| Similarity | Rank | |
|---|---|---|
| overgrazing | 0.878 | 43790 |
| salinisation | 0.862 | 55212 |
| reseeding | 0.837 | 65057 |
| siltation | 0.831 | 76239 |
| eutrophication | 0.824 | 42648 |
| cropland | 0.819 | 67849 |
| ground-water | 0.815 | 71264 |
| seepage | 0.810 | 34472 |
| overgrazed | 0.808 | 82229 |
| silting | 0.807 | 58043 |
| rangeland | 0.803 | 74004 |
| semi-natural | 0.803 | 56740 |
| over-grazing | 0.802 | 73877 |
| gley | 0.799 | 47807 |
| roughland | 0.798 | 71546 |
| topsoil | 0.797 | 23559 |
| species-rich | 0.797 | 57871 |
| acidification | 0.792 | 21870 |
| melt-water | 0.789 | 97469 |
| snowmelt | 0.788 | 93451 |
| desiccation | 0.788 | 36800 |
| humus | 0.788 | 34081 |
| algal | 0.785 | 24412 |
| humic | 0.784 | 50893 |
| water-table | 0.783 | 53105 |