Fluorinein aquatic environmentin the western region of Songnen Plain
松嫩平原西部地区水环境中氟的研究

Inthe western region of Songnen Plain,the distribution offluorinein aquaticenvironmentis thatthefluorinecontentinlake waterandunconfined waterishigherthanthatinriver waterandconfined water.Lake water(saltlake)iscontrolledandsuppliedbyunderground water.Theisogram ofthefluorine contentin underground waterinthe western plain ofJilin Provinceshowsthatthefluorinecontentalter nates with high andlow fluorinecontentin unconfined water.Thethree dimensionaldiagram ofthefluo rinecontentshowsthatthetrend ofthefluorine content distribution is thatit gradually decreasesfrom eastandsoutheastto westand northwestinthe westernregionoftheSongnen Plain.Thefluorinein water comesfrom the weathering ofrocksand mineralsinthe mountainsaroundthe Songnen Plain.Underthe influencesof naturallandscape difference,localclimate,hydrochemistry characteristicsandthe strong soil soda salinization,theregion with high fluorine contentin unconfined waterisformed.In the region,the fluorinecontentin drinking waterisevidentlycorrelatedtothe morbidity offluorosis(dentalandskeletal fluorosis).