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

本研究的主要目的是确定水文变化如何影响大沼泽地淡水沼泽的碳动态。涡协方差通量测量将量化碳交换（CO2和CH4）从短期和长期水文周期（淹没的持续时间）沼泽在南部佛罗里达大沼泽地。这些研究结果将有助于更好地理解湿地水文和植被结构的变化如何影响湿地吸收和释放CO2和CH4之间的平衡。大沼泽地流域为研究水文周期对湿地碳平衡的影响提供了一个很好的机会。特别是由于实施大沼泽地综合恢复计划，水管理做法可能在不久的将来发生重大变化。这个分水岭也很重要，因为它的泥炭形成湿地含有脆弱的土壤碳储量。由于湿地生态系统在全球范围内吸收二氧化碳和释放甲烷方面具有重要意义，而且许多湿地生态系统受到土地使用和气候变化的威胁，因此需要进行研究，以便更好地估计它们在区域和全球范围内提供总体碳平衡方面的作用。

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.