Mangroves provide multiple ecosystem services and are essential for mitigating global warming owing to their capacity to store large carbon (C) stocks. Due to widespread mangrove degradation, actions have been implemented to restore them worldwide. An important representative case in Colombia is the Ciénaga Grande de Santa Marta’s restoration plan. This management intervention focused on restoring the natural hydrological functioning after massive mangrove mortality (~25,000 ha) due to soil hyper-salinization after river water input from the Magdalena River was eliminated. A partial recovery occurred during subsequent years, and hydrological management is still being implemented today. To understand how the degradation and subsequent management have affected mangrove C stocks, we compared C stocks in stands with different intervention levels reflected in their current forest structure. We found that the total C stock (398–1160 Mg C ha⁻¹) was within the range measured in other neotropical mangroves without vegetation deterioration. The aboveground C was significantly higher in the stands where hydraulic connectivity was restored. By contrast, the belowground C was higher in the stands with low hydraulic connectivity due to channel clogging and a lack of sufficient maintenance. Our results show that hydrological management measures influenced above- and belowground C stocks, even at a 2 m depth. In addition, a strong indirect relationship useful for estimating carbon content from organic matter content was found.

中文翻译：

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恢复行动对环礁泻湖中的有机碳库的影响-哥伦比亚加勒比海CiénagaGrande de Santa Marta

红树林提供多种生态系统服务，由于其具有储存大量碳（C）的能力，因此对于缓解全球变暖至关重要。由于红树林的普遍退化，已采取行动在全球范围内对其进行恢复。哥伦比亚的一个重要代表案例是圣玛尔塔城堡的修复计划。这项管理干预措施的重点是在取消从玛格达莱纳河输入的河水后，土壤过度盐化导致的大量红树林死亡（约25,000公顷）后恢复自然水文功能。在随后的几年中发生了部分恢复，并且今天仍在实施水文管理。要了解退化和后续管理如何影响红树林碳库，我们比较了林木中具有不同干预水平的林木碳库，这些林木反映了它们的当前森林结构。我们发现总碳储量（398–1160 Mg C ha^-1）在没有植被退化的其他新热带红树林中测得的范围内。在恢复了液压连通性的看台中，地上C明显更高。相比之下，由于通道堵塞和缺乏足够的维护，在液压连通性较低的林地中，地下C较高。我们的结果表明，即使在2 m的深度，水文管理措施也会影响地上和地下的碳储量。此外，还发现了一种强的间接关系，可用于根据有机物含量估算碳含量。