Predictor | Description | |
---|---|---|
QURO-1 | T_Jul_Sep | Average temperature from July to September, previous growing season |
T_MAR | Average March temperature, current growing season | |
T_APR | Average April temperature, current growing season | |
T_MAY | Average May temperature, current growing season | |
T_JUN | Average June temperature, current growing season | |
P_JAN-MAR | Sum of precipitation from January to March, current growing season | |
QURO-2 | T_Jul-Nov | Average temperature from July to November, previous growing season |
T_JAN | Average January temperature, current growing season | |
T_APR | Average April temperature, current growing season | |
T_MAY | Average May temperature, current growing season | |
T_JUN | Average June temperature, current growing season |
Month | QURO-1 | QURO-2 | |||
---|---|---|---|---|---|
TEMP | PREC | TEMP | PREC | ||
Previous growing season | Jul | 0.45 | 0.53 | ||
Aug | 0.49 | 0.46 | |||
Sep | 0.37 | 0.38 | |||
Oct | 0.35 | ||||
Nov | 0.37 | ||||
Dec | |||||
Jul–Sep | 0.57 | ||||
Jul–Nov | 0.71 | ||||
Current growing season | JAN | –0.41 | 0.44 | ||
FEB | |||||
MAR | 0.38 | –0.33 | |||
APR | 0.60 | 0.63 | |||
MAY | 0.32 | 0.47 | |||
JUN | 0.47 | 0.50 | |||
JAN–MAR | –0.43 |
Location / Site denotation | Year of sampling | Latitude | Longitude | Elevation (m) | Bedrock | Forest soil type | Meteorological station | Average age of measured tree |
---|---|---|---|---|---|---|---|---|
2012 | N46°18′21′′ | E15°30′35′′ | 280–315 | Marl | Eutric brown soil | Maribor | 150 | |
2015 | N46°11′23′′ | E14°25′26′′ | 360–365 | Alluvial loams and clays | Dystric brown soil | Ljubljana | 90 |
Mean ± Std | Min – Max | |||||||
---|---|---|---|---|---|---|---|---|
Site | N | Chronology span | (μm2 104) | (μm2 104) | r̄ | AC_1 | AC_2 | AC_3 |
6 | 2012–1961 | 6.259 ± 0.603 | 5.133–7.743 | 0.44 | 0.42 | 0.40 | 0.31 | |
8 | 2015–1961 | 4.691 ± 0.395 | 4.072–5.756 | 0.32 | 0.61 | 0.52 | 0.46 |
MLR | ANN | MT | BMT | RF | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|
mean | std | mean | std | mean | std | mean | std | mean | std | ||
(A) QURO-1 | |||||||||||
rtrain | 0.797 | 0.037 | 0.815 | 0.043 | 0.789 | 0.059 | 0.810 | 0.030 | 0.898 | 0.018 | |
rtest | 0.694 | 0.103 | 0.095 | 0.633 | 0.134 | 0.692 | 0.112 | 0.689 | 0.097 | ||
RMSEtrain | 0.356 | 0.027 | 0.343 | 0.042 | 0.359 | 0.047 | 0.360 | 0.025 | 0.302 | 0.022 | |
RMSEtest | 0.453 | 0.063 | 0.066 | 0.488 | 0.079 | 0.447 | 0.065 | 0.453 | 0.066 | ||
RRSEtrain | 0.601 | 0.048 | 0.580 | 0.077 | 0.606 | 0.080 | 0.608 | 0.041 | 0.510 | 0.035 | |
RRSEtest | 0.786 | 0.134 | 0.123 | 0.845 | 0.148 | 0.771 | 0.106 | 0.778 | 0.083 | ||
dtrain | 0.877 | 0.026 | 0.878 | 0.059 | 0.871 | 0.042 | 0.851 | 0.030 | 0.898 | 0.019 | |
dtest | 0.794 | 0.066 | 0.073 | 0.753 | 0.081 | 0.757 | 0.067 | 0.723 | 0.069 | ||
REtest | 0.405 | 0.227 | 0.184 | 0.312 | 0.257 | 0.435 | 0.158 | 0.429 | 0.110 | ||
CEtest | 0.364 | 0.237 | 0.202 | 0.265 | 0.273 | 0.394 | 0.174 | 0.387 | 0.132 | ||
DEtest | 0.317 | 0.249 | 0.215 | 0.210 | 0.289 | 0.348 | 0.188 | 0.339 | 0.155 | ||
rank | rank1 | rank | rank1 | rank | rank1 | rank | rank1 | rank | rank1 | ||
rtrain | 3.92 | 0.00 | 2.67 | 0.02 | 4.16 | 0.03 | 2.95 | 0.00 | 1.05 | 0.95 | |
rtest | 2.91 | 0.11 | 3.93 | 0.06 | 2.93 | 0.15 | 3.12 | 0.20 | |||
