Lub ntsiab tseem ceeb uas cuam tshuam rau salinity ntawm dej hiav txwv yog:
1. Kev sib raug zoo ntawm nag lossis daus thiab evaporation. Cov nag lossis daus loj tshaj qhov evaporation, cov salinity tsawg;
2. Cov cheeb tsam hiav txwv uas muaj cov dej sov sov muaj cov dej qab ntsev ntau dua, thiab thaj chaw hiav txwv uas muaj cov dej txias muaj qis dua;
3. Cov dej qab ntsev ntawm thaj chaw hiav txwv uas cov dej tshiab tau txhaj ntau yog tsawg;
4 Qhov ntau kaw cov duab ntawm thaj chaw hiav txwv, qhov salinity ntau yuav zoo li siab dua lossis qis dua.
