| Similarity | Rank | |
|---|---|---|
| salinisation | 0.825 | 55212 |
| eutrophication | 0.820 | 42648 |
| precipitation | 0.810 | 14805 |
| acidify | 0.809 | 28689 |
| overgrazing | 0.804 | 43790 |
| waterlogging | 0.792 | 41903 |
| molybdenum | 0.792 | 51774 |
| acidity | 0.788 | 12991 |
| caesium-137 | 0.784 | 59747 |
| depletion | 0.780 | 11015 |
| shallow-water | 0.780 | 88599 |
| humic | 0.776 | 50893 |
| groundwater | 0.776 | 12650 |
| nitrate | 0.774 | 7756 |
| icecap | 0.774 | 88649 |
| high-latitude | 0.771 | 67674 |
| deforestation | 0.769 | 16781 |
| atrazine | 0.767 | 78097 |
| subtropics | 0.767 | 64359 |
| polycyclic | 0.766 | 68633 |
| organochlorine | 0.761 | 48475 |
| cancer-causing | 0.758 | 51516 |
| transpiration | 0.757 | 52292 |
| desertification | 0.756 | 27119 |
| siltation | 0.756 | 76239 |