滕州表层土壤硒异常特征及来源分析
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摘要
为确定影响滕州地区表层土壤硒含量变化的因素,对研究区土壤的地球化学指标进行统计分析,结果显示,研究区土壤硒背景值为0.08mg/kg,异常下限值为0.17 mg/kg,表层土壤硒平均含量为0.23 mg/kg,标准差为0.144 mg/kg,变异系数为62.6%。综合相关性分析、主成分分析以及富集因子分析结果,表明表层土壤硒异常主要受人为因素的影响。不同区域表层土壤硒含量由高到低依次为煤矿区>交通繁忙区>农田区。在土壤垂直方向上,煤矿周边土壤中硒含量自下而上增加的趋势要明显快于不受煤矿直接影响的区域,同时前者的变化速率和转折端的出现均快于后者。因此,滕州地区表层土壤硒异常主要受煤矿开发的影响。
The soil geochemical data in Tengzhou were analyzed statistically to determine the factors influencing Se content in topsoil. The results showed that the background value of soil Se was 0.08 mg/kg with the lower limit of abnormality was 0.17 mg/kg. The average content of topsoil Se was 0.23 mg/kg with the standard deviation of 0.144 mg/kg and the variation coefficient of 62.6%. The analysis results of soil index correlation, principal components and enrichment factor calculation found that topsoil Se anomaly was mainly influenced by human factors, and topsoil Se contents in different regions was in order of coal mining areas> heavy traffic areas> farmland. In the vertical direction of soil profile, Se content decreased faster in soils around coal mines than in soils not directly affected by coal mines, at the same time, the change rate was greater and the turning point appeared earlier in the former than the latter. Therefore, Se anomaly in topsoil in Tengzhou is mainly affected by coal mining.
The soil geochemical data in Tengzhou were analyzed statistically to determine the factors influencing Se content in topsoil. The results showed that the background value of soil Se was 0.08 mg/kg with the lower limit of abnormality was 0.17 mg/kg. The average content of topsoil Se was 0.23 mg/kg with the standard deviation of 0.144 mg/kg and the variation coefficient of 62.6%. The analysis results of soil index correlation, principal components and enrichment factor calculation found that topsoil Se anomaly was mainly influenced by human factors, and topsoil Se contents in different regions was in order of coal mining areas> heavy traffic areas> farmland. In the vertical direction of soil profile, Se content decreased faster in soils around coal mines than in soils not directly affected by coal mines, at the same time, the change rate was greater and the turning point appeared earlier in the former than the latter. Therefore, Se anomaly in topsoil in Tengzhou is mainly affected by coal mining.
引文
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[2]Pan Z P,He S L,Li C J.Geochemical characteristics of soil selenium and evaluation of Se-rich land resources in the central area of Guiyang City,China[J].Acta Geochim.,2016,13:1-5
[3]Salman S R,Aburuka Y H.Multivariate and principal component statistical analysis of contamination in urban and agricultural soils from north Jordan[J].Environmental Geology,1999,38:265-270
[4]Manta D S,Angelone M,Bellanca A,et al.Heavy metals in urban soils:A case study from the city of Palermo(Sicily),Italy[J].Science of the Total Environment,2002,300:229-243
[5]庞绪贵,陈钰,刘汉栋,等.山东半岛蓝色经济区土壤地球化学基准值与背景值[J].山东国土资源,2014,3(8):25
[6]成杭新,李括,李敏,等.中国城市土壤化学元素的背景值与基准值[J].地学前缘,2014,21(3):266-268
[7]陈健,李正栋,钟皓,等.多种地球化学异常下限确定方法的对比研究[J].地质调查与研究,2014,37(3):188-190
[8]郭笑笑,刘丛强,朱兆洲,等.土壤重金属污染评价方法[J].生态学杂志,2011,30(5):890-892
[9]陈俊坚,张会化,刘鉴明,等.广东省区域地质背景下土壤表层重金属元素空间分布特征及其影响因子分析[J].生态环境学报,2011,20(4):648-649
[10]张春荣,吴正龙,田弘,等.青岛市区大气降尘重金属的特征和来源分析[J].2014,33(7):656-657
[11]王志齐,李宝,胡向辉,等.南四湖沉积物氮磷和有机质分布特征及其相关性分析[J].土壤通报,2013,44(4):871-872
[12]陈吉,赵炳梓,张佳宝,等.主成分分析方法在长期施肥土壤质量评价中的应用[J].土壤,2010,42(3):416-418
[13]曹雪莹,张莎娜,谭长银,等.中南大型有色金属冶炼厂周边农田土壤重金属污染特征研究[J].土壤,2015,47(1):95-97
[14]段雪梅,蔡焕兴,巢文军,等.南京市表层土壤重金属污染特征及污染来源[J].环境科学与管理,2010,35(10):32-34
[15]武旭仁.鲁西南煤矿区重金属元素环境地球化学特征研究[D].武汉:武汉理工大学,2012
[16]朱建明,郑宝山,苏红灿,等.恩施鱼塘坝自然硒的发现及其初步研究[J].地球化学,2001,30(3):236-238
[17]寇小燕,施龙青,尹增德,等.滕南煤田煤矸石对土壤的影响分析[J].能源环境保护,2003,17(2):18-19
[18]李玲,高畅,董洋洋,等.典型煤矿工业园区土壤重金属污染评价[J].土壤通报,2013,44(1):229-230