文献类型：期刊文献

英文题名：Effects of copper oxide nanoparticles on Salix growth, soil enzyme activity and microbial community composition in a wetland mesocosm

作者：Qu, Haojie[1] Ma, Chuanxin[2] Xing, Wenli[1] Xue, Liang[1] Liu, Hong[4] White, Jason C.[3] Chen, Guangcai[1] Xing, Baoshan[5]

第一作者：Qu, Haojie

机构：[1] Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang, 311400, China; [2] Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China; [3] The Connecticut Agricultural Experiment Station, New Haven, CT, 06504, United States; [4] College of Environment and Resources, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; [5] Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, United States

年份：2022

卷号：424

外文期刊名：Journal of Hazardous Materials

收录：EI(收录号：20214611147848);Scopus(收录号：2-s2.0-85118724806)

语种：英文

外文关键词：Copper oxides - Ecology - Soils - Microorganisms - Nanoparticles - Particle size - Wetlands

摘要：A model wetland with Salix was established to investigate the effects of CuO nanoparticles (NPs; the equivalent amount of Cu at 0, 100 and 500 mg/kg) on plant, soil enzyme activity and microbial community. Ionic Cu (100, 500 mg/kg) and bulk-sized CuO particles (BPs, 500 mg/kg) were included as controls. The results suggested the CuO NPs at 500 mg/kg and ionic Cu treatments inhibited the plant growth, while CuO NPs at 100 mg/kg and CuO BPs at 500 mg/kg played a facilitating role. CuO NPs significantly decreased the activities of peroxidase and polyphenol oxidase, while ionic Cu treatments increased peroxidase activity, BPs and ionic Cu (500 mg/kg) increased the polyphenol oxidase activity. Bacterial community richness and diversity were reduced in all Cu treatments; however, CuO NPs and BPs at 500 mg/kg significantly increased the richness and diversity of fungal community.Soil microbial community was significantly altered by Cu types and dose. In comparison with ionic Cu and CuO BPs, CuO NPs uniquely enriched the microbial community and the fungal families.Overall, it demonstrate that both particle size and dose regulate the impact of CuO on wetland ecology, which deepens our understanding on the ecological risks of CuO NPs in freshwater forested wetland. ? 2021 Elsevier B.V.