| Similarity | Rank | |
|---|---|---|
| overgrazing | 0.880 | 43790 |
| waterlogging | 0.862 | 41903 |
| leguminous | 0.853 | 59643 |
| subtropics | 0.851 | 64359 |
| eutrophication | 0.851 | 42648 |
| over-grazing | 0.849 | 73877 |
| atrazine | 0.842 | 78097 |
| deglaciation | 0.842 | 67146 |
| reseeding | 0.837 | 65057 |
| high-latitude | 0.836 | 67674 |
| biogeochemical | 0.833 | 71552 |
| nitrogen-fixing | 0.833 | 66398 |
| magmatism | 0.827 | 82076 |
| cropland | 0.827 | 67849 |
| humic | 0.827 | 50893 |
| acidification | 0.825 | 21870 |
| silviculture | 0.825 | 72787 |
| recolonisation | 0.824 | 97352 |
| shallow-water | 0.824 | 88599 |
| periglacial | 0.823 | 45595 |
| siltation | 0.823 | 76239 |
| salination | 0.823 | 86940 |
| icecap | 0.822 | 88649 |
| fuelwood | 0.821 | 39541 |
| overgrazed | 0.820 | 82229 |