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| Analysis of the effects of heavy metal pollution remediation technologies in wheat and maize fields based on bibliometrics |
| Received:June 14, 2020 |
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| KeyWord:wheat;maize;farmland;heavy metal;bibliometrics;remediation technology;passivating agent;improver |
| Author Name | Affiliation | E-mail | | WANG Juan | College of Resources and Environment Sciences, China Agricultural University
Beijing Key Laboratory of Prevention, Control and Restoration of Farmland Soil Pollution, Beijing 100193, China | | | SU De-chun | College of Resources and Environment Sciences, China Agricultural University
Beijing Key Laboratory of Prevention, Control and Restoration of Farmland Soil Pollution, Beijing 100193, China | dcsu@cau.edu.cn |
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| Abstract: |
| The China National Knowledge Infrastructure(CNKI), namely the China Academic Journals Full-text Database, and Web of Science Core Collection Database were used for bibliometrics analysis and statistical classification of relevant literatures on wheat and maize heavy metal-contaminated farmland remediation from 2000 to 2018. The aim was to clearly understand the domestic and foreign research trends and characteristics in this field, and provide a basis for future in-depth research and wider application of different types and effects of remediation technologies under field test conditions. The results showed that local and foreign research development in this field was slow, and although the growth rate had increased since 2010, the degree of concern was significantly lower than that for rice fields. From the perspective of heavy metal types, cadmium pollution was the most studied. The main publication journals in the field of heavy metal pollution restoration of wheat and maize farmland included Journal of Hazardous Materials, Science of the Total Environment, Chemosphere, Journal of Agro-Environmental Science, and Journal of Eco-Environment. Research on application of passivating agent/improver had attracted the most attention. Evaluation of the restoration effect under field conditions indicated that the selection and application of low-cadmium accumulation varieties had the best cadmium reduction effect, with a reduction rate of 57.73%, followed by organic-inorganic composite and inorganic composite repair technologies. Organic-inorganic composite remediation materials and lowaccumulation varieties were both effective technologies and research development directions for the remediation and utilization of wheat and maize heavy metal-contaminated farmland. |
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