临安山核桃主产区林地土壤重金属生态风险评价

刘道荣, 郑基滋, 占玄, 吴问丹

Ecological risk evaluation of heavy metals in soils of Carya cathayensis plantations, Lin'an

Dao-Rong LIU, Ji-Zi ZHENG, Xuan ZHAN, Wen-Dan WU

表4 各地质背景区表层土壤元素含量平均值

Table 4 Average concentrations of elements in surface soils of study area with different geological settings

地层 样品数 Cu Pb Zn Ni Cr Cd As Hg Se Ge 有机质 F pH 侏罗系 2 12.7 30.4 61.3 11.2 29.9 0.17 5.88 117 0.29 1.51 2.79 500 5.46 震旦系 4 26.2 48.1 106 26.1 47.2 1.45 15.8 109 0.62 1.13 4.36 785 6.70 寒武系 11 45.9 34.5 116 47.4 87.1 0.64 34.3 87.8 0.81 1.69 3.32 1085 5.76 奥陶系 15 33.5 34.3 98.4 39.8 88.4 0.24 23.3 98.8 0.49 1.72 3.36 775 5.71 平均值 32 35.5 35.9 103 38.9 79.1 0.53 25.1 97.4 0.61 1.62 3.43 865 5.83