has part
composed primarily of
marsh
saline marsh
Geonames:H.MRSHN
TGN:21323
A marsh whose water contains a considerable quantity of dissolved salts.
salt marsh
LTER:482
https://en.wikipedia.org/wiki/Saline_marsh
salt marsh
tidal marsh
It would be more correct to say that this has_quality salty or has_part ((soil and water) and has_increased_levels_of salt.
EcoLexicon:salt_marsh
FTT:1190
salting
wetland
FTT:185
water body
saline water