Table 2 Results of Wilcoxon signed-rank test for Cd, Hg, and Pb concentration in moss and soil
Years | Cd | Hg | Pb |
|---|---|---|---|
Moss | Â | Â | Â |
 1990 to 1995 | 0.60 | 0.80 | 0.00 |
 1990 to 2000 | 0.00 | 0.00 | 0.00 |
 1990 to 2005 | 0.08 | 0.00 | 0.00 |
 1990 to 2010 | 0.00 | 0.65 | 0.00 |
 1995 to 2000 | 0.00 | 0.00 | 0.00 |
 1995 to 2005 | 0.00 | 0.00 | 0.00 |
 1995 to 2010 | 0.00 | 0.30 | 0.00 |
 2000 to 2005 | 0.00 | 0.09 | 0.00 |
 2000 to 2010 | 0.52 | 0.00 | 0.00 |
 2005 to 2010 | 0.00 | 0.00 | 0.00 |
Soil | Â | Â | Â |
 1995 to 2005 | 0.21 | No data | 0.00 |