恩施典型富硒区土壤硒与其他元素组合特征及来源分析
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摘要
硒是重要的人体和动物必需微量元素之一,在功能农业发展中起着重要的作用。为了研究高硒土壤中硒与其他元素组合特征及来源,从而支撑富硒资源的安全有效利用,本研究在恩施市沙地乡系统采集并分析了200个表层土壤样和2组土壤垂向剖面样品,运用统计学工具进行了聚类分析和因子分析。结果表明:研究区表层土壤硒含量平均值为1.88 mg/kg±2.51 mg/kg,明显高于全国表层土壤硒含量平均值。研究区土壤元素组合特征可分为三类,第一类中硒与钼、钒、铬、镉和镍等元素具有较强的伴生关系,与黑色岩系分布密切相关;第二类为三氧化二铝、铅和砷等元素/氧化物,与土壤中黏土矿物有关;第三类为钙和锶等元素,表明该同族元素的地球化学性质具有相似性。因子分析结果进一步证实了土壤硒和镉伴生主要发生在黑色岩系,不同成土母质硒等元素差异较大。
Selenium is one of the important trace elements in humans and animals and plays an important role in the development of functional agriculture. In order to study the combination characteristics and sources of selenium and other elements in high selenium soils to support the safe and effective utilization of selenium-enriched land resources, two hundred topsoil samples and two sets of vertical soil profile samples were collected and analyzed in Shadi Town, Enshi. The topsoil data were interpreted by cluster analysis and factor analysis using statistical tools. The results showed that the arithmetic mean value of selenium content in the topsoil of the study area was 1.88 mg/kg ± 2.51 mg/kg, which was significantly higher than that in the topsoil of the country. Soil element combinations in the study area can be divided into three categories, in the first type, selenium, molybdenum, vanadium, chromium, cadmium, nickel and other elements had strong relationships, and are closely related to the distribution of black rock series; the second type included aluminum oxide, lead and arsenic, which were related to clay minerals in the soil; the third type included calcium and strontium, indicating that the geochemical properties of the same group elements were close to each other. The results of factor analysis further confirmed that the black rock series were the main source of selenium and cadmium in the soil. The differences of element concentrations in various soil parent materials were significant.
Selenium is one of the important trace elements in humans and animals and plays an important role in the development of functional agriculture. In order to study the combination characteristics and sources of selenium and other elements in high selenium soils to support the safe and effective utilization of selenium-enriched land resources, two hundred topsoil samples and two sets of vertical soil profile samples were collected and analyzed in Shadi Town, Enshi. The topsoil data were interpreted by cluster analysis and factor analysis using statistical tools. The results showed that the arithmetic mean value of selenium content in the topsoil of the study area was 1.88 mg/kg ± 2.51 mg/kg, which was significantly higher than that in the topsoil of the country. Soil element combinations in the study area can be divided into three categories, in the first type, selenium, molybdenum, vanadium, chromium, cadmium, nickel and other elements had strong relationships, and are closely related to the distribution of black rock series; the second type included aluminum oxide, lead and arsenic, which were related to clay minerals in the soil; the third type included calcium and strontium, indicating that the geochemical properties of the same group elements were close to each other. The results of factor analysis further confirmed that the black rock series were the main source of selenium and cadmium in the soil. The differences of element concentrations in various soil parent materials were significant.
