Fig. 1: Temporal trends in salt marsh surface soil organic carbon (SOC) across different scales (2002–2019).
From: Global blue carbon losses from salt marshes exceed restoration gains
a Net surface SOC in countries with salt marsh changes, b surface SOC changes at the continental scale, c–f trends of surface SOC changes in major countries. The “Global Average” category in b includes six continents where salt marshes are distributed (middle to high latitudes): Africa, Asia, Europe, North America, Oceania, and South America, excluding Antarctica. Notable fluctuations in surface SOC occurred in North America, Asia, Europe, and Oceania, prompting the selection of four countries with large salt marsh areas: Australia (Oceania), China (Asia), Romania (Europe), and the United States of America (North America) to represent SOC trends in these regions.
