Collaborative Research: Dynamics of Ecosystem Carbon Dioxide and Methane Fluxes from the Florida Everglades--Effects of Hydrology and Vegetation on the Net Radiative Forcing

合作研究：佛罗里达大沼泽地生态系统二氧化碳和甲烷通量的动态——水文和植被对净辐射强迫的影响

• 批准号: 1233011
• 负责人: Steven Oberbauer
• 金额: $ 24.63万
• 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: 2013
• 资助国家: 美国
• 起止时间: 2013-05-15 至 2016-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1233011&HistoricalAwards=false
• 关键词: Collaborative; Research; Dynamics; Ecosystem; Carbon

The primary objective of this study is to determine how alterations in hydrology impact the carbon dynamics of Everglade fresh water marshes. Eddy covariance flux measurements will quantify carbon exchange (CO2 and CH4) from both short and long hydroperiod (the duration of inundation) marshes in the southern Florida Everglades. The expected results of these studies will lead to an improved understanding of how changes in wetland hydrology and vegetation structure influence the balance between the uptake and release of CO2 and CH4.The Everglade watershed provides an excellent opportunity to study the effects of hydroperiod on wetland carbon balance, especially since water management practices are likely to change substantially in the near future due to the implementation of the Comprehensive Everglades Restoration Plan. This watershed is also important due to its peat-forming wetlands that contain vulnerable stocks of soil carbon. Because wetland ecosystems are of great significance globally in sequestering carbon dioxide and releasing methane, and many are threatened by changes in land use and climate, research is needed to provide better estimates of their role in providing an overall carbon balance on regional and global scales.

这项研究的主要目的是确定水文学的变化如何影响大沼泽淡水沼泽的碳动态。 Eddy协方差通量测量结果将从佛罗里达州南部Everglades的短和长水上（淹没的持续时间）量化碳交换（CO2和CH4）。这些研究的预期结果将进一步了解湿地水文和植被结构的变化如何影响二氧化碳和释放二氧化碳和CH4之间的平衡。经漫使流域提供了一个很好的机会来研究水面对湿地碳平衡的影响，尤其是因为由于实施了全面的竞争计划，因此水管理实践可能会实质性地变化。该分水岭也很重要，因为它的泥炭形成湿地含有脆弱的土壤碳库存。由于湿地生态系统在隔离二氧化碳和释放甲烷方面在全球范围内具有重要意义，并且许多人受土地使用和气候变化的威胁，因此需要进行研究以更好地估算其在为区域和全球尺度提供整体碳平衡方面的作用。