生态学杂志2025，Vol.44Issue(8)：2465-2475,11.DOI:10.13292/j.1000-4890.202508.016
酸雨对改良剂修复土壤重金属污染效果的影响
Influence of acid rain on remediation effectiveness of soil heavy metal pollution by amendments
摘要
Abstract
Soil acidification is a critical factor influencing the activity and chemical form distribution of heavy met-als.Acid rain is one of the main causes of soil acidification.To comprehensively summarize the effects of acid rain on the remediation effectiveness(stability and form changes)of amendments for soils contaminated by heavy met-als,a meta-analysis was conducted with 59 published studies.The results showed that adding amendments under the influence of acid rain could significantly reduce the total leaching of heavy metals from soil by an average of 66.40％.The exchangeable and carbonate-bound forms of heavy metals reduced by 43.02％and 11.17％,respec-tively,while the iron-manganese oxide-bound,organic matter-bound,and residual forms was increased by 12.33％,14.20％,and 27.71％,respectively.The composite material-type amendments exhibited superior remedia-tion effects compared with single-component ones.The fixation and stabilization of soil heavy metals through amendments were influenced by both soil environmental conditions and its intrinsic properties.The optimal stabili-zing effect of amendments on soil heavy metals was observed when soil pH is maintained between 5.5 and 6.5,with a CEC value below 15.4 cmol·kg-1,organic matter content ranging from 30 to 40 g·kg-1,clay content exceeding 35％,amendment pH between 6 and 8,and amendment concentration within the range of 20 to 30 g·kg-1.These findings provide valuable insights for more effectively remediating heavy metal-contaminated soils affected by acid rain based on specific local conditions.关键词
改良剂/重金属污染/酸雨/土壤Key words
amendment/heavy metal pollution/acid rain/soil引用本文复制引用
周惠婷,章家恩..酸雨对改良剂修复土壤重金属污染效果的影响[J].生态学杂志,2025,44(8):2465-2475,11.基金项目
国家自然科学基金-广东联合基金项目(U1701236)、岭南现代农业科学与技术广东省实验室自主科研项目双聘团队重大科技研究专项(NT2021010)资助. （U1701236）
