文献类型：期刊文献

英文题名：Facilitated remediation of heavy metals contaminated land using Quercus spp. with different strategies: Variations in amendments and experiment periods

作者：Li, Xiaogang[1] Xiao, Jiang[1] Gai, Xu[1] Du, Zhongyu[1] Salam, Mir Md Abdus[2] Chen, Guangcai[1,3]

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]Univ Eastern Finland, Sch Forest Sci, Yliopistokatu 7 111, Joensuu 80100, Finland;[3]73 Daqiao Rd, Hangzhou 311400, Zhejiang, Peoples R China

年份：2023

卷号：876

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20231413854016);Scopus(收录号：2-s2.0-85151550048);WOS:【SCI-EXPANDED(收录号:WOS:000975036800001)】；

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：Dendroremediation; Soil amendments; Cd; Zn; Long -term

摘要：Phytoremediation using trees combined with soil amendments has gained much attention for its highly cost-effective trait. In natural field conditions, however, the results may not reflect the true performance of amendments based on short-term laboratory studies. In this three-year field trial, various soil amendments such as rice straw biochar, palygorskite, a combined biochar of rice straw biochar and palygorskite, and hydroxyapatite were used to systematically study the potential of the low-accumulator (Quercus fabri Hance) and high-accumulator (Quercus texana Buckley) for cadmium (Cd) and zinc (Zn) to remediate severely contaminated soils. Soil amendments enhanced the dendroremediation capacity of Quercus as the growth period prolonged. In 2021, the rice straw biochar treatment increased Cd and Zn accumulation by 1.76 and 2.09 times in Q. fabri, respectively, compared to the control. Cd and Zn accumulation increased to 1.78 and 2.10 times, respectively, under combined biochar treatment for Q. texana compared to the control. Metals accumulation was mainly enhanced by soil amendments through increasing the growth biomass of Q. fabri and improving the biomass and bioconcentration ability of Q. texana. Overall, soil amendments effectively improved the phytoremediation efficiency of Quercus in the long term, and selecting suitable amendments should be fully considered in phytoremediation.