分面浏览：学科主题 |
| 当前检索式 | ((ALL：Semi-arid region)) |
| 限定条件 | ((学科主题：Environmental Sciences)) |
| Environmental Sciences 18 | Ecology 4 | Geosciences, Multidisciplinary 2 |
| Soil Science 2 | Agriculture, Multidisciplinary 1 | Biodiversity Conservation 1 |
| Meteorology & Atmospheric Sciences 1 | Water Resources 1 |
