安徽池州地区富硒土壤地球化学特征及成因分析  

Geochemical Characteristics and Genesis Analysis of Selenium-rich Soils in Chizhou Area,Anhui Province

作　　者：梁红霞[1] 侯克斌[1] 陈富荣[1] 吴正方[2] Liang Hongxia;Hou Kebin;Chen Furong;Wu Zhengfang(Geological Survey of Anhui Province,Hefei,Anhui 230001;No.324 Unit, Bureau of Geology and Mineral Exploration of Anhui Province,Hefei,Anhui 247100)

机构地区：[1]安徽省地质调查院(安徽省地质科学研究所),安徽合肥230001 [2]安徽省地质矿产勘查局324地质队,安徽池州247100

出　　处：《资源环境与工程》2022年第2期154-162,共9页Resources Environment & Engineering

基　　金：安徽省江淮流域生态地球化学调查(1212010511205);淮河皖江经济区土地质量地球化学调查(DD20160322);池州市富硒土壤资源地球化学调查(2016-g-3-13)。

摘　　要：基于安徽省多目标区域地球化学调查及池州市富硒土壤资源地球化学调查工作,对池州地区表层土壤硒分布特征及其影响因素进行研究。结果表明,该区表层土壤硒含量平均值为0.470 mg/kg,明显高于江淮流域平均值(0.290 mg/kg),富硒土壤资源丰富。不同地层分布区土壤硒含量差异较大,二叠系栖霞组—大隆组灰岩、硅质岩、硅质页岩、钙质页岩分布区土壤硒含量最高(平均值为1.106 mg/kg),白垩系徽州组砂砾岩、钙质砂岩、钙质粉砂岩分布区土壤硒含量最低(平均值为0.226 mg/kg),地质背景(岩石分布)对土壤硒含量及分布起控制作用。同时发现土壤类型、土地利用方式、土壤pH以及有机质含量是影响池州市土壤硒含量的重要因素。区内石质土硒含量最高,但分布极少,红壤和石灰岩土是区内主要的储硒类型。此研究成果对池州市土地的合理规划利用、富硒产业的科学发展具有重要指导意义。Based on the multi-objective regional geochemical survey in Anhui Province and the geochemical survey of selenium-rich soil resources in Chizhou City,the distribution characteristics of selenium in surface soil and its influencing factors in Chizhou area are studied.The results show that selenium contents in test soils have an average of 0.470 mg/kg,which is higher than that of Yangtze River and Huaihe River(0.290 mg/kg),selenium-rich soil is rich in resources.The soil selenium content varies greatly in different stratigraphic distribution areas.The contents of selenium are relatively high with an average of 1.106 mg/kg in soils developed on limestone,siliceous rock,siliceous shale and calcareous shale of Permian Qixia Formation-Dalong Formation and are relatively low with an average of 0.226 mg/kg in soils developed on glutenite,calcareous sandstone,calcareous siltstone of the Cretaceous Huizhou Formation.Geological background(rock distribution)plays a controlling role in soil selenium content and distribution.At the same time,it is found that soil type,land use pattern,soil pH and organic matter content are important factors affecting the selenium content of soil in Chizhou City.The content of selenium in calcareous soil is the highest,but the distribution is very small.Red soil and limestone soil have monderate selenium content.The research results have guiding significance for the rational planning and utilization of land in Chizhou City and the scientific development of selenium-enriched industry.

关 键 词：富硒土壤 地球化学特征 硒的来源 成土母质 池州市 

分 类 号：S158[农业科学—土壤学] P632[农业科学—农业基础科学]