摘要
为掌握新疆吐鲁番盆地葡萄园土壤重金属分布与来源情况,采集101个葡萄园土壤样品,分析其中As、Cd、Cr、Ni、Pb和Hg 6种元素的含量。基于GIS技术分析重金属元素空间分布特征,采用相关分析法和主成分分析法区分葡萄园土壤重金属的主要来源。结果表明,吐鲁番盆地葡萄园土壤中6种元素平均含量均低于GB 15618—2018《土壤环境质量农用地土壤污染风险管控标准(试行)》中的筛选值,但As、Cd、Cr和Hg含量平均值分别为新疆灌耕土背景值的1.05、1.58、1.49和1.15倍。葡萄园土壤中6种元素含量空间分布差异较大。As含量高值区分布于研究区东部,Cd含量高值区分布于研究区西南部,Cr含量高值区分布于研究区中部,Ni含量呈点状分布,Pb和Hg含量高值区分布于人口和交通相对密集的区域。从来源来看,葡萄园土壤中As、Cr与Ni主要以自然源为主,Cd、Pb与Hg主要以人为源为主。
In order to understand the distribution and sources of heavy metals in vineyard soil in Turpan Basin,Xinjiang,a total of 101 soil samples were collected from vineyards,and analyzed for the concentrations of six heavy metal elements,i.e.As,Cd,Cr,Ni,Pb,and Hg.The spatial distribution of heavy metals in vineyard soils was analyzed based on the GIS technology,while the main sources were analyzed using correlation analysis and principal component analysis.Obtained results indicate that the average concentrations of the six elements in vineyard soil in Turpan Basin were lower than the limits of the National Soil Environmental Quality Standards(GB 15618-2018),but the average concentrations of As,Cd,Cr,and Hg were 1.05,1.58,1.49,and 1.15 times as the background values of irrigated soil in Xinjiang,respectively.The spatial distribution patterns of the six elements of vineyard soil in Turpan were substantially heterogeneous.In the case of As,the high concentrations were observed mainly in the eastern areas,whereas Cd was most concentrated in the southwestern area and Cr was most concentrated in the central areas.A dot-distributed pattern was discerned for Ni,whereas Pb and Hg were most concentrated in the areas with relatively dense population and traffic in the study area.As,Cr,and Ni elements in vineyard soil are mainly from natural sources,whereas Cd,Pb,and Hg elements are mainly from anthropogenic sources.
作者
麦尔哈巴·图尔贡
麦麦提吐尔逊·艾则孜
王维维
Marhaba TURHUN;Mamattursun EZIZ;WANG Wei-wei(College of Geographical Science and Tourism,Xinjiang Normal University,Urumqi 830054,China;Xinjiang Laboratory of Lake Environment and Resources,Xinjiang Normal University,Urumqi 830054,China)
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2020年第12期1626-1631,共6页
Journal of Ecology and Rural Environment
基金
国家自然科学基金(41867067,41561073)。
关键词
葡萄园
土壤
重金属
空间分布
来源
vineyard field
soil
heavy metal
spatial distribution
sources
