Beyond burial: redefining the blue carbon paradigm

该项目旨在限制红树林中碱度和温室气体通量的大小和驱动因素。红树林覆盖不到地球表面的0.03%，但却占海洋碳埋藏量的约14%。红树林还向沿海海洋输出碱度，并成为甲烷和一氧化二氮的来源。这些通量对气候的影响可能超过碳埋藏数倍，但在蓝色碳预算中未得到考虑。该项目将把土壤碳循环的高分辨率放射性核素地质年代学与水产出口和温室气体通量的自主测量结合起来。这项研究将提供完善蓝碳范式所需的详细数据。

This project aims to constrain the magnitude and drivers of alkalinity and greenhouse gas fluxes in mangroves. Mangroves cover less than 0.03 per cent of the Earth’s surface yet account for approximately 14 per cent of oceanic carbon burial. Mangroves also export alkalinity to the coastal ocean, and act as sources of methane and nitrous oxide. The effect of these fluxes on climate may exceed carbon burial by several-fold, but are unaccounted for in blue carbon budgets. This project will couple high-resolution radionuclide geochronology of soil carbon cycling with autonomous measurements of aquatic exports and greenhouse gas fluxes. This study will provide the detailed data required to refine the blue carbon paradigm.