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Biology Articles » Bioclimatology » Impact of climate change on radial growth of Siberian spruce and Scots pine in North-western Russia » Tables

Tables
- Impact of climate change on radial growth of Siberian spruce and Scots pine in North-western Russia

Tab. 1 - Climatic characteristics in different taiga sub zones in Komi ([10]).

Sub zone of taiga boreal forest Vegetation period, days Precipitation, mm Annual
evapotranspiration, mm
May -
October
October - April
Northern forest - tundra transition zone 117 235 190 125
Northern taiga 143 290 190 175
Middle taiga 158 330 260 200-250
South taiga 177 370 250 300

Tab. 2 - Tree ring data collected in Komi Republic in 2003-2005. (§) The Scots pine trees not found in forest-tundra transition zone.

Site Forest zone Location
coordinates
Siberian spruce Scots pine Distance to
meteo-
station,
km
Meteo-station,
analysed period
n trees Time Span Min-Max Mean n trees Time Span Min-Max Mean
1 Forest - tundra transition zone(§) 66°41’260” N
56°49’142” E
16 1812
2005
71-192
115.6
- - - 125 Khoseda - Khard,
1933-1995
2 Northern taiga zone 65°59’697” N
57°48’820” E
16 1878
2005
37-126
75.3
20 1924
2005
52-80
69.3
42 Ust-Usa,
1936-2003
3 Middle taiga zone (west) 61°44’834” N
50°34’910” E
40 1779
2005
38-225
104.3
45 1786
2005
34-218
93.6
30 Syktyvkar,
1896-2004
4 Middle taiga zone (east) 63°25’294” N
57°57’597” E
51 1826
2005
27-176
91.3
21 1842
2005
142-163
152
130 Troitsko-Pechersk,
1893-2004
5 South taiga zone 60°33’615” N
49°26’945” E
30 1917
2005
18-89
52.8
22 1877
2005
28-127
73
38 Objachevo,
1944-2004
Total: 153 - - 108 - - Mean
73
-

Tab. 3 - Expressed population signal of chronologies for the period 1954 - 2003.

Site Forest
zone
Siberian
spruce
Scots
pine
1 Forest - tundra transition zone 0.41 -
2 Northern limit of the Northern taiga zone 0.63 0.71
3 Middle taiga zone (east) 0.85 0.85
4 Middle taiga zone (west) 0.86 0.85
5 South taiga zone 0.85 0.61

Tab. 4 - Amount of variance (R2) explained by temperature (T) and precipitations (P) for the period 1954-2003.

Site Forest zone Siberian spruce Scots pine
P T P and T P T P and T
3 Middle taiga zone (east) 0.416 0.390 0.641 0.446 0.484 0.646
4 Middle taiga zone (west) 0.402 0.413 0.652 0.220 0.386 0.702
5 South taiga zone 0.220 0.264 0.435 - - -

Tab. 5 - Temporal stability of the amount of variance (R2) explained by temperature and precipitations for 2 subsequent 25-years periods.

Forest
zone
Time
span
Siberian
spruce
Scots
pine
Middle taiga zone (east) 1954-1978 0.649 0.574
1979-2003 0.727 0.388
Middle taiga zone (west) 1954-1978 0.309 0.228
1979-2003 0.292 0.370
South taiga zone 1954-1978 0.639 -
1979-2003 0.420 -


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