文献类型：期刊文献

英文题名：Phytoremediation potential evaluation of multiple Salix clones for heavy metals (Cd, Zn and Pb) in flooded soils

作者：Cao, Yini[1,2] Tan, Qian[1,3] Zhang, Fan[4] Ma, Chuanxin[1] Xiao, Jiang[2] Chen, Guangcai[2]

第一作者：Cao, Yini

机构：[1] Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou, 510006, China; [2] Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang, 311400, China; [3] Southern Marine Science and Engineering Guangdong Laboratory [Guangzhou], Guangzhou, 511458, China; [4] State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China

年份：2022

卷号：813

外文期刊名：Science of the Total Environment

收录：EI(收录号：20220111423908);Scopus(收录号：2-s2.0-85122087316)

语种：英文

外文关键词：Soil pollution - Soil conservation - Contamination - Bioremediation - Soil pollution control - Soils - Hierarchical systems - Analytic hierarchy process - Cloning - Floods

摘要：Climate-induced flooding makes soil more vulnerable to heavy metal contamination, posing challenges for soil remediation. Salix has the potential to cope with flooding stress and environmental contamination, but its effectiveness in flooded soils with multiple heavy metals has not yet been well assessed. Thus, the present work tested fifteen Salix clones grown in multimetal (Cd, Zn and Pb) contaminated soils under non-flooded versus flooded conditions. The results indicated that all tested Salix clones withstood long-term (90 d) flooding. Compared to the non-flooded condition, the flooded condition reduced the Cd (11.7–90.1%) contents in all organs but dramatically increased the Zn and Pb contents in the roots. The bioconcentration factor values of heavy metals in the aboveground organs were in the order of Cd > Zn > Pb. The tested Salix clones were characterized by high phytoextraction capacity for Cd and Zn under non-flooded condition and phytostabilization trait for Pb under flooded condition. To assess the overall performance of phytoremediation potentials, we attempted to use an analytic hierarchy process-entropy weight (AHP-EW) model, which considered the growth performance, photosynthetic parameters, accumulation, and mobility of toxic metals. Three Salix clones (J1010, P54 and P667) exhibited significant potential for multimetal remediation capacities. The current study provided valuable insights into the phytomanagement of woody plants, and the AHP-EW model is helpful for screening suitable trees for the phytoremediation of heavily multimetal contaminated wetlands. ? 2021