分面浏览：学科主题 |
| 当前检索式 | ((ALL：net primary productivity)) |
| 限定条件 | ((学科主题：Ecology)) |
| Ecology 39 | Environmental Sciences 8 | Plant Sciences 8 |
| Biodiversity Conservation 7 | Forestry 5 | Evolutionary Biology 4 |
| Geosciences, Multidisciplinary 4 | Geography, Physical 2 | Environment 1 |
| Soil Science 1 |
