| Caledon conifer forest(expression, forest, area, temperate, coniferous) |
| Canary Islands dry woodlands and forest(expression, forest, area, ecoregion, scrub) |
| Cantabrian mixed forest(expression, forest, area, broadleaf, mixed) |
| Cantabric Coast(expression, area, ecoregion, zone, spain) |
| Carpathian montane conifer forest(expression, forest, area, temperate, coniferous) |
| Caspian Hyrcanian mixed forest(expression, forest, area, broadleaf, mixed) |
| Caspian lowland desert(expression, area, ecoregion, zone, russia) |
| Celtic broadleaf forest(expression, forest, area, broadleaf, mixed) |
| Central China loess plateau mixed forest(expression, forest, area, broadleaf, mixed) |
| Central European mixed forest(expression, forest, area, broadleaf, mixed) |
| Central Korean deciduous forest(expression, forest, area, broadleaf, mixed) |
| Changbai Mountains mixed forest(expression, forest, area, broadleaf, mixed) |
| Changjiang Plain evergreen forest(expression, forest, area, broadleaf, mixed) |
| Cherskii-Kolyma mountain tundra(expression, area, ecoregion, zone, russia) |
| Chhota-Nagpur dry forest(expression, area, zone, terrestrial, india) |
| Chukchi Peninsula tundra(expression, area, ecoregion, zone, russia) |
| Chukchi Sea(expression, area, zone, russia, arctic) |
| Corsican montane broadleaf and mixed forest(expression, forest, area, ecoregion, scrub) |
| Crete Mediterranean forest(expression, forest, area, ecoregion, scrub) |
| Cyprus Mediterranean forest(expression, forest, area, ecoregion, scrub) |