Table 1 (A) Pedoclimatic conditions: TAP, total annual precipitation; TSP, total summer precipitation (from May to August); MAT, mean annual temperature; MST, mean summer temperature; mean summer soil water content at 20 cm in depth in the different silvicultural systems, between 2009 and 2012. (B) Soil texture, composition, and pH for the 0–20- and 0–40-cm-deep layers at Guéméné-Penfao
A | 2009 | 2010 | 2011 | 2012 |
|---|---|---|---|---|
Climate | ||||
TAP (mm) | 764 | 599 | 608 | 809 |
TSP (mm) | 223 | 148 | 286 | 219 |
MAT (°C) | 11.5 | 10.8 | 12.5 | 11.5 |
MST (°C) | 16.7 | 16.7 | 16.2 | 16.4 |
Mean summer soil water content (%) | ||||
Black locust SRC | 19.9 ± 2.1 | 17.6 ± 2.3 | 24.6 ± 1.9 | |
Poplar SRC | 17.5 ± 1.9 | 18.2 ± 3.1 | 26.8 ± 0.2 | |
Black locust SRF | 16.8 ± 1.9 | 14.8 ± 0.1 | 21.8 ± 0.9 | |
Poplar SRF | 14.1 ± 0.4 | 14.1 ± 0.2 | 21.3 ± 2.3 | |
B | Soil layer | |||
0–20 cm | 20–40 cm | |||
Texture (g kg−1) | ||||
Clay | 200.0 ± 8.9 | 204.9 ± 7.3 | ||
Silt | 212.9 ± 4.8 | 211.4 ± 5.3 | ||
Sand | 187.1 ± 10.0 | 186.2 ± 9.3 | ||
Composition (g kg−1) | ||||
Organic C | 23.0 ± 1.4 | 14.0 ± 0.8 | ||
Total N | 1.7 ± 0.1 | 1.1 ± 0.1 | ||
Organic matter | 39.8 ± 2.4 | 24.3 ± 1.4 | ||
pH | 6.8 ± 0.1 | 6.6 ± 0.1 | ||