Table 11 List of the abbreviations with explanations and units for (a) climate and stand structural variables, (b) organic layer variables and (c) mineral soil variables used in the detrended correspondence analysis (DCA)
(a) Climate and stand structural variables | (c) Mineral soil variables | ||||
Abbreviation | Explanation | Unit | Abbreviation | Explanation | Unit |
Tmin | Average temp. of coldest month | °C | Sand [%] | Sand content in 20–40 cm | % |
Tmax | Average temp. of hottest month | °C | Silt [%] | Silt content in 20–40 cm | % |
Pmin | Average prec. of driest month | mm | Clay [%] | Clay content in 20–40 cm | % |
Pmax | Average prec. of wettest month | mm | pAWC [%] | Plant available water capacity in 20–40 cm | % |
MST (BIO10) | Mean summer (Jun, Jul, Aug) temp | °C | pH | Mean soil pH (in H2O) from all 3 depths | |
MWT | Mean winter (Dec, Jan, Feb) temp | °C | Ca+2ex pool | BaCl2-exchangeable Ca+2 pool in 0–40 cm | kmolc ha−1 |
MSP (BIO18) | Mean summer (Jun, Jul, Aug) prec | mm | Mg+2ex pool | Total BaCl2-exchangeable Mg+2 in 0–40 cm | kmolc ha−1 |
MWP | Mean winter (Dec, Jan, Feb) prec | mm | K+ex pool | Total BaCl2-exchangeable K+ in 0–40 cm | kmolc ha−1 |
Elev | Elevation above sea level | m | CEC | Cation exchange capacity | molc kg−1 |
Slope | Plot slope angle | ° | BS | Base saturation | % |
Exposition | Plot exposition | ° | SOC 0–10 cm | SOC concentration in 0–10 cm | mg g−1 |
Stem | Mean number of stems | ha−1 | SOC 10–20 cm | SOC concentration in 10–20 cm | mg g−1 |
BA | Mean basal area of stems | m2 ha−1 | SOC 20–40 cm | SOC concentration in 20–40 cm | mg g−1 |
Tree vol | Mean tree volume | m3 ha−1 | SOC pool | Total SOC pool in 0–100 cm | Mg ha−1 |
AGC | Mean above ground carbon pool | Mg ha−1 | STN 0–10 cm | STN concentration in 0–10 cm | mg g−1 |
STN 10–20 cm | STN concentration in 10–20 cm | mg g−1 | |||
(b) Organic layer variables | STN 20–40 cm | STN concentration in 20–40 cm | mg g−1 | ||
Abbreviation | Explanation | Unit | STN pool | Total STN pool in 0–100 cm | Mg ha−1 |
Org. matter | Weight of org. matter | Mg ha−1 | Pav 0–10 cm | Resin exchangeable P concentration in 0–10 cm | mg kg−1 |
OL pH | pH (in H2O) of org. layer | Pav10–20 cm | Resin exchangeable P concentration in 10–20 cm | mg kg−1 | |
OL C | C concentration in org. layer | mg g−1 | Pav 20–40 cm | Resin exchangeable P concentration in 20–40 cm | mg kg−1 |
OL C pool | C pool in org. layer | Mg ha−1 | Pav pool | Resin exchangeable P pool in 0–100 cm | kg ha−1 |
OL N | N concentration in org. layer | mg g−1 | C/N 0–10 cm | C/N ratio in 0–10 cm | g g−1 |
OL N pool | N pool in org. layer | kg ha−1 | C/N 10–20 cm | C/N ratio in 10–20 cm | g g−1 |
OL P pool | P pool in org. layer | kg ha−1 | C/N 20–40 cm | C/N ratio in 20–40 cm | g g−1 |
OL Ca pool | Ca pool in org. layer | kg ha−1 | C/P 10–20 cm | C/P ratio in 10–20 cm | g g−1 |
OL Mg pool | Mg pool in org. layer | kg ha−1 | C/P 0–10 cm | C/P ratio in 0–10 cm | g g−1 |
OL K pool | K pool in org. layer | kg ha−1 | C/P 20–40 cm | C/P ratio in 20–40 cm | g g−1 |
OL C/N | C/N ratio in org. layer | g g−1 | N/P 0–10 cm | N/P ratio in in 0–10 cm | g g−1 |
OL C/P | C/P ratio in org. layer | g g−1 | N/P 10–20 cm | N/P ratio in 10–20 cm | g g−1 |
OL N/P | N/P ratio in org. layer | g g−1 | N/P 20–40 cm | N/P ratio in 20–40 cm | g g−1 |