CAJ | 학술논문

为明确城市化进程对城郊土壤质量的影响，以许昌市城郊耕地表层土壤为研究对象，利用 X射线荧光光谱仪测定土壤重金属含量，在此基础上采用主成分分析和相关分析方法对 Cr、Mn、Co、Ni、Cu、Zn、As和 Pb 等8种重金属元素的含量及空间分布特征，来源及其相互关系进行研究。结果表明：1）Cr、Cu、Zn和Pb的含量分别为河南省土壤背景值的1．11倍、1．23倍、1．41倍和1．31倍，除个别样点外，4种元素的整体超标量均较小，但在研究区内空间分布差异较大。2）Ni、Cr、Cu、Zn和Pb均具有明显的高值带和高值区，而Co、As和Mn的含量接近于河南省土壤背景值，且分布较均匀，空间差异不大。3）Mn、Ni、As和Co的含量主要受成土母质的影响，Cr、Cu和Pb除受成土母质影响外可能还受人为因素的影响，Zn的含量则主要受交通干道分布影响。元素间不同的相关性、方差贡献率及与背景值的差异说明，Ni-Mn-As-Co、Cr-Cu-Pb和Zn的来源各不相同。
위명학성시화진정대성교토양질량적영향，이허창시성교경지표층토양위연구대상，이용 X사선형광광보의측정토양중금속함량，재차기출상채용주성분분석화상관분석방법대 Cr、Mn、Co、Ni、Cu、Zn、As화 Pb 등8충중금속원소적함량급공간분포특정，래원급기상호관계진행연구。결과표명：1）Cr、Cu、Zn화Pb적함량분별위하남성토양배경치적1．11배、1．23배、1．41배화1．31배，제개별양점외，4충원소적정체초표량균교소，단재연구구내공간분포차이교대。2）Ni、Cr、Cu、Zn화Pb균구유명현적고치대화고치구，이Co、As화Mn적함량접근우하남성토양배경치，차분포교균균，공간차이불대。3）Mn、Ni、As화Co적함량주요수성토모질적영향，Cr、Cu화Pb제수성토모질영향외가능환수인위인소적영향，Zn적함량칙주요수교통간도분포영향。원소간불동적상관성、방차공헌솔급여배경치적차이설명，Ni-Mn-As-Co、Cr-Cu-Pb화Zn적래원각불상동。
The content,spatial distribution,source and mutual relation of Cr,Mn,Co,Ni,Cu,Zn, As and Pb in suburb arable topsoil were analyzed by X-ray fluorescence spectrometer(XRF),principle component analysis(PCA)and correlation analysis methods to study the effect of urbanization process on suburb soil quality in Xuchang City.The results showed that:1)The Cr,Cu,Zn and Pb content is 1.11, 1.23,1.41 and 1.31 times that of the soil background value in Henan.Except for individual sampling sites,the overall super-scale of four heavy metals is small but there is obvious difference in spatial distribution;2)Ni,Cr.Cu and Pb all have obvious high value areas and zones as well as the content of Co, As and Mn is closed to the soil background value and there is no difference in spatial distribution;3)The content of Mn,Ni,As and Co is mainly affected by parent material.The content of Cr,Cu and Pb is not only affected by parent material,but also by human factor.Zn content is affected by distribution of traffic artery;Different correlation coefficients,variance contribution rate and difference with background value indicate that Ni-Mn-As-Co,Cr-Cu-Pb and Zn are from different sources.