引文
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[19]曹容浩.福建省龙海市表层土壤硒含量及影响因素研究[J].岩矿测试,2017,36(3):282-288
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[22]周越,吴文良,孟凡乔,等.土壤中硒含量、形态及有效性分析[J].农业资源与环境学报,2014,31(6):527-532
[23]王勤锋,解启来,杨彬,等.硒的土壤化学特性及有效性研究进展[J].湖南农业大学学报(自然科学版),2011,37(2):220-224
[24]梁东丽,彭琴,崔泽玮,等.土壤中硒的形态转化及其对有效性的影响研究进展[J].生物技术进展,2017,7(5):374-380
[25]杨忠芳,余涛,李敏,等.土地质量地球化学评价规范:DZ/T 0295-2016[S].北京:地质出版社,2016:1-52
[26]张文彤,董伟.SPSS统计分析高级教程(第3版)[M].北京:高等教育出版社,2018:1-525
[27]温汉捷,裘愉卓,凌宏文,等.中国早古生代若干高硒黑色岩系中层状硅质岩的地球化学特征及其成因意义[J].沉积学报,2003,21(4):619-626
[28]李家熙,张光弟,葛晓立,等.人体硒缺乏与过剩的地球化学环境特征及其预测[M].北京:地质出版社,2000:1-204
[29]张光弟,葛晓立,张绮玲,等.湖北恩施硒中毒区土壤硒的分布及其控制因素[J].中国地质,2001,28(9):37-41
[30]梁若玉,和娇,史雅娟,等.典型富硒农业基地土壤硒的生物有效性与剖面分布分析[J].环境化学,2017,36(7):1588-1595
[2]Rayman M P.Selenium and human health[J].The Lancet,2012,379(9822):1256-1268
[3]赵其国,尹雪斌.我们的未来农业--功能农业[J].山西农业大学学报(自然科学版),2017,37(7):457-468,486
[4]冯彩霞,刘家军,刘燊,等.硒资源及其开发利用概况[J].地质与资源,2002,11(3):152-156
[5]Riley K W,French D H,Lambropoulos N A,et al.Origin and occurrence of selenium in some Australian coals[J].International Journal of Coal Geology,2007,72(2):72-80
[6]Wang L,Ju Y,Liu G,et al.Selenium in Chinese coals:distribution,occurrence,and health impact[J].Environmental Earth Sciences,2010,60(8):1641-1651
[7]Wang Z,Gao Y.Biogeochemical cycling of selenium in Chinese environments[J].Applied Geochemistry,2001,16(11-12):1345-1351
[8]Winkel L,Vriens B,Jones G,et al.Selenium cycling across soil-plant-atmosphere interfaces:A critical review[J].Nutrients,2015,7(6):4199-4239
[9]Sun G,Meharg A,Li G,et al.Distribution of soil selenium in China is potentially controlled by deposition and volatilization?[R].Scientific Reports,2016,6:20953
[10]王锐,余涛,曾庆良,等.我国主要农耕区土壤硒含量分布特征、来源及影响因素[J].生物技术进展,2017,7(5):359-366
[11]Lv Y,Yu T,Yang Z,et al.Constraint on selenium bioavailability caused by its geochemical behavior in typical Kaschin-Beck disease areas in Aba,Sichuan Province of China[J].Science of the Total Environment,2014,493:737-749
[12]杨忠芳,余涛,侯青叶,等.海南岛农田土壤Se的地球化学特征[J].现代地质,2012,26(5):837-849
[13]罗友进,韩国辉,孙协平,等.三峡库区(重庆段)土壤硒分布特征及影响因素[J].土壤,2018,50(1):131-138
[14]张宝军,钟松臻,龚如雨,等.赣南低丘红壤水稻土硒及其生物有效形态的组成与分布[J].土壤,2017,49(1):150-154
[15]李杰,杨志强,刘枝刚,等.南宁市土壤硒分布特征及其影响因素探讨[J].土壤学报,2012,49(5):1012-1020
[16]迟凤琴,徐强,匡恩俊,等.黑龙江省土壤硒分布及其影响因素研究[J].土壤学报,2016,53(5):1262-1274
[17]黄春雷,宋明义,魏迎春.浙中典型富硒土壤区土壤硒含量的影响因素探讨[J].环境科学,2013,34(11):4405-4410
[18]陈显著,李就好.广州市土壤硒含量的分布及其影响因素研究[J].福建农业学报,2016,31(4):401-407
[19]曹容浩.福建省龙海市表层土壤硒含量及影响因素研究[J].岩矿测试,2017,36(3):282-288
[20]杨良策,李明龙,杨廷安,等.湖北省恩施市表层土壤硒含量分布特征及其影响因素研究[J].资源环境与工程,2015,29(6):825-829
[21]Yu T,Yang Z,Lv Y,et al.The origin and geochemical cycle of soil selenium in a Se-rich area of China[J].Journal of Geochemical Exploration,2014,139:97-108
[22]周越,吴文良,孟凡乔,等.土壤中硒含量、形态及有效性分析[J].农业资源与环境学报,2014,31(6):527-532
[23]王勤锋,解启来,杨彬,等.硒的土壤化学特性及有效性研究进展[J].湖南农业大学学报(自然科学版),2011,37(2):220-224
[24]梁东丽,彭琴,崔泽玮,等.土壤中硒的形态转化及其对有效性的影响研究进展[J].生物技术进展,2017,7(5):374-380
[25]杨忠芳,余涛,李敏,等.土地质量地球化学评价规范:DZ/T 0295-2016[S].北京:地质出版社,2016:1-52
[26]张文彤,董伟.SPSS统计分析高级教程(第3版)[M].北京:高等教育出版社,2018:1-525
[27]温汉捷,裘愉卓,凌宏文,等.中国早古生代若干高硒黑色岩系中层状硅质岩的地球化学特征及其成因意义[J].沉积学报,2003,21(4):619-626
[28]李家熙,张光弟,葛晓立,等.人体硒缺乏与过剩的地球化学环境特征及其预测[M].北京:地质出版社,2000:1-204
[29]张光弟,葛晓立,张绮玲,等.湖北恩施硒中毒区土壤硒的分布及其控制因素[J].中国地质,2001,28(9):37-41
[30]梁若玉,和娇,史雅娟,等.典型富硒农业基地土壤硒的生物有效性与剖面分布分析[J].环境化学,2017,36(7):1588-1595
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