Long-term effects of biochar on rice production and stabilisation of cadmium and arsenic levels in contaminated paddy soils

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

	Long-term effects of biochar on rice production and stabilisation of cadmium and arsenic levels in contaminated paddy soils
	Chen, Peng ; Wang, Hong-Yan ; Zheng, Rui-Lun ; Zhang, Bo ; Sun, Guo-Xin
刊名	EARTH AND ENVIRONMENTAL SCIENCE TRANSACTIONS OF THE ROYAL SOCIETY OF EDINBURGH
	2019-06
卷号	109 期号:3-4 页码:415-420
关键词	dissolved organic matter immobilisation pH value remediation total organic carbon
ISSN号	1755-6910
英文摘要	Heavy metal contamination in the paddy soils of China is a serious concern because of its health risk through transfer in food chains. A field experiment was conducted in 2014-2015 to investigate the long-term effects of different biochar amendments on cadmium (Cd) and arsenic (As) immobilisation in a contaminated paddy field in southern China. Two types of biochar, a rice-straw-derived biochar (RB) and a coconut-by-product-derived biochar (CB), were amended separately to determine their impacts on rice yield and their efficacy in reducing Cd and As in rice. The two-year field experiment showed that biochar amendments significantly improved the rice yields and that CB is superior to RB, especially in the first growth season. Using a large amount of biochar amendment (22.5tha(-1)) significantly increased soil pH and total organic carbon, and concomitantly decreased the Cd content in rice grains over the four growth seasons, regardless of biochar type and application rate. Arsenic levels in rice were similar to the control, and results from this study suggest that there was a sustainable effect of biochar on Cd sequestration in soil and reduction of Cd accumulation in rice for at least two years. Biochar amendment in soil could be considered as a sustainable, reliable and cost-effective option to remediate heavy metal contamination in paddy fields for long periods.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42753]
专题	生态环境研究中心_城市与区域生态国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Urban & Reg Ecol, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China 3.Beijing Acad Agr & Forestry Sci, Res & Dev Ctr Grasses & Environm, Beijing 100097, Peoples R China 4.Univ Aberdeen, Inst Biol & Environm Sci, Aberdeen AB24 3UU, Scotland
推荐引用方式 GB/T 7714	Chen, Peng,Wang, Hong-Yan,Zheng, Rui-Lun,et al. Long-term effects of biochar on rice production and stabilisation of cadmium and arsenic levels in contaminated paddy soils[J]. EARTH AND ENVIRONMENTAL SCIENCE TRANSACTIONS OF THE ROYAL SOCIETY OF EDINBURGH,2019,109(3-4):415-420.
APA	Chen, Peng,Wang, Hong-Yan,Zheng, Rui-Lun,Zhang, Bo,&Sun, Guo-Xin.(2019).Long-term effects of biochar on rice production and stabilisation of cadmium and arsenic levels in contaminated paddy soils.EARTH AND ENVIRONMENTAL SCIENCE TRANSACTIONS OF THE ROYAL SOCIETY OF EDINBURGH,109(3-4),415-420.
MLA	Chen, Peng,et al."Long-term effects of biochar on rice production and stabilisation of cadmium and arsenic levels in contaminated paddy soils".EARTH AND ENVIRONMENTAL SCIENCE TRANSACTIONS OF THE ROYAL SOCIETY OF EDINBURGH 109.3-4(2019):415-420.