宁夏大气降尘与表层土壤重金属元素关联性分析及溯源研究  

Correlation Analysis and Traceability Study of Atmospheric Dust Fall and Heavy Metal Element of Surface Soil in Ningxia Hui Autonomous Region

作　　者：孔丽婷 潘占兵[1] 左忠[1] 开建荣 范金鑫 黄婷[1] KONG Li-ting;PAN Zhan-bing;ZUO Zhong;KAI Jian-rong;FAN Jin-xin;HUANG Ting(Ningxia Academy of Sciences Institute of Forestry&Grassland Ecological Agriculture&Forestry,Yinchuan 750002,China;Ningxia Research Institute of Agricultural Products Quality Standards&Testing Technology,Yinchuan 750002,China)

机构地区：[1]宁夏农林科学院林业与草地生态研究所,银川750002 [2]宁夏农产品质量标准与检测技术研究所,银川750002

出　　处：《四川环境》2025年第2期1-8,共8页Sichuan Environment

基　　金：宁夏自然科学基金项目“贺山东麓酿酒葡萄基地土壤粉尘释放特征模拟研究”(2024A2665);宁夏回族自治区重点研发计划项目“贺兰山东麓酿酒葡萄基地防护林防灾减灾效应与营建技术研究”(2024BBF02007);宁夏农业高质量发展和生态保护科技创新示范项目“基于有效防控风蚀的贺兰山沿山葡萄适宜种植区域识别研究”(NGSB-2021-4-3)。

摘　　要：为开展大气降尘元素溯源研究,探索降尘与表层士壤重金属元素之间关联性,在宁夏区域内设置22个监测样点,采集大气降尘和表层土壤样品,并在室内测定分析Ba、Mn、Zn、Ce、Cr、Cu、V、Pb、Ti、Ca、Mg、Fe 12种金属元素含量。结果显示:大气降尘中Ca和Mg的平均含量最大,分别为29.22 g/kg和13.70 g/kg,土壤表层中Ca和Fe的平均含量最大,分别为39.55 g/kg和23.87 g/kg,各监测区大气降尘和表层土壤重金属分布状况存在着明显空间差异,变异系数均在中等变异范围内。灰度关联分析表明,大气降尘与表层土壤关联度有差异性的,关联度系数介于0.5085~0.8017,二者间关联较为紧密。聚类分析法和主成分分析法可知大气降尘中Ba、Ce、Ti、Mg、V为一类,Cr、Cu、Zn、Pb为一类,第三类是Ca、Mn、Fe,主要来自自然源、交通源和工业排放的污染。In order to carry out the traceability research of atmospheric dust fall elements and explore the correlation between dust fall and heavy metal elements in surface soil,22 monitoring samples were set up in Ningxia Hui Autonomous Region,atmospheric dust fall and surface soil samples were collected,and the contents of Ba,Mn,Zn,Ce,Cr,Cu,V,Pb,Ti,Ca,Mg and Fe were determined and analyzed indoors.The results showed that:the average contents of Ca and Mg in atmospheric dust fall were the highest,which were 29.22 g/kg and 13.70 g/kg,the average contents of Ca and Fe in the surface soil were the highest,which were 39.55 g/kg and 23.87 g/kg.There were obvious spatial differences in the distribution of heavy metals in atmospheric dust fall and surface soil in each monitoring area,the coefficient of variation was within the medium variation range.The gray correlation analysis showed that the correlation between atmospheric dust and surface soil was different,and the correlation coefficient was between 0.5085~0.8017,and the correlation between the two was relatively close.According to the cluster analysis and principal component analysis,Ba,Ce,Ti,Mg and V in atmospheric dust fall fell into Class I,Cr,Cu,Zn and Pb fell into Class I,and Ca,Mn and Fe,mainly comes from natural sources,traffic sources and industrial emissions of pollution,fell into ClassⅢ.

关 键 词：大气降尘 重金属 灰度关联分析 富集因子法 聚类分析法 主成分分析法 

分 类 号：X513[环境科学与工程—环境工程]