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Carbon Fluxes and Stocks by Mexican Tropical Forested Wetland Soils: A Critical Review of Its Role for Climate Change Mitigation

机译:墨西哥热带森林湿地土壤的碳通量和股票:对其气候变化作用的关键综述

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摘要

Wetland soils are important stores of soil carbon (C) in the biosphere, and play an important role in global carbon cycles in the response strategy to climate change. However, there areknowledge gaps in our understanding of the quantity and distribution in tropical regions. Specifically, Mexican wetlands have not been considered in global carbon budgets or carbon balances for a number of reasons, such as: (1) the lack of data, (2) Spanish publications have not been selected, or (3) because such balances are mainly made in the English language. This study analyzes the literature regarding carbon stocks, sequestration and fluxes in Mexican forested wetlands (Forest-W). Soil carbon stocks of 8, 24.5 and 40.1 kg cm−2 were detected for flooded palms, mangroves, and freshwater or swamps (FW) wetland soils, respectively, indicating that FW soils are the Forest-W with more potential for carbon sinks (p = 0.023), compared to mangroves and flooded palm soils. While these assessments of carbon sequestration were ranged from 36 to 920 g-C m−2 year−1, C emitted as methane was also tabulated (0.6–196 g-C m−2 year−1). Subtracting the C emitted of the C sequestered, 318.2 g-C m−2 year−1 were obtained. Such data revealed that Forest-W function is mainly as carbon sink, and not C source. This review can help to inform practitioners in future decisions regarding sustainable projects, restoration, conservation or creation of wetlands. Finally, it is concluded that Forest-W could be key ecosystems in strategies addressing the mitigation of climate change through carbon storage. However, new studies in this research line and public policies that protect these essential carbon sinks are necessary in order to, hopefully, elaborate global models to make more accurate predictions about future climate.
机译:湿地土壤是生物圈中土壤碳(C)的重要商店,在应对策略中对气候变化的反应策略中发挥着重要作用。但是,我们对热带地区的数量和分配的理解有了了解差距。具体而言,由于许多原因,墨西哥湿地未被审议全球碳预算或碳余额,例如:(1)缺乏数据,(2)尚未选择西班牙语出版物,或(3),因为此类余额是如此主要用英语制作。本研究分析了墨西哥森林湿地(Forest-W)的碳储量,封存和势态的文献。检测到8,24.5和40.1kg cm-2的土壤碳股,分别检测到淹没的棕榈树,红树林和淡水或沼泽地(FW)湿地土壤,表明FW土壤是森林-W,碳汇具有更多潜力(P与红树林和洪水棕榈土相比,= 0.023)。虽然这些碳封存的评估范围为36至920g-C m-2年-1,C,因为也表明甲烷发出的C(0.6-196g-C m-2岁-1)。减去C的C被隔离的C,获得318.2g-C m-2年-1。这些数据显示,森林-W功能主要是碳汇,而不是C源。该审查可以帮助从业人员在未来的决定中,恢复,保护或创造湿地。最后,得出结论,森林-W可以是解决通过碳储存减轻气候变化的战略的主要生态系统。然而,这一研究线的新研究和保护这些必需碳汇的公共政策是必要的,以便希望能够精心制定全球模型,以便更准确地预测对未来的气候。

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