宁夏银川市市区表层土壤重金属元素数据集

Dataset of Heavy Metals in Surface Soil of Yinchuan City, Ningxia Hui Autonomous Region, China

土壤中重金属的含量关系到生态系统健康,城市土壤中重金属将直接和间接的危害居民人体健康。本研究以银川市区为采样区,3km×3km的格网布设采样点采样,利用X-荧光光谱仪测定土壤样品中Co、Cr、Cs、Mg、Pb、和Ti的含量,制作土壤重金属元素数据表。宁夏银川市市区表层土壤重金属元素数据集由银川市市区表层土壤重金属元素数据组成,大体上显示了银川市市区表层土壤中Co、Cr、Cs、Mg、Pb、Ti的含量及其分布情况。本研究对各重金属含量进行描述性统计分析,确定各重金属含量的极值及算术平均值,并与省区及全国背景值对比分析。使用污染负荷指数对土壤重金属进行评价,确定各重金属元素的污染程度。使用主成分分析方法计算土壤重金属元素的主成分载荷矩阵,并推断其主要来源。利用ArcGIS10.2中地统计学方法对土壤重金属点数据插值,展布到银川市区范围获得土壤重金属空间分布图。数据集中土壤重金属含量及其分析有助于了解城市区域重金属状况,为土壤综合治理、人体健康保障和疾病预防提供参考。该数据集包括:(1)样点的地理位置数据;(2)表层土壤重金属含量数据。数据集存储为.kmz、.shp和.xls格式,数据量为73.8 KB。

The content of heavy metals in soil is related to ecosystem health and heavy metals in city soils may harm residents’health.The dataset presented here comprises a statistical table of heavy metal elements in surface soils of Yinchuan city and a spatial interpolation map.These data described the contents of Cs,Mg,Pb,Co,Cr,and Ti in surface soils of Yinchuan city as well as the distribution of each element.The correlations between heavy metals were also analyzed in this study,and their abundances were evaluated using the Pollution Load Index(PLI)and Principal Component Analysis(PCA)in order to deduce dominant sources.The concentration of heavy metals in soils of this dataset can help to better understand the status of these pollutants in urban areas and provides a valuable reference for comprehensive soil treatment,the protection of human health,and disease prevention.