Transfer of Zinc from Soil to Crops in Suburban Areas of Fujian Province, Southeast China
The bioavailability and soil-to-plant transfer of zinc in the soils collected from the vegetable and rice fields in suburban areas of some major cities of Fujian Province were investigated. The total soil Zn ranged from 36.21 mg/kg to 909.26 mg/kg with a mean of 175.57 mg/kg. The organic matter is the most important determinent among the soil parameters (pH, CEC, contents of clay, silt and free iron) for Zn availability in the soils. Zn concentrations in the edible parts of the crops varied between 0.65 and 30.61 mg/kg (Fresh Weight basis). The Zn concentrations of 8 crops showed significant correlations with DTPA-Zn while only those of 4 corps were significantly correlated with total soil Zn. The transfer factors based on total soil Zn (TFTotal) varied from 0.005 to 0.54 and the TFDTPAs from 0.007 and 14.96. The correlations between all the TFDTPAs and DTPA-Zn were significant and most of them were well described by power model (y=ax). The TFDTPAs and TFTotals of all the crops also decreased with DTPA-Zn and total Zn. The average representative TFDTPA values of the crops decreased in the order of rice> water spinach> taro> celery> onion> leaf mustard> pakchoi> fragrant-flowered garlic> cowpea> garlic> radish> cabbage> lettuce> wild rice stem> cauliflower> Chinese cabbage> kidney bean> towel gourd> eggplant> bottle gourd> cabbage mustard> bitter gourd> tomato, suggesting that rice, water spinach and taro should be avoided on Zn contaminated soils.
zinc rice vegetable soil transfer factor
LUO Dan LIU QingFu CHEN Yanhui HUANG Yan STAUNTON Siobhán WANG Guo
Department of Resources and Environmental Sciences,Fujian Agriculture and Forestry University,Fuzhou UMR Rhizosphère and Symbiose,INRA,place Viala,34060 Montpellier,Cedex 2,France
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
436-442
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）