期刊论文

Ecological remediation effect of organic bacterium manure-fast growing tree species on a manganese tailing site

中文

中国环境科学

1000-6923

2019

39

12

5219-5227

10.19674/j.cnki.issn1000-6923.2019.0606

2018JJ4010:湖南省自然科学基金 200909066:环保公益性行业科研专项

本校为第一机构

在锰尾矿区建立了4.5hm~2生态修复工程区,以速生树种泡桐(Paulownia tomentosa)和栾树(Koelreuteriapaniclata)作为建群植物,采用有机菌肥改良其根际环境,利用土壤库存耐性植物种子的自然萌发力来丰富物种多样性.结果表明,工程实施后第6a,有机菌肥处理植物群落干物质生物总量达到33498.7kg/hm~2,Mn吸收积累量达到5532.6g/hm~2,植物种类数达到51种,分别为无机化肥对照的22.8、2.6和3.4倍;有机菌肥处理的植物群落Pb、Cd、 Cu、Zn和Cr的总积累量、根际微生物种类及其数量也显著大于对照.有机菌肥的改良机制可归结于其与植物根系、根际微生物对基质的共同作用.有机菌肥处理区泡桐和栾树的总株数不到...

An ecological restoration engineering project of 4.5hm~2 was implemented at a Mn mine tailing site by coplanting two fast-growing trees (Paulownia fortune and Koelreuteriabipinnata) as the dominant colonization species. An organicbacteri-rich manure was used to amend the rhizospheric area surrounding the coplanted seedlings. Enrichment of the site's biodiversity was counted on natural germination of native metal tolerant plant species based on the soil seed inventory capacity. The experimental data showed that the application of the manure not only enhanced the biomass growth and heavy metal u...