不同土地利用类型下土壤铜累积状况及其污染风险控制  

Soil Copper Accumulation under Different Land Use Types and Its Pollution Risk Control

作　　者：管滨[1] 孙虎[1] 

机构地区：[1]陕西师范大学旅游与环境学院,陕西西安710062

出　　处：《山东农业科学》2015年第4期83-87,共5页Shandong Agricultural Sciences

基　　金：教育部科学技术研究重点项目"陕南南水北调水源区景观生态变化与土壤侵蚀关系研究"(105152)

摘　　要：对陕西省宁陕县旬阳坝镇的菜地、阶地耕地、坡耕地、荒地、林地5种不同土地利用类型的437个土壤样点进行调查分析,探讨土壤铜的累积状况,了解不同土地利用类型下土壤铜含量的差异。结果表明,研究区土壤铜的平均值为24.29 mg/kg,显著高于全国土壤铜浓度背景值(22.60 mg/kg),但未超过铜元素的累积临界值(37.45 mg/kg)。与全国铜浓度背景值相比,5种不同土地利用类型土壤铜出现不同程度的累积,铜平均含量由高到低顺序为:菜地>阶地耕地>坡耕地>荒地>林地。To analyze soil copper accumulation under different land use types, the investigation was con-ducted in Xunyangba Town of Ningshan District, Shaanxi Province, and 437 soil samples were collected from five kinds of land use types including vegetable land, terrace farmland, slope farmland, wasteland and forest-land.The results showed that the mean of Cu concentration was 24.29 mg/kg in the research area, which was significantly higher than the national background concentration （22.6 mg/kg）, but not over the critical con-tent of Cu accumulation （37.45 mg/kg） .Compared to the national background concentration, the Cu accu-mulations were different in different land use types.The average Cu concentration was the highest in vegetable land, and was higher than that in terrace farmland, slope farmland,wasteland and forestland in order.

关 键 词：土地利用类型 铜 污染 风险控制 

分 类 号：S158.4[农业科学—土壤学]