重庆市万州区西部土壤氟地球化学特征及生态效应  

Geochemical characteristics and ecological effects of soil fluorine in Western Wanzhou District,Chongqing City

作　　者：鲍丽然 王佳彬 刘剑锋 李瑜 BAO Li-ran;WANG Jia-bin;LIU Jian-feng;LI Yu(Southeast Sichuan Geological Group,Chongqing Bureau of Geology and Minerals Exploration,Chongqing 400038,China)

机构地区：[1]重庆市地质矿产勘查开发局川东南地质大队,重庆400038

出　　处：《湖北农业科学》2023年第3期35-39,172,共6页Hubei Agricultural Sciences

摘　　要：利用1∶50 000土地质量地质调查数据,分析了三峡库区万州区西部地区土壤氟的地球化学特征,初步评价了氟的生态效应。结果表明,研究区表层土壤氟含量平均值为578.4 mg/kg,略高于全国表层土壤均值,空间分布格局受地层控制作用明显,水平剖面中土壤与岩石样品氟含量呈显著正相关,土壤氟与成土母岩具有较好的继承性。土壤氟地球化学评价结果显示,研究区局部土壤氟过剩,主要分布于三叠系地层区。氟生态效应调查显示,地表水氟含量偏高,但未超出国家标准;部分地区农产品出现氟超标现象,建议高度重视并展开深入研究。Based on the data of 1∶50000 land quality geological survey,the soil fluorine geochemical characteristics and ecological effects were studied,in Western Wanzhou District of Three Gorges Reservoir area.The results showed that the average fluorine content in surface soil in the study area was 578.4 mg/kg,slightly higher than the national average of surface soil.The spatial distribution pat⁃tern of fluorine was obviously controlled by strata,and there was a significant positive correlation between the fluorine content of soil and rock samples in the horizontal section.The fluorine content of soil and parent rock had good inheritance.The soil fluorine geochem⁃ical evaluation showed that the local soil fluorine in the study area was excessive,mainly distributed in the Triassic strata.The investi⁃gation of the fluorine ecological effect showed that the fluorine content in surface water was high,without exceeding the national stan⁃dard,and the fluorine in agricultural products in some areas exceeded the standard,to which great attention and intensive study should be paid.

关 键 词：氟 地球化学特征 生态效应 重庆市万州区 

分 类 号：P596[天文地球—地球化学]