Several ecological factors, including hydrology, soil type, and vegetation, influence wetland soil carbon (C) storage, but the relationship among these factors is complex making it difficult to evaluate the potential for increased C storage in natural and restored systems. This study investigated the relationship between hydrologic variables, wetland plant communities, and wetland soil C storage in the upper 50 cm of soil in three wetland community types (bay swamp, cypress swamp, freshwater marsh) in a hydrologically restored subtropical landscape in central Florida, USA. Mean water table depth relative to ground elevation was a better predictor than hydroperiod of surface soil C stock and was positively related to soil C stock in marshes. However, the overall effect of water table depth was small and was often outweighed by other factors including wetland vegetation type and local site conditions. Bay swamps had the highest soil C stock, followed by cypress swamp, marsh, and upland ecotone, respectively. This study highlights the importance of understanding the interplay among multiple factors that drive variation in soil C stock within and among wetland types in these landscapes, and the importance of deeper soil layers to wetland soil C storage at the landscape scale.

若干生态因素，包括水文、土壤类型和植被，会影响湿地土壤碳 (C) 储存，但这些因素之间的关系很复杂，因此很难评估自然和恢复系统中增加碳储存的潜力。本研究调查了佛罗里达州中部水文恢复的亚热带景观中三种湿地群落类型（海湾沼泽、柏树沼泽、淡水沼泽）的水文变量、湿地植物群落和湿地土壤碳储量之间的关系。美国。相对于地面高程的平均地下水位深度是比表层土壤 C 库的水周期更好的预测因子，并且与沼泽中的土壤 C 库呈正相关。然而，地下水位深度的总体影响很小，并且经常被其他因素所抵消，包括湿地植被类型和当地场地条件。海湾沼泽的土壤碳储量最高，其次是柏树沼泽、沼泽和高地交错带。本研究强调了了解驱动这些景观中湿地类型内部和之间土壤碳储量变化的多种因素之间相互作用的重要性，以及更深的土壤层对景观尺度上湿地土壤碳储存的重要性。