文献类型：期刊文献

中文题名：Bamboo biochar greater enhanced Cd/Zn accumulation in Salix psammophila under non-flooded soil compared with flooded

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

第一作者：Xiaogang Li

机构：[1]Research Institute of Subtropical Forestry,Chinese Academy of Forestry,73,Daqiao Rd,Hangzhou 311400,Zhejiang,China;[2]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;[3]School of Forest Sciences,University of Eastern Finland,Yliopistokatu 7,P.O.Box 111,80100 Joensuu,Finland;[4]Natural Resources Institute Finland(LUKE),Yliopistokatu 6B,80100 Joensuu,Finland

年份：2022

卷号：4

期号：1

起止页码：1072-1088

中文期刊名：生物炭(英文)

外文期刊名：Biochar

收录：Scopus

基金：the National Natural Science Foundation of China(Grant No.32071736);the Fundament Research Funds of Chinese Academy of Forestry(CAFYBB2019SZ001).

语种：英文

中文关键词：Heavy metals;Amendment;Salix;Phytoremediation;Soil flooding

分类号：S15

摘要：As a metal immobilizer,biochar can be used to remediate contaminated soil.Biochar’s effect on the phytoremediation process in flooded conditions under a scenario of increasing flooding frequency as global climate change is not well understood.This study investigated bamboo biochar(BBC)effects on growth and metal accumulation of Salix in multi-metal contaminated soil under non-flooded versus flooded conditions.Salix cuttings were cultivated in pots with severely contaminated soil by Cd and Zn,for 120 days,with four treatments including non-flooded treatment,flooded treatment,non-flooded with 3%BBC application(BBC/soil,w/w),and flooded with 3%BBC addition.BBC,flooding,and BBC×flooding significantly decreased the bioavailability of metals in soils(P<0.05).The BBC addition markedly stimulated Cd concentration in leaves under non-flooded(94.20%)and flooded conditions(32.73%)but showed little effect on roots.The BBC significantly boosted Cd and Zn transport from roots to aboveground parts by 68.85%and 102.27%compared with no BBC amendment under non-flooded treatment,while showing insignificant changes under flooded treatment.Although the plant biomass was little affected,BBC significantly increased Cd and Zn accumulation in the whole plant by 52.53%and 28.52%under non-flooded while showing an insignificant impact under flooded conditions.Taken together,BBC enhanced the phytoremediation efficiency of Salix to Cd and Zn in severely polluted non-flooded soil,while flooding offset this effect.The results indicated the effects of BBC varied under different soil moisture,which should be considered in the biochar-assisted phytoremediation to variable and complex environments.