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新疆典型城-郊-乡梯度带土壤微量元素空间分布与来源
Spatial Distribution and Sources of Trace Elements in Soil Along a Typical Urban-Suburban-Rural Gradient Zone in Xinjiang
投稿时间:2022-03-07  修订日期:2022-10-26
DOI:10.19316/j.issn.1002-6002.2023.04.15
中文关键词:  土壤  微量元素  城市化梯度带  来源  分布
英文关键词:soil  trace elements  urbanization gradient zone  sources  distribution
基金项目:国家自然科学基金项目(U2003301,41867067)
作者单位
娜珠盼·斯德克江 新疆师范大学地理科学与旅游学院, 新疆 乌鲁木齐 830054 
麦麦提吐尔逊·艾则孜* 新疆师范大学地理科学与旅游学院, 新疆 乌鲁木齐 830054
新疆干旱区湖泊环境与资源实验室, 新疆 乌鲁木齐 830054 
杨秀云 新疆师范大学地理科学与旅游学院, 新疆 乌鲁木齐 830054 
李新国 新疆师范大学地理科学与旅游学院, 新疆 乌鲁木齐 830054
新疆干旱区湖泊环境与资源实验室, 新疆 乌鲁木齐 830054 
通讯作者:麦麦提吐尔逊·艾则孜*  新疆师范大学地理科学与旅游学院, 新疆 乌鲁木齐 830054;新疆干旱区湖泊环境与资源实验室, 新疆 乌鲁木齐 830054  
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中文摘要:
      从新疆某地典型城-郊-乡梯度带采集了77个表层(0~20 cm)土壤样品,基于GIS技术与多元统计分析方法,研究各梯度带表层土壤中Hg、As、V、Co、Ni、Cu、Zn、Cd、Pb和Sb等10种微量元素的空间分布特征与主要来源。结果表明:Hg元素在城区、郊区和乡村表层土壤中的平均含量均超出研究区土壤背景值,As元素在城区和郊区表层土壤中的平均含量超出背景值,Zn和Pb元素在城区表层土壤中的平均含量超出背景值,其余元素在3个梯度带表层土壤中的平均含量均低于相应的背景值。研究区表层土壤中,V、Co、Ni、Zn、Cd、Pb和Sb等7种元素的空间分布格局基本相似,均呈现沿城市化梯度带分布的地带性格局;As、Cu和Hg等3种元素的空间分布呈现岛状格局。来源分析结果表明,各梯度带表层土壤中的微量元素的来源各不相同。
英文摘要:
      A total of 77 topsoil (0-20 cm) samples were collected from a typical urban-suburban-rural gradient zone in a region of Xinjiang.Based on GIS technology and multivariate statistical analysis,the spatial distribution patterns and main sources of 10 trace elements including Hg,As,V,Co,Ni,Cu,Zn,Cd,Pb and Sb in the topsoil of each gradient zone were identified.The results showed that the average concentrations of Hg in urban,suburban,and rural soils surpassed the background value of soil in study area,while the average concentrations of As in soils in urban and suburban zones surpassed the corresponding background,the average concentrations of Zn and Pb in the soils in urban zone surpassed the corresponding background values,and the average concentrations of other elements were lower than the corresponding background value.The spatial distribution patterns of V,Co,Ni,Zn,Cd,Pb,and Sb in the topsoil in the study area were basically similar,showing a zonal distribution along the urbanization gradient zone,whereas the spatial distribution of As,Cu,and Hg presented an island-like distribution pattern.The results of the source analysis showed that the sources of trace elements in the surface soils were different in each gradient zone.
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