Soil salinity in the Yellow River Delta has been changing due to factors like water flow and climate. Researchers used satellite images to study these changes from 1985 to 2018. They created a model to predict soil salt levels, finding that temperature affects salinity more than rainfall. Over time, the amount of heavily salty soil decreased, while mildly salty soil increased. The total area of salty soil grew, with the highest levels in 1995. Temperature increases were linked to higher soil salt content, while river flow from the previous season affected salinity the most.