摘要
对洛川不同土地利用方式的土壤重金属污染进行分析研究,结果显示,不同利用方式下的土壤重金属污染及分布特征有明显区别。耕地和苹果林地土壤重金属污染指数均小于1.0,土壤中砷(As)和铬(Cr)含量超出绿色食品土壤环境清洁安全值警戒线。土壤重金属综合污染指数耕地深度在30cm^65cm范围内超出警戒线,林地在深度65cm^115cm范围内超出警戒线。图1,表4,参21。
Heavy metals of agricultural soil and apple orchard soil were investigated in Luochuan tableland. The results show that heavy metals pollution and distribution of agricultural soil are obviously different from those of apple orchard soil. ①Heavy metals pollution indexes of agricultural soil and apple orchard soil are less than 1.0;②As and Cr contents of the two soils are more than the warning line of soil environmental quality of green-food production; ③Heavy metals pollution integrated index of agricultural soil is more than the warning line in the layer of 30cm-65cm;④Heavy metals pollution integrated index of apple orchard soil is more than the warning line in the layer of 65cm-115cm.
出处
《农业系统科学与综合研究》
CSCD
2009年第2期142-146,共5页
System Sciemces and Comprehensive Studies In Agriculture
基金
国家自然科学基金(40471119
40571154)
陕西省自然科学基金(2006D01)
关键词
苹果林地
耕地
重金属
污染评价
洛川
apple tree plantation
cultivated land
heavy metals
pollution assessment
Luochuan tableland