RMSEtrain | 3.45 | 0.00 | 2.33 | 0.05 | 3.93 | 0.07 | 3.90 | 0.00 | 1.13 | 0.88 | |
RMSEtest | 2.95 | 0.14 | 3.86 | 0.06 | 2.82 | 0.12 | 3.22 | 0.21 | |||
RRSEtrain | 3.45 | 0.00 | 2.33 | 0.05 | 3.93 | 0.07 | 3.90 | 0.00 | 1.13 | 0.88 | |
RRSEtest | 2.95 | 0.14 | 3.86 | 0.06 | 2.82 | 0.12 | 3.22 | 0.21 | |||
dtrain | 2.64 | 0.07 | 2.52 | 0.13 | 3.39 | 0.13 | 4.71 | 0.00 | 1.49 | 0.68 | |
dtest | 2.18 | 0.24 | 3.32 | 0.09 | 3.45 | 0.02 | 4.29 | 0.03 | |||
REtest | 2.96 | 0.14 | 3.86 | 0.06 | 2.82 | 0.12 | 3.22 | 0.21 | |||
CEtest | 2.96 | 0.14 | 3.86 | 0.06 | 2.82 | 0.12 | 3.22 | 0.21 | |||
DEtest | 2.95 | 0.14 | 3.86 | 0.06 | 2.82 | 0.12 | 3.22 | 0.21 | |||
Overalltrain | 3.37 | 0.02 | 2.46 | 0.06 | 3.85 | 0.08 | 3.86 | 0.00 | 1.20 | 0.85 | |
Overalltest | 2.75 | 0.16 | 3.74 | 0.07 | 3.00 | 0.11 | 3.46 | 0.16 | |||
rtrain | 0.796 | 0.044 | 0.843 | 0.035 | 0.800 | 0.039 | 0.839 | 0.028 | 0.907 | 0.020 | |
rtest | 0.717 | 0.093 | 0.084 | 0.687 | 0.104 | 0.740 | 0.087 | 0.747 | 0.094 | ||
RMSEtrain | 0.232 | 0.019 | 0.209 | 0.027 | 0.232 | 0.019 | 0.216 | 0.015 | 0.180 | 0.013 | |
RMSEtest | 0.293 | 0.041 | 0.042 | 0.297 | 0.040 | 0.278 | 0.040 | 0.274 | 0.043 | ||
RRSEtrain | 0.601 | 0.058 | 0.541 | 0.080 | 0.602 | 0.052 | 0.560 | 0.044 | 0.465 | 0.044 | |
RRSEtest | 0.792 | 0.164 | 0.150 | 0.801 | 0.147 | 0.745 | 0.126 | 0.733 | 0.107 | ||
dtrain | 0.874 | 0.032 | 0.899 | 0.059 | 0.866 | 0.030 | 0.883 | 0.024 | 0.921 | 0.018 | |
dtest | 0.793 | 0.057 | 0.077 | 0.765 | 0.068 | 0.789 | 0.052 | 0.782 | 0.058 | ||
REtest | 0.410 | 0.253 | 0.202 | 0.401 | 0.234 | 0.483 | 0.189 | 0.503 | 0.142 | ||
CEtest | 0.346 | 0.299 | 0.248 | 0.337 | 0.283 | 0.428 | 0.230 | 0.451 | 0.179 | ||
DEtest | 0.297 | 0.356 | 0.295 | 0.286 | 0.359 | 0.384 | 0.300 | 0.409 | 0.236 | ||
rank | rank1 | rank | rank1 | rank | rank1 | rank | rank1 | rank | rank1 | ||
rtrain | 4.54 | 0.00 | 2.44 | 0.00 | 4.30 | 0.00 | 2.72 | 0.00 | 1.00 | 1.00 | |
rtest | 3.61 | 0.06 | 4.21 | 0.04 | 2.82 | 0.07 | 2.65 | 0.22 | |||
RMSEtrain | 4.42 | 0.00 | 2.22 | 0.01 | 4.26 | 0.00 | 3.08 | 0.00 | 1.01 | 0.99 | |
RMSEtest | 3.70 | 0.03 | 4.05 | 0.03 | 2.78 | 0.11 | 2.72 | 0.20 | |||
RRSEtrain | 4.42 | 0.00 | 2.22 | 0.01 | 4.26 | 0.00 | 3.08 | 0.00 | 1.01 | 0.99 | |
RRSEtest | 3.70 | 0.03 | 4.05 | 0.03 | 2.78 | 0.11 | 2.72 | 0.20 | |||
dtrain | 4.05 | 0.00 | 1.99 | 0.11 | 4.34 | 0.00 | 3.49 | 0.00 | 1.13 | 0.89 | |
dtest | 3.09 | 0.03 | 4.02 | 0.03 | 3.15 | 0.04 | 3.44 | 0.05 | |||
REtest | 3.70 | 0.03 | 4.05 | 0.03 | 2.78 | 0.11 | 2.72 | 0.20 | |||
CEtest | 3.70 | 0.03 | 4.05 | 0.03 | 2.78 | 0.11 | 2.72 | 0.20 | |||
DEtest | 3.70 | 0.03 | 4.05 | 0.03 | 2.78 | 0.11 | 2.72 | 0.20 | |||
Overalltrain | 4.36 | 0.00 | 2.22 | 0.03 | 4.29 | 0.00 | 3.09 | 0.00 | 1.04 | 0.97 | |
Overalltest | 3.53 | 0.04 | 4.08 | 0.03 | 2.88 | 0.08 | 2.88 | 0.17 |
Variable | Coefficients | |||
---|---|---|---|---|
QURO-1 | Intercept | 0.496164 | 0.418 | 0.67767 |
T_Jul–Sep | 0.165491 | 2.617 | 0.01196 | |
T_MAR | 0.042491 | 1.437 | 0.15744 | |
T_APR | 0.159552 | 3.474 | 0.00113 | |
T_JUN | 0.064903 | 1.422 | 0.16164 | |
P_JAN–MAR | –0.00598 | –2.294 | 0.02639 | |
0.6304 | 0.5903 | |||
QURO-2 | Intercept | 1.08324 | 1.792 | 0.07914 |
T_Jul–Nov | 0.12812 | 2.570 | 0.01319 | |
T_JAN | 0.03792 | 2.501 | 0.01569 | |
T_APR | 0.08273 | 2.879 | 0.00586 | |
T_ JUN | 0.04669 | 1.800 | 0.07782 | |
0.6241 | 0.5941 |