天然放射性核素在土壤-植物系统中的迁移规律及资源化利用途径

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关键词：天然放射性核素；土壤－植物系统；迁移规律；植物修复中图分类号：X53 文献标识码：A 文章编号：1008-9500（2026）03-0107-03DOI：10.3969/j.issn.1008-9500.2026.03.032

Migration Patterns and Resource Utilization Pathways of Natural Radioactive Nuclides in Soil - Plant Systems

LIU Shasha

（ShanxiQinzhou Nuclear and Radiation Safety Technology Co.，Ltd.，Xianyang712O46，China）

Abstract：Inordertorevealthemigrationpatternsofnaturalradioactive nuclides inthesoil-plantsystem，the typical agriculturalareasintheNorthChinaPlain wereselectedtostudytheeffctsofsoilpHvalue，organicmatercontentand plant species on the migration of 238 U， 232η Th and 40K by using multi factor control experiments.The results showed that soil pH value was the dominant factor controlling nuclide migration，with a contribution rate of 68.5% ；different plants exhibit selectiveenrichment characteristics for nuclides，with ryegrass having the strongest enrichment ability for 40K and alfalfa having the highest enrichment efficiency for 238 U.Based on the migration paterns，resource utilization pathways such as targetedplantremediation，potassiumrichbiomassfertlizerconversion，andnucliderecoveryhavebeenproposedtoprovide scientific basis for ecological restoration of radioactive contaminated sites.

Keywords： natural radioactive nuclides; soil-plant system; migration patterns; plant restoration

天然放射性核素在土壤与植物系统中的行为模式对生态系统稳定性有重要作用。（剩余3517字）