摘要
选择陕西省吴起县和礼泉县退耕还林还草样地土壤为研究对象,并以农用地土壤作为对照,利用离子色谱法测定土壤水溶性F-、Cl-、SO42-、NO3-、NO2-和PO43-等六种阴离子浓度,研究了农地退耕后土壤水溶性阴离子的变化特征.研究结果表明:六种阴离子中,SO42-和NO3-浓度较高,而Cl-、NO2-、F-和PO43-离子浓度相对较低.除F-、NO2-和PO43-外,农地退耕后,两个样区表层土壤水溶性阴离子含量明显提高.多元统计分析表明,环境因子可解释有关土壤阴离子含量47%的变异,且F-主要受海拔和纬度的影响,而Cl-、NO3-、NO2-和PO43-受植被类型的影响显著.
Soil samples from Wuqi County and Liquan County of Shaanxi Province were selected as the research objects,and soil from agricultural land was taken as the control.Six kinds of anions,such as water-soluble fluoride,chlorine,sulfate,nitrate,nitrite and phosphate,were determined by ion chromatography.The changes of water-soluble anions in soil after farmland conversion were studied.The results showed that the concentrations of sulfate and nitrate ions were higher among the six anions,while the concentrations of chloride,nitrite,fluoride and phosphate ions were relatively lower.Except for F-,NO2-and PO43-,the content of water-soluble anions in surface soil increased significantly after farmland conversion.Multivariate statistical analysis showed that environmental factors could explain 47%variation of soil anion content,and fluoride ions were mainly affected by altitude and latitude,while chloride ions,nitrite ions,phosphate and nitrate ions were significantly affected by vegetation types.
作者
董莉丽
DONG Lili(College of Resources&Environment and History&Culture,Xianyang Normal University,Xianyang 712000,Shaanxi China)
出处
《河南科学》
2020年第5期721-727,共7页
Henan Science
基金
陕西省教育厅重点科研计划项目(16JZ089)
咸阳师范学院校级项目(XSYK19027)。
关键词
土壤水溶性阴离子
多元统计分析
植被恢复
soil water-soluble anions
multivariate statistical analysis
vegetation restoration
作者简介
董莉丽(1979-),女,副教授,博士,主要研究方向为生态修复与环境效益评价。
