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2 土壤重金属元素含量特征值统计(n=3967)

Table 2 Statistical characteristic values of heavy metal elements in soil(n=3967)

元素 均值/10-6 变异系数 极小值/10-6 极大值/10-6 全国土壤背景值[8] /10-6 广西土壤背景值[8] /10-6 As 13.57 1.10 1.22 278.00 11.2 20.50 Cd 0.33 1.46 0.03 9.24 0.10 0.27 Cr 87.06 0.57 12.60 785.00 61.00 82.10 Hg 0.15 0.65 0.02 1.61 0.07 0.15 Ni 27.49 0.88 5.45 513.00 26.90 26.60 Pb 30.46 0.45 10.30 354.00 26.00 24.00 Cu 27.94 0.47 6.20 182.00 22.60 27.80 Zn 82.53 0.55 18.70 414.00 74.20 75.60