铜矿排土场土壤环境质量多层次模糊综合评判  

Multi-level Fuzzy Comprehensive Evaluation of Soil Environmental Quality of Copper Mine Waste Dump

作　　者：程睿 CHENG Rui(Shenzhen Ruyin Ecological Construction Co.,Ltd,Shenzhen 518057,Guangdong,China)

机构地区：[1]深圳市如茵生态环境建设有限公司,广东深圳518057

出　　处：《亚热带资源与环境学报》2022年第2期66-71,共6页Journal of Subtropical Resources and Environment

基　　金：江铜集团科技项目(2018012)。

摘　　要：以永平铜矿南部排土场1#、2#坝以上区域为研究对象,选取11项表征土壤化学性质、产酸潜力、微生物群落特征的指标,采用层次分析法,通过两两重要性比较计算各指标权重,运用两级模糊综合评判法对排土场土壤环境质量进行综合评判。结果表明:排土场土壤环境质量等级为Ⅴ级,整体处于“很差”状态,综合措施修复改良后土壤质量达到Ⅰ级,生态修复一年后土壤环境质量等级下降到Ⅱ级,但仍处于“较好”状态,期间植被持续恢复良好。综合评判结果与实际情况相符,说明两级模糊综合评判法科学有效,能够为矿区生态修复提供科学依据。为确保矿区生态修复的可持续性,污染土壤综合措施修复改良后的质量等级应达到Ⅱ级(较好)及以上等级才能进行植被恢复。Soil environmental quality of the waste dump was researched so as to guide the local vegetation construction.The area above No.1 and No.2 dam of the waste dump in the south of Yongping Copper Mine were taken as study area,and 11 indexes representing soil chemical properties,acid production potential and microbial community characteristics were selected to derive the soil environmental quality with the two-level fuzzy comprehensive evaluation approach,and the weight of each index was calculated by AHP.The results show that the soil environmental quality of waste dump is of grade V(very poor).After comprehensive measures were taken to repair and improve the soil quality,it reaches grade I(excellent),and after one year's ecological restoration,the soil environmental quality level drops to grade II(good),during which the vegetation continues to recover well.The results of the comprehensive evaluation are consistent with the actual situation,which shows that the two-level fuzzy comprehensive evaluation approach is scientific and effective,and can provide scientific basis for the ecological restoration of the mining area.In order to ensure the sustainability of ecological restoration in the mining area,the quality level of the comprehensive measures of polluted soil restoration and improvement should reach level II(good)or above before vegetation restoration.

关 键 词：矿山修复 铜矿排土场 土壤环境质量 模糊综合评判 层次分析法 

分 类 号：X53[环境科学与工程—环境工程] X852