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Remediation of a Magnesium-Contaminated Soil by Chemical Amendments and Leaching

文献类型：期刊论文

作者Zhao, Qiong2; Wang, Hong-Quan1,2; Zeng, De-Hui2; Hu, Ya-Lin2; Yu, Zhan-Yuan2
刊名LAND DEGRADATION & DEVELOPMENT
出版日期2015-08-01
卷号26期号:6页码:613-619
关键词Magnesium Dust Soil Remediation Soil Ph Calcium Dihydrogen Phosphate p Availability
ISSN号1085-3278
DOI10.1002/ldr.2362
英文摘要The deposition of magnesium (Mg)-rich dust from magnesite mining activities has resulted in serious land degradation. However, the main factors limiting plant growth in Mg-contaminated soils are unclear. Moreover, little information is available on the remediation of Mg-contaminated soils. In this study, remediation of soils contaminated with Mg-rich dust was investigated in a pot experiment using maize as the indicator plant. There were five treatments: (i) control; (ii) leaching; (iii) application of CaCl2; (iv) leaching+CaCl2 application; and (v) application of Ca(H2PO4)(2)H2O. Soil properties and growth of maize (Zea mays L.) seedlings were measured. Leaching alone significantly decreased soluble Mg concentration. Leaching+CaCl2 application greatly increased exchangeable Ca concentration and decreased soil pH by 03 units. Application of CaCl2 alone increased soluble Mg concentration sharply, which directly inhibited the germination of maize seeds. Application of Ca(H2PO4)(2)H2O significantly increased the concentrations of exchangeable Ca and available phosphorus and decreased soil pH by 17 units. The biomass of maize seedlings increased in the order of control=leaching)H2O. These results suggested that the plant growth in Mg-contaminated soils was limited primarily by Ca deficiency and secondarily by high soil pH when exchangeable Ca was sufficient. High soil pH suppressed plant growth probably mainly by inhibiting phosphate uptake from the soil. Applying acid Ca salt with low solubility is an attractive option for the remediation of Mg-contaminated soils. Copyright (c) 2015 John Wiley & Sons, Ltd.
WOS研究方向Environmental Sciences & Ecology ; Agriculture
语种英语
WOS记录号WOS:000359669600009
出版者WILEY-BLACKWELL
源URL[http://210.72.129.5/handle/321005/122155]  
专题中国科学院沈阳应用生态研究所
通讯作者Zhao, Qiong
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Qiong,Wang, Hong-Quan,Zeng, De-Hui,et al. Remediation of a Magnesium-Contaminated Soil by Chemical Amendments and Leaching[J]. LAND DEGRADATION & DEVELOPMENT,2015,26(6):613-619.
APA Zhao, Qiong,Wang, Hong-Quan,Zeng, De-Hui,Hu, Ya-Lin,&Yu, Zhan-Yuan.(2015).Remediation of a Magnesium-Contaminated Soil by Chemical Amendments and Leaching.LAND DEGRADATION & DEVELOPMENT,26(6),613-619.
MLA Zhao, Qiong,et al."Remediation of a Magnesium-Contaminated Soil by Chemical Amendments and Leaching".LAND DEGRADATION & DEVELOPMENT 26.6(2015):613-619.

入库方式： OAI收割

来源：沈阳应用生态研究所

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