LIU Jun,YANG Guang,DING Xia,et al.Effects of Tailings Reservoir on Surrounding Soil Physical and Chemical Properties in Forest Area Iron Mine[J].Northern Horticulture,2022,(10):76-81.[doi:10.11937/bfyy.20214649]
林区铁矿尾矿库对周边土壤理化性质的影响
- Title:
- Effects of Tailings Reservoir on Surrounding Soil Physical and Chemical Properties in Forest Area Iron Mine
- 文献标志码:
- A
- 摘要:
- 以鄂温克族自治旗与牙克石市交界处原始林区的塔尔气铁矿为研究对象，测定了尾矿库周边土壤机械组成、pH、电导率以及土壤养分（碱解氮、速效磷、速效钾、有机质）含量，并对各指标进行相关性分析，研究了林区铁矿尾矿库对周边土壤理化性质的影响，以期为该地区矿区土地复垦与生态保护提供参考依据。结果表明：尾矿库对周边0~20 cm土层土壤理化性质影响较大；按CK、B、C、W、S样区排序发现，土壤粗颗粒物质趋于减少，细颗粒物质趋于增多，土壤pH呈逐渐升高趋势，电导率、土壤养分含量快速下降且各样区存在显著差异（P<0.05）；相关性分析表明，土壤养分之间呈极显著差异（P<0.01），砂砾、细粉粒、pH以及电导率等指标的变化，使土壤养分发生显著变化，是影响土壤肥力的重要因素。
- Abstract:
- Taking Taerqi iron mine′s tailings reservoir in the original forest area at the junction of Ewenki Autonomous banner and Yakeshi city as the research object,soil mechanical composition,pH,conductivity and soil nutrients (alkaline-hydrolysis N,available P,available K,organic matter) around the tailings reservoir were measured,and the correlation between each indexes were analyzed,the effects of tailings reservoir on physical and chemical properties of surrounding soil in forest area iron mine was studied,in order to provide reference for land reclamation and ecological protection in this area.The results showed that tailings reservoir had a great influence on physical and chemical properties in 0-20 cm soil layers around the tailings reservoir.Sample areas sorted from CK,B,C,W to S,the soil coarse particle matter were decreased,the fine particle matter were increased,the soil pH was increased gradually,the conductivity and soil nutrient content were decreased rapidly,and there were significant differences in sample plots (P<0.05).Correlation analysis indicated that soil nutrients had significantly correlated to each other,the changes in soil nutrients due to the changes in sand gravel,fine silt,pH and conductivity,they were important factors to affect soil fertility.
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备注/Memo
第一作者简介：刘军（1984-），男，硕士，高级实验师，现主要从事土地利用整治与保护等研究工作。E-mail:314026272@qq.com.责任作者：杨光（1974-），男，博士，教授，博士生导师，现主要从事荒漠化遥感监测等研究工作。E-mail:yg331@126.com.基金项目：内蒙古自治区科技计划资助项目（2021GG0070）。收稿日期：2021-11-16