Potential use of cotton for remediating heavy metal-polluted soils in southern China
文献类型: 外文期刊
作者: Ma, Xiongfeng 1 ; Zheng, Cangsong 1 ; Li, Wei 1 ; Ai, Shaoying 1 ; Zhang, Zhigang 1 ; Zhou, Xiaojian 1 ; Pang, Chaoyou 1 ; Chen, Haodong 1 ; Zhou, Kehai 1 ; Tang, Mingdeng 1 ; Li, Linfeng 1 ; Wang, Yanhong 1 ; Li, Yichun 1 ; Guo, Lishuang 1 ; Dong, Helin 2 ; Yang, Daigang 3 ;
作者机构: 1.Institute of Cotton Research, State Key Laboratory of Cotton Biology, Chinese Academy of Agricultural Sciences, Anyang 455000, China
2.Chinese Acad Agr Sci, Inst Cotton Res, State Key Lab Cotton Biol, Anyang 455000, Peoples R China
3.;Chinese Acad Agr Sci, Inst Cotton Res, State Key Lab Cotton Biol, Anyang 455000, Peoples R China
4.Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
5.Cotton Sciences Research Institute of Hunan Province, Changde 415101, China
关键词: Cadmium;Cotton;Heavy metal;Phytoremediation;Soil remediation;Southern China
期刊名称:JOURNAL OF SOILS AND SEDIMENTS ( 影响因子:3.308; 五年影响因子:3.586 )
ISSN: 1439-0108
年卷期: 2017 年 17 卷 12 期
页码:
收录情况: SCI
摘要: Southern China is an important agricultural production base, as well as an important mineral resource area. There is a big challenge of heavy metal pollution in the soils of this area. Base on the characterizations of cotton and our present results, we discussed the potentiality to remediate the heavy metal-polluted soils through planting cotton in southern China. This paper summarises recent research to provide a better understanding of the status and the causes of heavy metal pollution in southern China, compare the applicability of different remediation methods in this area, evaluate tolerance and accumulation of cotton to heavy metals, and discuss the socioeconomic benefits of cotton planting for remediation of heavy metal-polluted soils. Human activity could be causing heavy metal pollution in southern China, as lead pollution is the most prevalent and cadmium pollution is the most severe in this area. Physical and chemical methods are used to remediate the heavy metal-polluted soils in southern China, by which treated polluted soils could not satisfactorily address the problems of economic feasibility, "secondary damage" and "secondary pollution". The use of plants can green the environment to a certain extent, so the phytoremediation method is widely accepted. Cotton does not reach the standard of hyperaccumulation plants but has a relatively large biomass and shows more excellent tolerance ability and enrichment ability to heavy metals. Especially, the Cd concentration is lower in cotton fibre than in other cotton organs. Cotton may be a potential crop to ameliorate the heavy metal pollution of farmland in southern China. In addition, cotton remediation combining with multiple repair measures of heavy metal pollution would obtain better repair effect and ecological benefits, and agronomic management practices could also effectively enhance cotton-remedied heavy metal-polluted soils.
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