气候变化领域集成服务门户(CCPortal): Redistribution of calcium and sodium in calcareous soil profile and their effects on copper and lead uptake: A poplar-based phytomanagement

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DOI	10.1016/j.scitotenv.2020.142535
	Redistribution of calcium and sodium in calcareous soil profile and their effects on copper and lead uptake: A poplar-based phytomanagement
	Hu, Yahu; Huang, Yu; Xu, Zhihao; Ma, Ying; Chen, Haibin; Cui, Dan; Su, Jieqiong; Nan, Zhongren
通讯作者	Hu, YH ; Nan, ZR (通讯作者)，Lanzhou Univ, Coll Earth & Environm Sci, 222 South Tianshui Rd, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0048-9697
EISSN	1879-1026
卷号	755
英文摘要	Poplar serves as a phytostabilizator in phytomanagement of the trace metals (TMs) copper (Cu) and lead (Pb) contaminated land. In the process of long-term phytomanagement, it is not clear how the cycling of the mineral nutrients calcium (Ca) and sodium (Na) in calcareous soil will affect poplar remediation mechanisms. We selected a site contaminated by Cu and Pb and phytomanaged by Populus simonii Carr. stands of different ages (7, 14, and 28 years) to study the influencing mechanisms. The results showed that after afforestation, the Ca in the subsoil returned to the topsoil through fallen leaves, whereas the Na in the topsoil migrated downward to the subsoil by leaching, resulting in the redistribution of mineral nutrients in the soil profile. In addition, the Ca content in soil solution of the root-zone was significantly lower relative to that of the bulk soil, whereas the Na content in soil solutionwas significantly higher in all stands. As a result, because of the competitive adsorption of mineral nutrient and TM cations on the soil surface, the pool of bioavailable TMin root-zone soils did not significantly decrease with stand age. On the contrary, the TM content in poplar leaves (Cu: 31-37 mg kg(-1); Pb: 62-84 mg kg(-1)) and litter (Cu: 230-790 mg kg(-1); Pb: 394-1366 mg kg(-1)) increased significantly with stand age. Nevertheless, the TM content in poplarwood (Cu < 3 mg kg(-1); Pb < 12 mg kg-1) remained at an extremely low level in all stands. Our results highlighted that strengthening leaf collection is necessary to eliminate ecological risks and ensure the safe production of poplar wood in the long-term phytomanagement of TMcontaminated land. (C) 2020 Elsevier B.V. All rights reserved.
关键词	HEAVY-METAL ACCUMULATION WOODY-PLANTS PHYTOREMEDIATION TOLERANCE CADMIUM IMPACT WILLOW BIOAVAILABILITY TOXICITY POPULUS
英文关键词	Phytoremediation; Tree; Mineral nutrient; Trace metals; Safe production
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000600537400084
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254718
作者单位	[Hu, Yahu; Huang, Yu; Xu, Zhihao; Ma, Ying; Chen, Haibin; Cui, Dan; Nan, Zhongren] Lanzhou Univ, Coll Earth & Environm Syst, MOE Key Lab Western Chinas Environm Syst, Lanzhou 730010, Peoples R China; [Hu, Yahu; Huang, Yu; Xu, Zhihao; Ma, Ying; Chen, Haibin; Cui, Dan; Nan, Zhongren] Lanzhou Univ, Coll Earth & Environm Syst, Gansu Key Lab Environm Pollut Predict & Control, Lanzhou 730010, Peoples R China; [Su, Jieqiong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Hu, Yahu,Huang, Yu,Xu, Zhihao,et al. Redistribution of calcium and sodium in calcareous soil profile and their effects on copper and lead uptake: A poplar-based phytomanagement[J]. 中国科学院西北生态环境资源研究院,2021,755.
APA	Hu, Yahu.,Huang, Yu.,Xu, Zhihao.,Ma, Ying.,Chen, Haibin.,...&Nan, Zhongren.(2021).Redistribution of calcium and sodium in calcareous soil profile and their effects on copper and lead uptake: A poplar-based phytomanagement.SCIENCE OF THE TOTAL ENVIRONMENT,755.
MLA	Hu, Yahu,et al."Redistribution of calcium and sodium in calcareous soil profile and their effects on copper and lead uptake: A poplar-based phytomanagement".SCIENCE OF THE TOTAL ENVIRONMENT 755(2021).