环境工程学报2026，Vol.20Issue(6)：1738-1748,11.DOI:10.12030/j.cjee.202505106
白音华露天矿区不同施肥处理对土壤养分有效性的影响及其微生物响应机理
Changes in soil nutrient availability and the underlying mechanism of microbial community responding to different fertilisation treatments in Baiyinhua mining area
摘要
Abstract
Open-pit coal mining often induces severe soil nutrient depletion,significantly hindering vegetation recovery.In this study,a field experiment was conducted to investigate the effects of different fertilization strategies on soil nutrient dynamics and availability,as well as the mediating role of microbial communities.The treatments included(1)high-,medium-and low-phosphorus(P)doses of inorganic fertilizers,(2)green manure(plant residue),and(3)a microbial fertilizer containing nitrogen-fixing,plant-growth-promoting bacteria and rhizobia.The results demonstrated that,compared to the control,the application of microbial fertilizer significantly increased soil total carbon(C)and total nitrogen(N)contents,rising from 8.47 g·kg−1 to 10.17 g·kg−1 and from 0.37 g·kg−1 to 0.56 g·kg−1,respectively.High-P inorganic fertilizer significantly increased available P content(26.28 mg·kg−1 vs.9.78 mg·kg−1 in the control).Both microbial fertilizer and high-P inorganic fertilizer significantly altered soil fungal community composition,particularly enhancing the relative abundances of Gibberella and Alternaria.These results indicate that both fertilization strategies can improve N and P availability in reclaimed soils by restructuring fungal community composition and thereby modifying soil nutrient status.Overall,the application of microbial fertilizer containing nitrogen-fixing plant-growth-promoting bacteria and rhizobia represents a promising reclamation strategy that supports green mining practices and contributes to ecological restoration efforts in mining areas.关键词
露天煤矿开采/土壤改良/养分添加/微生物菌肥/氮磷有效性/生态恢复Key words
open-pit coal mining/soil improvement/nutrient addition/microbial fertilizer/nitrogen and phosphorus availability/ecological restoration分类
资源环境引用本文复制引用
孙国皓,李敬国,曲来叶,苟铁男,贾宏君,杨子于,张乃莉..白音华露天矿区不同施肥处理对土壤养分有效性的影响及其微生物响应机理[J].环境工程学报,2026,20(6):1738-1748,11.基金项目
国电投内蒙古公司项目(360018JX0120230003) （360018JX0120230003）
