Fig. 2From: Spatial distribution of halophytes and environment factors in salt marshes along the eastern Yellow SeaParts of the field survey. a Briefly, 1 × 1 m2 quadrats were used to survey coverages and heights of species. b Vegetation maps were constructed with network-RTK GPS. c A map showing the Suaeda japonica distribution by merging images obtained by a drone. North is on the leftBack to article page