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(baseline scenario); and C in 2039 with rewetting (project scenario; the distribution of hollows, hummocks and very moist bog heath is spatially not explicit). The black and white maps at the right hand side show associated tree stand densities Fig. 7 Current and projected vegetation distribution of Ost- rovskoe. A In 2009 (‘bare peat with Polytrichum’ is located at the southern margin of the peatland and bears the same symbol as ‘bare peat with Calluna’); B in 2039 without rewetting

Figure 7 (baseline scenario); and C in 2039 with rewetting (project scenario; the distribution of hollows, hummocks and very moist bog heath is spatially not explicit). The black and white maps at the right hand side show associated tree stand densities Fig. 7 Current and projected vegetation distribution of Ost- rovskoe. A In 2009 (‘bare peat with Polytrichum’ is located at the southern margin of the peatland and bears the same symbol as ‘bare peat with Calluna’); B in 2039 without rewetting

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Fig. 3. Annual methane emissions (kg CH, ha! year‘) from peat soils in relation to the mean annual water level. Data source as in Fig. 2; only data from sites with mean annual water level >—20 cm are included. The linear regression Ly = 16.7 x & + 20); n = 24; r= 0.76, P< 0.01] applies to the filled black dots, representing sites with aerenchymous shunt species. Open dots denote sites with open vegetation without shunt species; crosses denote treed sites
Fig. 3. Annual methane emissions (kg CH, ha! year‘) from peat soils in relation to the mean annual water level. Data source as in Fig. 2; only data from sites with mean annual water level >—20 cm are included. The linear regression Ly = 16.7 x & + 20); n = 24; r= 0.76, P< 0.01] applies to the filled black dots, representing sites with aerenchymous shunt species. Open dots denote sites with open vegetation without shunt species; crosses denote treed sites
Fig. 4 Annual methane emissions (kg CH4 haw! year ') from peat soils in relation to the density of aerenchymous leaves of Eriophorum vaginatum and Scheuchzeria palustris (n m-”) with a linear regression [y = 0.24 x x; n = 29; r = 0.91, P <0.01]. Mean annual water level is above —20 cm at all measurement sites. Modified from Drésler (2005)
Fig. 4 Annual methane emissions (kg CH4 haw! year ') from peat soils in relation to the density of aerenchymous leaves of Eriophorum vaginatum and Scheuchzeria palustris (n m-”) with a linear regression [y = 0.24 x x; n = 29; r = 0.91, P <0.01]. Mean annual water level is above —20 cm at all measurement sites. Modified from Drésler (2005)
Fig. 5 Net annual CO, fluxes (x 1,000 kg CO, ha! year” ') from peat soils in relation to the mean annual water level. Open dots denote one flooded site and the lysimeter experiments of Mundel (1976). Grey dots denote flux estimates based on long term subsidence measurements (van de Akker et al., 2008; Verhagen et al., 2009). The linear regression [y = — 752 x x — 4750; n = 35; °° = 0.71, P< 0.01] applies to the filled black dots, representing NEP measurements corrected for harvest export. Data collated from Augustin (unpubl.), Bortoluzzi et al. (2006), Drdsler (2005), Flessa et al. (1998), Jacobs et al. (2003), Meyer (1999), Miiller et al. (1997), Mundel (1976), Nieveen et al. (1998), Veenendaal et al. (2007)
Fig. 5 Net annual CO, fluxes (x 1,000 kg CO, ha! year” ') from peat soils in relation to the mean annual water level. Open dots denote one flooded site and the lysimeter experiments of Mundel (1976). Grey dots denote flux estimates based on long term subsidence measurements (van de Akker et al., 2008; Verhagen et al., 2009). The linear regression [y = — 752 x x — 4750; n = 35; °° = 0.71, P< 0.01] applies to the filled black dots, representing NEP measurements corrected for harvest export. Data collated from Augustin (unpubl.), Bortoluzzi et al. (2006), Drdsler (2005), Flessa et al. (1998), Jacobs et al. (2003), Meyer (1999), Miiller et al. (1997), Mundel (1976), Nieveen et al. (1998), Veenendaal et al. (2007)
Fig. 6 Annual nitrous oxide fluxes (kg NO ha! year~') from peat soils in relation to the mean annual water level. Filled black dots denote bog sites, filled grey dots fen sites without fertilizer application, open dots fen sites with fertilizer application; crosses denote treed sites. Data collated from Augustin (unpubl), Augustin & Merbach (1998), Augustin et al. (1998), Brumme et al. (1999), Drdsler (2005), Flessa et al. (1998), Hendriks et al. (2007), Jacobs et al. (2003), Meyer (1999), Miiller (1999), Tauchnitz et al. (2008), Velthof et al. (1996), Von Arnold (2004), Wild et al. (2001)
Fig. 6 Annual nitrous oxide fluxes (kg NO ha! year~') from peat soils in relation to the mean annual water level. Filled black dots denote bog sites, filled grey dots fen sites without fertilizer application, open dots fen sites with fertilizer application; crosses denote treed sites. Data collated from Augustin (unpubl), Augustin & Merbach (1998), Augustin et al. (1998), Brumme et al. (1999), Drdsler (2005), Flessa et al. (1998), Hendriks et al. (2007), Jacobs et al. (2003), Meyer (1999), Miiller (1999), Tauchnitz et al. (2008), Velthof et al. (1996), Von Arnold (2004), Wild et al. (2001)
Vegetation type CO, emissions (t CO>-eq. ha”! year!) CH, emissions (t CO>-eq. ha! year ') GWP estimate Remarks (t CO>- eq. ha~! year~!)
Vegetation type CO, emissions (t CO>-eq. ha”! year!) CH, emissions (t CO>-eq. ha! year ') GWP estimate Remarks (t CO>- eq. ha~! year~!)
Table 2 GHG fluxes from Ostrovskoe in the current (2009) situation and in the baseline and project scenarios for 2039 See Table | for references on emission factors and Fig. 7 for spatial distribution of vegetation types. Emission factors of site types with substantial cover of bare peat were taken to be proportional to the areal extent of the constituting components
Table 2 GHG fluxes from Ostrovskoe in the current (2009) situation and in the baseline and project scenarios for 2039 See Table | for references on emission factors and Fig. 7 for spatial distribution of vegetation types. Emission factors of site types with substantial cover of bare peat were taken to be proportional to the areal extent of the constituting components
See Table | for references on emission factors and Fig. 8 for spatial distribution of vegetation types suffers from considerable disadvantages (Joosten & Couwenberg, 2009): suffers from considerable disadvantages (Joosten & Couwenberg, 2009): diaspores of wet mire species are amply available
See Table | for references on emission factors and Fig. 8 for spatial distribution of vegetation types suffers from considerable disadvantages (Joosten & Couwenberg, 2009): suffers from considerable disadvantages (Joosten & Couwenberg, 2009): diaspores of wet mire species are amply available
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Earth SciencesForest InventoryPeat Soil
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