他的同事研究波多黎各卢基约山脉流域生态系统的生物地球化学循环。 其中包括 40 篇发表的论文，描述雨水化学、溪流化学以及向下游生态系统输送氮和其他元素的控制。 拟议的综合将有两个主要成果，包括一系列描述研究流域元素输入和输出的长期模式的论文，以及一本题为《热带森林生态系统的生物地球化学》的书。本书将重点了解土壤、岩石风化、植被、河岸带和扰动在形成河流化学方面的重要性。