Gurun mangrupikeun bentang dimana sakedik curah hujan lumangsung sareng, akibatna, kaayaan hirup nyiptakeun bioma sareng ékosistem anu unik. Kurangna vegetasi ngungkabkeun permukaan taneuh anu henteu dilindungan pikeun deudasi. Kira-kira sapertilu tina beungeut bumi Bumi gersang atawa semi-gersang. Ieu ngawengku loba wewengkon kutub, dimana saeutik curah hujan lumangsung, sarta nu sok disebut deserts kutub atawa "deserts tiis". Gurun bisa digolongkeun dumasar jumlah curah hujan nu ragrag, ku suhu nu prevails, ku sabab desertification atawa dumasar lokasi geografis maranéhanana.
Di dieu luhureun 20 deserts pangbadagna di dunya.
pangkat | ninggalkeun | ngetik | wewengkon |
1. | Gurun Antartika | És kutub jeung tundra | 14,200,000 km2 (5,482,651 sq mi) |
2. | Gurun Arktik | És kutub jeung tundra | 13,900,000 km2 (5,366,820 sq mi) |
3. | Gurun Sahara | Subtropis | 9,200,000 km2 (3,552,140 sq mi) |
4. | Hebat Australia | Subtropis | 2,700,000 km2 (1,042,476 sq mi) |
5. | Gurun Arab | Subtropis | 2,330,000 km2 (899,618 sq mi) |
6. | Gurun Gobi | Usum tiis | 1,295,000 km2 (500,002 sq mi) |
7. | Gurun Kalahari | Subtropis | 900,000 km2 (347,492 sq mi) |
8. | Gurun Patagonian | Usum tiis | 673,000 km2 (259,847 sq mi) |
9. | Gurun Siria | Subtropis | 500,000 km2 (193,051 sq mi) |
10. | Cekungan Ageung | Usum tiis | 492,098 km2 (190,000 sq mi) |
11. | Gurun Chihuahuan | Subtropis | 453,248 km2 (175,000 sq mi) |
12. | Gurun Karakum | Usum tiis | 350,000 km2 (135,136 sq mi) |
13. | Dataran Tinggi Colorado | Usum tiis | 337,000 km2 (130,116 sq mi) |
14. | Gurun Sonoran | Subtropis | 310,000 km2 (119,692 sq mi) |
15. | Gurun Kyzylkum | Usum tiis | 300,000 km2 (115,831 sq mi) |
16. | Gurun Taklamakan | Usum tiis | 270,000 km2 (104,248 sq mi) |
17. | Gurun Ogaden | Subtropis | 256,000 km2 (98,842 sq mi) |
18. | Gurun Thar | Subtropis | 238,254 km2 (91,990 sq mi) |
19. | Gurun Puntland | Subtropis | 200,000 km2 (77,220 sq mi) |
20. | Usyurt Plateau | Sedeng | 200,000 km2 (77,220 sq mi) |