广西荔浦市土壤—农作物中重金属迁移转化及生态效应

蒋羽雄, 文美兰, 潘启明, 蒋柏昌, 王忠伟

The migration,transformation and ecological effects of heavy metals in soil-cropsystem in Lipu, Guangxi

JIANG Yu-Xiong, WEN Mei-Lan, PAN Qi-Ming, JIANG Bo-Chang, WANG Zhong-Wei

表5 土壤重金属各组分赋存形态比例

Table 5 The percentage of different chemical forms of heavy metals%

形态 Cd Pb As Hg Cr 可交换态(水溶态+ 离子交换态) 23.69 2.04 0.82 0.22 0.24 碳酸盐结合态+腐殖酸 结合态+铁锰结合 态+强有机结合态 63.02 56.12 7.14 38.93 8.31 残渣态 13.27 41.84 92.04 60.85 91.45