大气干湿沉降重金属元素通量及对农田土壤的影响——以四川崇州为例

叶娇珑, 钟红梅, 徐争强, 马婵华

Flux of heavy metals in atmospheric dry and wet precipitation and their effects on farmland soil: A case study of Chongzhou,Sichuan

YE Jiao-Long, ZHONG Hong-Mei, XU Zheng-Qiang, MA Chan-Hua

表5 各观测点大气干湿沉降引起土壤重金属元素的年变化率

Table 5 The annual variation rate of heavy metals in soil caused by atmospheric dry and wet deposition

累积时间/a As Hg Cd Cr Cu Ni Pb Zn 1 -0.027 0.022 0.138 0.001 0.009 -0.020 0.040 0.146 3 -0.082 0.066 0.414 0.003 0.026 -0.061 0.121 0.439 5 -0.136 0.110 0.689 0.004 0.043 -0.102 0.201 0.731 10 -0.271 0.220 1.375 0.009 0.085 -0.203 0.401 1.460 20 -0.539 0.439 2.740 0.018 0.170 -0.403 0.800 6.913 50 -1.328 1.087 6.769 0.049 0.422 -0.992 1.979 7.188 100 -2.592 2.138 13.280 0.105 0.839 -1.934 3.890 14.110