Enhanced Cd transport in the soil-plant-atmosphere continuum (SPAC) system by tobacco (Nicotiana tabacum L.)

doi:10.1016/j.chemosphere.2019.03.021

	Enhanced Cd transport in the soil-plant-atmosphere continuum (SPAC) system by tobacco (Nicotiana tabacum L.)
	Lu, Jingzhao 1,2; Lu, Hongwei 1,2
刊名	CHEMOSPHERE
	2019-06-01
卷号	225 页码:395-405
关键词	Cd transport Soil-plant-atmosphere system Tobaccos Cd effluent
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2019.03.021
通讯作者	Lu, Hongwei(luhw@igsnrr.ac.cn)
英文摘要	The optimal treatment designs of the heavy metal pollution sites and the calculation of the recovery capacity are important in recent studies. In this paper, we aimed to model the accumulation of heavy metals under different artificially Cd (added) concentrations, and analyzed the various tobacco solute adsorption and fluid flow properties. The finite difference method was used to simulate the heavy metals flux and root absorption in the soil, and the model simulation was compared with the measured values to quantify the uncertainty of the metal transport and modeling parameters. Treatments with different Cd levels were compared, e.g., control tillage (CT), low Cd tillage (LT, 2.0 mg/kg), high Cd tillage (HT, 20.0 mg/kg), ultra-high Cd tillage (UHT, 80.0 mg/kg). The predicted soil water content (SWC) was consistent with observed data. Predicted cumulative root water uptake (mm) ranked as follows: CT (196)>LT (178)>HT (134)>UHT (117). Potential transpiration rates (T (r p)) under HT and UHT were lower than that of other treatment, because of their lower leaf Area Index (LAI). The predicted root Cd uptake showed a strong correlation within the actual Cd uptake. The predicted root absorption of Cd (max) was UHT (180.17)> HT (106.52)> LT (53.20) >CT (0.610). However, deviation of models was added by the Cd effluent trend and the performance of root exudates. This finding would be useful for further investigation into bioremediation in the agricultural area, not only for Cd ion but for a range of other heavy metal contaminants. (C) 2019 Published by Elsevier Ltd.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDA20040301] ; National Natural Science Foundation of China[41890824] ; Fundamental Research Funds for the Central Universities
WOS关键词	VULNERABILITY ASSESSMENT ; HEAVY-METALS ; WATER-FLOW ; HEALTH ; CADMIUM ; BIOREMEDIATION ; TRANSLOCATION ; ACCUMULATION ; OPTIMIZATION ; CONSERVATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000467668500044
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/59288]
专题	中国科学院地理科学与资源研究所
通讯作者	Lu, Hongwei
作者单位	1.North China Elect Power Univ, Sch Renewable Energy, Beijing 102206, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Lu, Jingzhao,Lu, Hongwei. Enhanced Cd transport in the soil-plant-atmosphere continuum (SPAC) system by tobacco (Nicotiana tabacum L.)[J]. CHEMOSPHERE,2019,225:395-405.
APA	Lu, Jingzhao,&Lu, Hongwei.(2019).Enhanced Cd transport in the soil-plant-atmosphere continuum (SPAC) system by tobacco (Nicotiana tabacum L.).CHEMOSPHERE,225,395-405.
MLA	Lu, Jingzhao,et al."Enhanced Cd transport in the soil-plant-atmosphere continuum (SPAC) system by tobacco (Nicotiana tabacum L.)".CHEMOSPHERE 225(2019):395-405.