Open Access
Table 1.
Average productivity (food units) by catchments in selected years
| Years | Control | The catchment area with forestbelts | Increase,+/‐ |
|---|---|---|---|
| 1986 | 50.1 | 52.4 | 2.3 |
| 1994 | 49.0 | 54.3 | 5.3 |
| 2010 | 26.6 | 33.0 | 6.4 |
| 2020 | 59.8 | 66.8 | 7.0 |
| Average | 46.5 | 51.6 | 5.2 |
| NSR05 | 2.2 | ||
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