| Similarity | Rank | |
|---|---|---|
| deforestation | 0.874 | 27552 |
| Deforestation | 0.828 | 87781 |
| droughts | 0.798 | 35142 |
| biodiversity | 0.797 | 13376 |
| peatlands | 0.772 | 94373 |
| urbanization | 0.768 | 34036 |
| transboundary | 0.763 | 87423 |
| semi-arid | 0.762 | 75046 |
| intensification | 0.754 | 46916 |
| ecological | 0.750 | 9588 |
| drought | 0.747 | 11046 |
| hydrological | 0.736 | 62436 |
| acidification | 0.734 | 55426 |
| reforestation | 0.733 | 57300 |
| anthropogenic | 0.728 | 46957 |
| climatic | 0.728 | 23497 |
| erosion | 0.728 | 12592 |
| pollution | 0.726 | 5841 |
| ecosystems | 0.725 | 13909 |
| urbanisation | 0.723 | 68943 |
| climate | 0.723 | 2178 |
| rangeland | 0.723 | 93948 |
| extinctions | 0.720 | 71406 |
| Sahel | 0.713 | 65035 |
| grasslands | 0.709 | 33088 |