西安市高陵区土壤重金属污染现状分析  

Analysis on the Current Situation of Heavy Metal Contamination in Soils in Gaoling District of Xi’an City

作　　者：殷宗敏 殷宗奇 何文熹[1] YIN Zong-min;YIN Zong-qi;HE Wen-xi(Wuhan Geological Survey Center of China Geological Survey,Wuhan,Hubei 430205;School of Computer and Control Engineering,Northeast Forestry University,Harbin,Heilongjiang 150040)

机构地区：[1]中国地质调查局武汉地质调查中心,湖北武汉430205 [2]东北林业大学计算机与控制工程学院,黑龙江哈尔滨150040

出　　处：《安徽农业科学》2025年第4期47-52,共6页Journal of Anhui Agricultural Sciences

摘　　要：通过分析高陵区土壤中汞(Hg)、砷(As)、镉(Cd)、铬(Cr)、铅(Pb)含量,采用单因子污染指数法进行污染等级划分,并进行不同元素间相关分析。结果表明:高陵区Hg、As、Cd、Pb含量正态分布呈现左偏,Cr含量呈现右偏。各元素含量排序为Cr>Pb>As>Cd>Hg。Hg元素存在分布中心,含量由中心向周边递减;As和Cr元素不存在分布中心。Hg分布存在安全和轻污染级,As分布存在安全和轻污染级,Cd分布存在安全、轻污染和中污染级,Cr分布存在安全和轻污染级,Pb分布存在安全、轻污染和中污染级,其中Hg、Cd、Pb的分布特征较相似,在药惠乡部分区域均存在较重污染。Hg与As存在中度负相关,与Cd、Cr存在中度正相关,与Pb存在弱正相关性;As与Cd、Cr均存在弱负相关性;Cd与Cr存在弱正相关,与Pb均存在强正相关性;Cr与Pb存在中度正相关。综上,高陵区土壤存在重金属污染,应加强治理。By analyzing the content of mercury(Hg),arsenic(As),cadmium(Cd),chromium(Cr),and lead(Pb)in the soil of Gaoling District,the pollution level was classified using the single factor pollution index method,and the correlation analysis between different elements was conducted.The results showed that the normal distribution of Hg,As,Cd and Pb content in Gaoling District showed a left skewed pattern,while the Cr content showed a right skewed pattern.The order of element content was Cr>Pb>As>Cd>Hg.Hg element existed in the distribution center,and its content decreased from the center to the periphery;there was no distribution center for As and Cr elements.The distribution of Hg had safety and light pollution levels,the distribution of As had safety and light pollution levels,the distribution of Cd had safety,light pollution and medium pollution levels,the distribution of Cr had safety and light pollution levels,the distribution of Pb elements had safety,light pollution and medium pollution levels.Among them,the distribution characteristics of Hg,Cd and Pb were relatively similar,and there was heavy pollution in some areas of Yaohui Township.Hg had a moderate negative correlation with As,a moderate positive correlation with Cd and Cr,and a weak positive correlation with Pb.There was a weak negative correlation between As and Cd,Cr;Cd had a weak positive correlation with Cr and a strong positive correlation with Pb.There was a moderate positive correlation between Cr and Pb.In summary,there was heavy metal pollution in the soil of Gaoling District,and efforts should be made to strengthen its management.

关 键 词：土壤重金属 单因子污染指数法 安全分级 空间分析 相关性 高陵区 

分 类 号：X53[环境科学与工程—环境工程]