Table 4 Summary of biome-level Hg deposition and soil Hg turnover times [60]
Biome | Mean Hg deposition (g m−2) | Mean soil Hg turnover timea (years) | ||
|---|---|---|---|---|
Preindustrial | Present day | Preindustrial | Present day | |
Tropical forest | 0.9 | 3.7 | 234 | 126 |
Temperate forest | 0.8 | 2.9 | 250 | 151 |
Boreal forest | 0.5 | 1.5 | 998 | 560 |
Grassland | 1.0 | 3.5 | 522 | 269 |
Tundra | 0.3 | 0.8 | 1108 | 702 |
Desert | 0.5 | 1.4 | 2387 | 1748 |