“The issue of spatiotemporal inconsistency in global forest aboveground biomass products is prominent, with significant differences in the global carbon storage and carbon sink revealed by different products. Experts systematically evaluated multi-source forest aboveground biomass products from three dimensions: spatial consistency, interannual variation trend analysis, and ground validation, providing scientific basis for the optimization and fusion application of remote sensing biomass products in interannual variation estimation, and improving their reliability and applicability in carbon monitoring and ecological assessment.”