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| Construction of an evaluation index system to evaluate the remediation effect of cadmium pollution in paddy soils |
| Received:December 20, 2018 |
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| KeyWord:amendments;cadmium contamination;paddy fields;effect evaluation;index system |
| Author Name | Affiliation | E-mail | | WU Xiao-xiao | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | MI Chang-hong | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | WU Hao | Scientific Research Academy of Guangxi Environmental Protection, Nanning 530022, China | | | HU Jun-ming | Agricultural Resource and Environment Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China | | | LIN Da-song | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | lindasong608@126.com | | ZHENG Hong-jie | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | JIAO Wei-xiong | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | |
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| Abstract: |
| To evaluate the remediation effect of cadmium-contaminated paddy fields, theoretical and literature analyses, the Delphi method, and the analytical hierarchy process were used to study the screening of evaluation indexes and weight determination to establish an evaluation index system. Based on the evaluation objective of the remediation effect, the indicator system included 15 indexes in 4 criteria layers that included soil fertility, heavy metal pollution, rice growth safety, and economic security for remediation. For the criterion layer of the indicator system, the weight of the growth safety of rice(0.430)and of heavy metal pollution(0.340)were the largest, whereas the weight for the reduction of available cadmium(0.219)and cadmium content in brown rice(0.259)were the largest among the 15 indexes. The weight distribution of the indicator system shows that food security and soil environmental safety are the main concerns for soil restoration of cadmium-contaminated paddy fields. This study provides a research framework for establishing an evaluation system for the remediation effect of cadmium-contaminated paddy fields. |
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