摘要
将四种草本植物种植在不同沙土介质中,研究对人工雨水中重金属铜的去除效率及富集效果,为植物滞留系统筛选草本植物提供科学依据.结果表明,不同草本植物对人工雨水中铜的去除能力,从强到弱的顺序依次为:早熟禾>地毯草>黑麦草>高羊茅.四种草本植物对铜的去除率随着入口浓度的增加而增加.四种草本植物地上部分与根部铜含量比值均小于1.四种草本植物中地毯草对铜累积总量最高.综合考虑应交替种植地毯草和早熟禾.
To screen suitable herbs for bioretention system,four herbs were planted in different soils and their bioaccumulation and removal capability of copper in artificial rain were compared.The results showed that,the copper removal capability had a gradual weaker trend in Poa annua,Axonopus compressue,Lolium perenne and Festuca elat,respectively.The copper removal efficiency of four herbs were all increased when the inflow copper concentration increased.The ratio of the copper content in aboveground part and underground were all below 1in four herbs.However,the Axonopus compressus had the highest copper accumulation capability.Therefore,to achieve a high copper removal efficiency,Axonopus compressus and Poa annua should be planted together in a bioretention system.
出处
《内蒙古大学学报（自然科学版）》
CAS
北大核心
2015年第2期204-210,共7页
Journal of Inner Mongolia University：Natural Science Edition
基金
内蒙古自治区自然科学基金博士基金项目(2014BS0505)
国家自然科学基金项目(51379013
51268040)
国家重点基础研究发展规划项目(2010CB951104)
高校博士点基金博导类项目(20100003110024)
长江学者和创新团队项目(IRT0809)
2013年内蒙古重大科技专项项目"北方地区规模化畜禽养殖污染防治关键技术集成及示范"
关键词
植物滞留系统
草本植物
铜
去除率
富集
bioretention
herbaceous
copper
removal efficiency
bioaccumulation
