Ecological restoration of an acidic Cd contaminated soil using bamboo biochar application
文献类型：期刊论文
| 作者 | Mohamed, Ibrahim2,3,4; Chen, Fang2,4; Liu, Yi2; Li, Zhi-guo2; Zhang, Guo-shi2; Dai, Ke1 |
| 刊名 | ECOLOGICAL ENGINEERING
 |
| 出版日期 | 2015-11-01 |
| 卷号 | 84页码:67-76 |
| 关键词 | Bamboo biochar Cd Phytoavailability Fractionation Plant growth |
| ISSN号 | 0925-8574 |
| DOI | 10.1016/j.ecoleng.2015.07.009 |
| 英文摘要 | Biochar is an organic amendment with good effects on soil properties but its influence on Cd fractionation and growth of vegetable crops (e.g. Chinese cabbage) and field crops (e.g. maize) is still restricted. A pot experiment was conducted to investigate the effect of biochar derived from bamboo residues (pyrolyzed at temperature of 400 degrees C) at four levels (0%, 0.5%, 1% and 1.5%) on Cd solubility and bioavailability, and plant growth in a loamy soil artificially contaminated with Cd at three rates (0, 5 and 50 mg kg(-1)). The soil was strongly acidic (pH = 4.63) with low organic carbon content (1.064 g kg(-1)). Chinese cabbage and maize were used as indicator plants in this investigation. Addition of babmboo biochar significantly increased soil pH, electrical conductivity (EC), organic carbon (SOC), and cation exchange capacity (CEC). Concentrations of Cd in CaCl2 and DTPA extractions decreased due to the increase of biochar rates but there were no alterations noticed in total concentrations of Cd in the soil. The acid soluble/exchangeable Cd decreased by 3.35-3.88 times, but the reducible and oxidizable fractions of Cd increased by 1.95-1.96 times and 1.91-2.14 times, respectively, after harvesting cabbage and maize plants in the presence of 1.5% biochar. Changes of soil properties, especially pH could be used as a good reason to illustrate the immobilization of Cd in biochar treated soils. The increase of biochar rates from 0% to 1.5% enhanced the growth of cabbage by 64.23%, 47.31% and 34.93%, and maize by 50.78%, 32.83% and 29.68% in soils treated with Cd at 0, 5 and 50 mg kg(-1), respectively. Using biochar at a dose of 1.5% diminished concentrations of Cd in cabbage shoots by 4.71-2.29 times and in maize shoots by 5.17-2.68 times, respectively. Our results suggested that bamboo biochar had positive residual effects on maize after the harvest of cabbage. Finally, bamboo biochar, especially at its highest rate (1.5%) could be recommended as a safe amendment in the immobilization of Cd in contaminated agricultural soils and then reduced its threat on the food chain and human health. (C) 2015 Published by Elsevier B.V. |
| 资助项目 | Natural Science Foundation Projects of China[41471242] ; Natural Science Foundation Projects of China[31201618] ; Natural Science Foundation Projects of China[31370529] ; Natural Science Foundation Projects of China[31100386] ; Natural Science Foundation of Hubei Province[2012FFB0570] ; International Plant Nutrition Institute[IPNI-HB-33] |
| WOS研究方向 | Environmental Sciences & Ecology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000363948000010 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/186]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Mohamed, Ibrahim |
| 作者单位 | 1.Huazhong Agr Univ, Coll Resources & Environm, Key Lab Arable Land Conservat Middle & Lower Reac, Minist Agr, Wuhan 430070, Peoples R China 2.Int Plant Nutr Inst, China Program, Wuhan 430074, Peoples R China 3.Benha Univ, Fac Agr, Dept Soil Sci, Toukh 13736, Kalyoubia, Egypt 4.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei Province, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mohamed, Ibrahim,Chen, Fang,Liu, Yi,et al. Ecological restoration of an acidic Cd contaminated soil using bamboo biochar application[J]. ECOLOGICAL ENGINEERING,2015,84:67-76. |
| APA | Mohamed, Ibrahim,Chen, Fang,Liu, Yi,Li, Zhi-guo,Zhang, Guo-shi,&Dai, Ke.(2015).Ecological restoration of an acidic Cd contaminated soil using bamboo biochar application.ECOLOGICAL ENGINEERING,84,67-76. |
| MLA | Mohamed, Ibrahim,et al."Ecological restoration of an acidic Cd contaminated soil using bamboo biochar application".ECOLOGICAL ENGINEERING 84(2015):67-76. |
入库方式： OAI收割
来源：武汉植物园
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