摘要
开展4种铁矿排土场基质改良方法的现场修复实验;进行修复后的土壤理化性质、肥力性质、重金属污染特征,以及植被生长指标检测;确定了排土场生态修复效果的评价因子;利用灰色理论关联度分析法确定权重;根据各评价因子的指数进行统计学加权计算,最终得出生态修复效果评价指数。结果表明:40%粒径-5 mm排土场原矿土+60%黄土+刺槐的组合对排土场生态修复具有较好的效果,优于其它修复组合。建立的生态修复效果评价方法,较全面考虑了多种土壤和植被指标因素,对现场生态修复工程具有良好的借鉴和参考价值。
On-site repair experiment of four kinds of iron mine dump matrix improvement methods were carried out.Soil physical and chemical properties,fertility properties,heavy metal pollution characteristics and vegetation growth indicators were tested after remediation.Evaluation factor of ecological restoration effect of dump was determined.Weights were determined by grey theory correlation analysis.According to statistical weighting of each factor index,ecological restoration index was obtained.The results show that the combination of 40%of-5 mm dump field original ore+60%loess+hedgehog has a good effect on ecological restoration of the dump,which is better than other repair combinations.The ecological restoration effect evaluation method established in this paper has comprehensively considered a variety of soil and vegetation index factors,and has good reference value for on-site ecological restoration project.
作者
侯永莉
曹明杰
郝喆
HOU Yongli;CAO Mingjie;HAO Zhe(Nonferrous Geological Exploration and Research Institute,Shenyang 110013,China;College of Environmental Sciences,Liaoning University,Shenyang 110036,China)
出处
《有色金属工程》
CAS
北大核心
2020年第6期114-119,共6页
Nonferrous Metals Engineering
基金
国家水体污染控制与治理科技重大专项(2015ZX07202-012)
辽宁省自然科学基金项目(20180550192)
辽宁省百千万人才项目(辽百千万立项[2015]33号)。
关键词
排土场
基质改良
生态修复
效果评价
dump
matrix improvement
ecological remediation
effect evaluation
