文献类型：期刊文献

英文题名：Evaluation of dendroremediation potential of ten Quercus spp. for heavy metals contaminated soil: A three-year field trial

作者：Li, Xiaogang[1,2] Xiao, Jiang[1] Salam, Mir Md Abdus[3,4] Chen, Guangcai[1,5]

第一作者：Li, Xiaogang

通信作者：Chen, GC[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Zhejiang, Peoples R China;[2]Nanjing Forestry Univ, Nanjing 210037, Jiangsu, Peoples R China;[3]Univ Eastern Finland, Sch Forest Sci, Yliopistokatu 7,POB 111, Joensuu 80100, Finland;[4]Nat Resources Inst Finland LUKE, Yliopistokatu 6B, Joensuu 80100, Finland;[5]73 Daqiao Rd, Hangzhou 311400, Zhejiang, Peoples R China

年份：2022

卷号：851

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000874763100010)】；

基金：Acknowledgements This work was supported by the Fundament Research Funds of the Chinese Academy of Forestry (CAFYBB2019SZ001) and the Key Research and Development Program of Zhejiang Province, China (2018C03047) .

语种：英文

外文关键词：Oak; Cd; Zn; Phytoremediation; Comprehensive bioaccumulation index

摘要：Woody plants have gained considerable attention for remediating soils contaminated with heavy metals because of their cost-efficient and ecologically friendly nature. However, most studies on potential phytoremediation evaluation are limited to short-term experiments in greenhouse or field, meaning that differences may exist between laboratory results and application in natural environment. In this study, ten Quercus spp. were tested in a consecutive 3-year field trial (2018-2020) to assess their dendroremediation abilities for Cd and Zn contaminated soil. The results re-vealed that nine Quercus spp. demonstrated good survival ability without any stress, except for Quercus velutina Lam., in the 3-year growth period. In 2020, Quercus texana Buckley and Quercus fabri Hance plants produced the greatest biomass (2100 and 1880 g plant-1) among the nine Quercus spp. Quercus texana had the highest total Cd ac-cumulation (39.3 mg plant-1) in 2020, which was 8.5 times higher than that in 2018, followed by Quercus pagoda Raf. (8.85 mg plant-1) and Q. fabri (8.07 mg plant-1) plants, respectively, whereas Cd accumulation increased by 7.4 times for Q. pagoda and 22 times for Q. fabri compared to 2018. The results from 2020 indicated that Q. fabri had the highest Zn accumulation (205 mg plant-1), followed by Quercus nigra L. (149 mg plant-1) and Q. texana (140 mg plant-1), respectively, and these values increased 14, 6.4, and 6.2 times in comparison to 2018. The comprehensive bioaccumu-lation index (CBAI) was proposed to evaluate the dendroremediation potential of Quercus spp., suggesting that Q. texana and Q. fabri had the most outstanding potential for remediation of Cd and Zn polluted soil, with the values of 0.82 and 0.60, respectively. In summary, Q. texana and Q. fabri are ideal for remediating Cd/Zn-contaminated soil, and long-term field trials and the CBAI method are helpful for comprehensively evaluating the remediation capacity of trees.