| 琼中黎母山-湾岭地区土壤硒、碘分布特征及其影响因素探讨 |
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| 引用本文： | 龚晶晶,高健翁,杨剑洲,吴慧,唐世新,马生明.琼中黎母山-湾岭地区土壤硒、碘分布特征及其影响因素探讨[J].地质科技通报,2021,40(6):255-267. |
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| 作者姓名： | 龚晶晶 高健翁 杨剑洲 吴慧 唐世新 马生明 |
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| 基金项目： | 中国地质调查局地质调查项目DD20190305 |
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| 摘 要： | 琼中黎母山-湾岭地区位于海南岛中部，调查发现该地区土壤同时具有富硒、富碘的特征。以研究区表层（0~20 cm）、中层（80~100 cm）、深层（180~200 cm）土壤样品分析结果为基础，探讨了土壤硒、碘的分布特征及其影响因素。结果显示，表层土壤中Se、I质量分数具有高正相关性，并与高程为正相关关系，结合已有研究成果，推断在研究区范围内降雨作用是研究区表层土壤Se、I质量分数空间分布格局的关键影响因素。通过分析表层、中层、深层土壤Se、I质量分数与土壤pH值、总有机碳（TOC）、Al2O3、Fe2O3质量分数的相关关系和变化规律，总结了研究区Se、I在土壤垂向剖面上的赋存、迁移规律。这些结果可为当地优质土地资源的高效利用提供科学依据，也可为土壤Se来源、迁移研究提供新的证据。
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| 关 键 词： | 琼中 土壤 硒 碘 降雨 |
| 收稿时间： | 2021-01-05 |
Distribution and influencing factors of soil selenium and iodine in Limushan-Wanling,Qiongzhong area |
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| Abstract: | Qiongzhong Limushan-Wanling area is located in the middle of Hainan Island, where has an abundance of selenium-rich and iodine-rich soil resources.The distribution characteristics of Se and I contents were analyzed based on the analysis results of soil samples in the topsoil (0-20 cm), middle-layer-soil(80-100 cm), and deep-soil (180-200 cm) of the study area.The correlation characteristics of Se and I in soil and their relationship with elevation potentially indicate that the input of rainfall to soil Se and I is a key factor leading to the enrichment of Se and I.By analyzing the correlation and change law between the contents of Se, I and the contents of pH, soil organic matter, Al2O3 and Fe2O3 in top, middle and deep layer soil, the enrichment and migration of Se and I in the vertical section of soil in the study area was summarized.These results can provide scientific basis for the efficient use of local high-quality land resources and provide new evidence for the study of soil Se source and migration. |
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