(11 to 28 September, 2006)

1
Excursion for understanding different sites in
Siberia

• (11 to 28 September, 2006)

2
Sites
Igarka (N 6729.9, E 8625.26)Lower Yenisei
(Germany)
Tura (N 6412, E 10027) Middle Yenisei (Japan)
Tura
Yakutsk (N 6219, E 12931) Middle Lena (Japan)
3
Igarka, Tura, Yakutsk
East Siberia Yakutsk many large thermokarsts
Central Siberia Tura and Igarka no thermokarst
4
Why are many thermokarsts in east Siberia?
Effect of forest fire on thermokarst formation?
5
Burnt area in 2002 fire in RussiaInternational
Forest Fire News (IFFN) No. 28 (2003)
Strong impact of forest fire in east Siberia
6
Long term thermokarst formation (Yakutsk) Photo
by R. Desyatkin
Formation beginning between 10 and several
hundred years
Formation of wetland
between 300 to 600-700 years
Formation of wetland
Duede
Between 1-1.5 to 2-3 thousand years
Tuumpu
Formation of lake
Between 7-8 to 10-16 (old alas) thousand years
Formation of grassland
Alas
7
Regeneration of forest after fire
Generation of Birch forest
?
Life span of Birch is 50 to 80 years
Generation of Larch forest
8
Group Photo in Yakutsk
9
Larch, Yakutsk
10
Alas, Yakutsk
11
Polygon, Yakutsk
12
Mix of Spruce, Larch and Birch (Igarka)
13
Thermokarst in Bogs (Igarka)
14
Permafrost (Igarka)