Transcript “Subalpine tree-ring chronologies from Bulgaria – the database of the University of Forestry" M.

“Subalpine tree-ring chronologies
from Bulgaria – the database of the
University of Forestry"
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
WSL Institute for Snow and
Avalanche Research SLF
Momchil Panayotov, PhD
University of Forestry, Sofia,
Dendrology Department
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
Topics:
•Forest dynamic studies in Picea abies
forests in Rila Mts.
•Picea abies tree-ring chronologies
•“Old and tough” - Pinus peuce and Pinus
heldreichii (P. leucodermis) tree ring
chronologies
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
Sofia
Vitosha
Rila
Velingrad
Pirin
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
SLF project (Velux foundation) “Natural dynamics of
subalpine avalanche protection forests”
•Would the protection forests in the Alps maintain their
protection functions if they are not managed?
•>Natural dynamics in Pristine Picea abies forests –
what is the influence of disturbances, scale, etc…
•> A Bulgarian example – Parangalitsa Forest
Reserve in Rila Mts.
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
SLF project (Velux foundation) “Natural dynamics of
subalpine avalanche protection forests”
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
35
1.4
1.3
30
1.2
1.1
1
20
0.9
15
0.8
0.7
10
0.6
number of samples
5
STD chronology, 67% spline
0
1855
0.5
0.4
1875
1895
1915
1935
1955
1975
1995
Indices
Sample depth
25
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
Expected in terms of “tree-ring
chronologies”:
•Picea abies tree-ring chronology from “Optimum
growth conditions”
•Picea abies tree-ring chronology from “Subalpine
zone”
•Abies alba tree-ring chronology from “Optimum
growth conditions”
•Pinus sylvestris chronology?
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
Picea abies from Vitosha – disturbances and tree
ring chronology
1966 aero-photo image
1997 aero-photo image
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
Picea abies from Vitosha – disturbances and tree
ring chronology
1.8
70
80%
1.6
1.6
% negative Cropper values (<-750)
60% 50
Sample depth
Cropper values & Index, 20-year splined
60
1.4
% Positive Cropper values (>750)
1.2 1.4
Index_STD-20yrSpline
40
1
30
0.8
20%
0%
Indices
40%
1.2
1
0.6
-20% 20
0.4
-40%
number of samples
10
-60%
STD chron., 67% spline
0.2 0.6
0
0
-80%
1908
1898 1909
1888 1899
1878 1889
1868 1879
18581869
1859
0.8
1998 1999
19881989
1918
1919 1928
1929 1938
1939 1948
1949 1958
1959 1968
19691978
1979
Year
Year
Panayotov, M., Popa, I., Dimitrov, D., Tsavkov, E. and Yurukov, S., Pointer years in Picea abies and Fagus
sylvatica tree-ring chronologies from Bulgaria and Romania. TRACE 2009. In Preparation
0.4
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
Pinus peuce (Macedonian pine) in Pirin mountains
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
The old forests - Pinus peuce (Macedonian pine) and
Pinus heldreichii (=P.leucodermis) (Bosnian pine) in Pirin
Todorka peak, Pirin Mts. NW Slope
2200-2250 m a.s.l.
~ 2000 m a.s.l.
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
Pinus peuce (Macedonian pine) in Pirin mountains
•Vakarelov I, Mirtchev S, Kachaunova E, Simeonova N (2001) Reconstruction of summer air
temperatures by dendrochronological analysis of Macedonian pine (Pinus peuce Griseb.) in
Pirin mountains (South-eastern Bulgaria). Forestry Ideas 1-4:16-26
•Panayotov MP, Yurukov S (2007) Tree ring chronology from Pinus peuce in Pirin Mts and the
possibilities to use it for climate analysis. Phytologia Balcanica, 13(3): 313-320
Pinus peuce, Pirin, STD chron.
1.4
1.3
1.2
1.1
1
0.9
0.4 0.8
1702
1727
1752
1777
-0.2
Correlation
coefficient
Correlation
coefficient
0.2
0.6
1677
0
0.4
temperatures
0.7
precipitation
0.2
1802
0
1827
1852
1877
1902
-0.2
-0.4
-0.4
M J J A SO N D J F MA M J J A SO
Month
M J J A SO N D J F MA M J J A SO
Month
1927
1952
1977
2002
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
Pinus heldreichii (=P.leucodermis) (Bosnian pine) in Pirin
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
Pinus heldreichii (=P.leucodermis) (Bosnian pine) in Pirin
Vihren peak, 2917 m a.s.l. Pirin Mts. E slope
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
Pinus heldreichii (=P.leucodermis) (Bosnian pine) in Pirin
Pinus heldreichii chronology, Pirin, STD; ver. 271108
1.4
1.3
1.2
1.1
1
0.9
0.8
0.6
0.21250
Tem perature
1300
1350
1400
0
-0.2
-0.4
1450
1500
0.4
Correlation coefficient
Correlation coefficient
0.7
0.4
1550 0.21600
Precipitation
1650
1700
1750
1800
1850
1900
2000
0
80
Number of P. heldreichii cores
60
Number of P. peuce cores
-0.2
40
20
0
-0.4
1250
1300
1350
1400
1450
1500
M J 1550
J A S1600
O N 1650
D J F1700
M A 1750
M J J1800
A S 1850
O
M J J A S O N D J F M A M J J A S O
Month
1950
1900
1950
Month
Panayotov, M., Bebi, P., Trouet, V. and Yurukov, S., Climate signal in tree-ring chronologies of Pinus peuce
and Pinus heldreichii from the Pirin Mountains in Bulgaria. Submitted to TREES - Structure and Function
2000
M. Panayotov - "Subalpine tree-ring chronologies from Bulgaria… "
Thanks for the attention
more and updates:
http://dendrochronologybg.net