江西农业学报2025，Vol.37Issue(5)：77-83,7.DOI:10.19386/j.cnki.jxnyxb.2025.05.011
陕北风沙区煤矸石山植被修复对土壤重金属迁移规律的影响
Effect of Vegetation Restoration of Coal Gangue Mountain on Soil Heavy Metal Migration in Wind-blown Sand Area of Northern Shaanxi Province
摘要
Abstract
To reveal the influence of different vegetation restoration modes of coal gangue mountain on the soil heavy metal migration rule in wind-blown sand area,the coal gangue mountain in wind-blown sand area of northern Shaanxi Province was used as the research object,and the soil mechanical composition,pH,electrical conductivity,organic matter and cation exchange capacity at 0～20 cm and 20～40 cm depth were measured under different planting and restoration modes of Medicago sativa,Caragana korshinskii,Juniperus sabina,Amorpha fruticosa,as well as copper(Cu),zinc(Zn),lead(Pb),cadmium(Cd),chromium(Cr)5 kinds of heavy metal elements content and existence form.The results showed that among the 4 restoration modes,Med-icago sativa restoration mode had finer soil texture and the best effect,and the deep soil matrix was more stable.The average content of Cu,Zn and Pb in deep soil is higher than that in surface soil,and the residual state of heavy metals in surface soil is higher than that in deep soil,indicating that the closer the distance from coal gangue,the higher the content of heavy metals in soil.Soil heavy metals Cu,Zn and Cr are mainly in residual state,and Cu is positively correlated with Zn and Cr,indicating that they may have the same source.The effects of soil physicochemical properties on heavy metal content were ranked in the order of CEC＞SOM＞pH＞TDS.关键词
煤矸石/生态修复/重金属/土壤污染/迁移规律Key words
Coal gangue/Ecological restoration/Heavy metal/Soil pollution/Migration rule分类
资源环境引用本文复制引用
朱颖,李群,辛云玲,弥芸,张晨晨,董强,马延东,赵国平..陕北风沙区煤矸石山植被修复对土壤重金属迁移规律的影响[J].江西农业学报,2025,37(5):77-83,7.基金项目
陕西省科协青年人才托举计划项目"榆林沙区煤矸石山重构土壤重金属含量及迁移规律研究"(NYHB202230) （NYHB202230）
国家自然科学基金"陕北矿区采煤塌陷对风蚀的影响研究"(41661062). （41661062）
