【摘要】 本文报道了云南省江河、湖泊、水库、泉（温泉）、井和自来水中天然放射性核素浓度的调查结果。全省共布设采样点２２３个，采集平、枯、丰三期水样３４４个。调查结果表明，云南省各类水体中天然放射性核素浓度基本属正常本底水平。更多还原

【Abstract】 This paper reports the investigation results of natural radioactivity level in river,lake,reservoir,spring,well,offshore water and tap water in Yunnan Province. There weretotally 344 samples collected from 223 measuring points.The results show that the radioac- tivity level of varied water bodies of the province was within normal natural background.更多还原