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| Cadmium accumulation characteristics of different vegetables in greenhouse soils in the Beijing, Tianjin, and Hebei (BTH)Area, China |
| Received:July 11, 2018 Revised:September 17, 2018 |
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| KeyWord:Beijing-Tianjin-Hebei Areas (BTH);greenhouse soil;cadmium;leaf vegetables;substitution plantation;species sensitivity distribution curve (SSD) |
| Author Name | Affiliation | E-mail | | GAO Xin | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture of China, Beijing 100081, China
College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China | | | YAN Meng-meng | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture of China, Beijing 100081, China | | | ZENG Xi-bai | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture of China, Beijing 100081, China | | | BAI Ling-yu | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture of China, Beijing 100081, China | | | WANG Ya-nan | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture of China, Beijing 100081, China | | | CHEN Qing | College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China | | | ZHAO Hui-wei | The Semi-arid Agriculture Science and Technology Research Center of China, Shijiazhuang 050051, China | | | SU Shi-ming | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture of China, Beijing 100081, China | sushiming@caas.cn |
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| Abstract: |
| It is very important to understand cadmium (Cd)accumulation in greenhouse vegetables in the Beijing, Tianjin, and Hebei (BTH)Area, where Cd low-cumulative vegetable varieties have been screened out, to ensure the safety of agricultural products and the health of residents through substitution plantations. Based on the vegetable types and varieties planted in the BTH, this study involved outdoor surveys and field plot experiments. The results indicated that leafy vegetables had a higher risk of Cd accumulation than melon and fruit; the latter was recommended for planting in Cd-contaminated greenhouse soils. When the Cd content in the soils reached 0.76 mg·kg-1, the Cd content in different leafy vegetables decreased in the following order:Arugula (Eruca sativa Mill.), Oil wheat (Lactuca sativa var longifoliaf. Lam), Spinach (Spinacia oleracea L.), Mustard (Brassica juncea (L.)Czern. et Coss.), Chives (Amaranthus tricolor L.) Lettuce (var. ramosa Hort.), Dish heart (Brassica campestris L.), Chicory (Sonchus oleraceus L.), Chinese cabbage (Brassica campestris L.), Coffee dish (Brassica pekinensis R.), Crowndaisy chrysanthemum (Chrysanthemum coronarium L.). The highest Cd content was 0.13 mg·kg-1 by leaf fresh weight (Arugula), while the lowest Cd content was 0.005 mg·kg-(1 Crowndaisy chrysanthemum). Further studies of Cd accumulation in 64 leafy vegetable cultivars showed that the Cd contents in the Artemisia, Coffee dish, Cuiying 256 and Texuan Artemisia scoparia were lower than 0.01 mg·kg-1 by fresh weight, which is below the limit (0.2 mg·kg-1)specified by National Food Safety Quality Standards. Furthermore, the sensitivity of the 64 leaf vegetable cultivars to soil Cd was evaluated using a species sensitivity distribution curve (SSD). Coffee McDonald's, Vegetable Spinach No.2, Arugula and Jiayuan mustard were the most sensitive to soil Cd toxicity, while Crowndaisy chrysanthemum was an insensitive variety. Significant differences were observed in Cd accumulation among different types or varieties of vegetables. It is highly significant to screen Cd low-cumulative vegetable varieties for future substitution plantations in Cd-contaminated soils. |
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