Mitigating heavy metal accumulation into rice (Oryza sativa L.) using biochar amendment - a field experiment in Hunan, China

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Mitigating heavy metal accumulation into rice (Oryza sativa L.) using biochar amendment - a field experiment in Hunan, China
	Zheng, Ruilun; Chen, Zheng; Cai, Chao; Tie, Baiqing; Liu, Xiaoli; Reid, Brian J.; Huang, Qing; Lei, Ming; Sun, Guoxin; Baltrenaite, Edita
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2015-07
卷号	22 期号:14 页码:11097-11108
关键词	Biochar Metal(loid) Rice (Oryza sativa L.) Soil contamination Hazard quotient
英文摘要	A field experiment was conducted to investigate the effect of bean stalk (BBC) and rice straw (RBC) biochars on the bioavailability of metal(loid)s in soil and their accumulation into rice plants. Phytoavailability of Cd was most dramatically influenced by biochars addition. Both biochars significantly decreased Cd concentrations in iron plaque (35-81 %), roots (30-75 %), shoots (43-79 %) and rice grain (26-71 %). Following biochars addition, Zinc concentrations in roots and shoots decreased by 25.0-44.1 and 19.9-44.2 %, respectively, although no significant decreases were observed in iron plaque and rice grain. Only RBC significantly reduced Pb concentrations in iron plaque (65.0 %) and roots (40.7 %). However, neither biochar significantly changed Pb concentrations in rice shoots and grain. Arsenic phytoavailability was not significantly altered by biochars addition. Calculation of hazard quotients (HQ) associated with rice consumption revealed RBC to represent a promising candidate to mitigate hazards associated with metal(loid) bioaccumulation. RBC reduced Cd HQ from a 5.5 to 1.6. A dynamic factor's way was also used to evaluate the changes in metal(loid) plant uptake process after the soil amendment with two types of biochar. In conclusion, these results highlight the potential for biochar to mitigate the phytoaccumulation of metal(loid)s and to thereby reduce metal(loid) exposure associated with rice consumption.
研究领域[WOS]	Environmental Sciences
WOS记录号	WOS:000357344300068
公开日期	2016-03-08
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32339]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Zheng, Ruilun,Chen, Zheng,Cai, Chao,et al. Mitigating heavy metal accumulation into rice (Oryza sativa L.) using biochar amendment - a field experiment in Hunan, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2015,22(14):11097-11108.
APA	Zheng, Ruilun.,Chen, Zheng.,Cai, Chao.,Tie, Baiqing.,Liu, Xiaoli.,...&Baltrenaite, Edita.(2015).Mitigating heavy metal accumulation into rice (Oryza sativa L.) using biochar amendment - a field experiment in Hunan, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,22(14),11097-11108.
MLA	Zheng, Ruilun,et al."Mitigating heavy metal accumulation into rice (Oryza sativa L.) using biochar amendment - a field experiment in Hunan, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 22.14(2015):11097-11108.