Open Access
Table V
Critical points for determination of least limiting water range (LLWR) for root growth. ρb, bulk density (g/cm3) , θfc, water content at field capacity (–0.01 MPa), θwp, water content at wilting point (–1.5 MPa), θss, water content at 3 MPa soil strength, θafp, water content at 10% air-filled porosity and AWC, available water capacity. Values in italics represent the upper and lower limits of LLWR.
| Oak | Beech | 40 y Pine | 16 y Pine | 3 y Pine | |
|---|---|---|---|---|---|
| ρb | 1.20 | 1.29 | 1.09 | 1.15 | 1.35 |
| θfc | 0.40 | 0.36 | 0.39 | 0.31 | 0.24 |
| θwp | 0.18 | 0.15 | 0.20 | 0.15 | 0.10 |
| θss | 0.22 | 0.20 | 0.22 | 0.17 | 0.19 |
| θafp | 0.44 | 0.41 | 0.49 | 0.46 | 0.38 |
| LLWR | 0.19 | 0.16 | 0.18 | 0.14 | 0.05 |
| AWC | 0.28 | 0.21 | 0.19 | 0.16 | 0.14 |