FLOODPLAIN FOREST DECID FLOODPLAIN FOREST CONIF FLOODPLAIN FOREST MIX OPEN WATER (FRESH) Organic and Mineral: Kroeger and Crooks (in prep) Open (fresh) Coastal Wetland PHRAGMITES DOMINATED - WETLAND Organic and Mineral: Wetlands Supplement Chapter 4 Phragmites Wetland SALT - HIGH Organic and Mineral: Wetlands Supplement Chapter 4 Saline/brackish Wetland SALT - LOW BARRIER BEACH-BOG BARRIER BEACH-SALT MARSH BARRIER BEACH-DEEP MARSH BARRIER BEACH-MARSH BARRIER BEACH-SHRUB SWAMP Organic and Mineral: Wetlands Supplement Chapter 4 Saline/brackish Forested Wetland BARRIER BEACH-WOODED SWAMP DECIDUOUS BARRIER SWAMP CONIFEROUS BARRIER BEACH-WOODED SWAMP MIXED TREES TIDAL FLAT NA No guidance- Assumed that no emissions or reductions are associated with land cover types COASTAL BEACH COASTAL DUNE BARRIER BEACH SYSTEM ROCKY INTERTIDAL SHORE COASTAL BANK BLUFF OR SEA CLIFF BARRIER BEACH-COASTAL BEACH BARRIER BEACH-COASTAL DUNE OPEN WATER (SALT) Organic and Mineral: Kroeger and Crooks (in prep) Open water (salt) BARRIER WATER Upland FORESTED UPLAND DECIDUOUS NA FORESTED UPLAND CONIFEROUS
13 Look-up Table for Soil Emissions Factors of CO2-C and CH4-C Location Soil Type Land Use Category Wetlands Destruction Wetlands Restoration Extraction Drained Rewetting Wetlands Remaining Wetlands Soil C tons C/ha EF tons DOC- C/ha/yr EF tons C/ha/yr EF tons EF tons DOC- C/ha/yr EF tons EF tons EF tons EF tons Inland Wetland Organic Freshwater Wetland 0.31 0.24 -0.23B,C 0.5C,D 0.092B 0.216D 0 0.092 Freshwaster Forested Wetland 0.31 0.24 -0.23B,C 0.5C,D 0.092B 0.216D 0 0.092 Open water fresh 0 0.092B 0.216D 0 0.092 Mineral Freshwater Wetland 128 6.4 0 0.177 0 0 Freshwater Forested Wetland 128 6.4 0 0.177 0 0 Open water fresh 0 0 0.177 0 0 Coastal Wetland Organic Phragmites Wetland 340 7.9 0 -0.91 0.146 -0.91 0.146 Saltwater/brackish Wetland 340 7.9 0 -0.91 0 -0.91 0 Salt water/brackish Forested Wetland 340 7.9 0 -0.91 0 -0.91 0 Open water salt 0 0 0 0 0 Mineral Phragmites Wetland 226 7.9 0 -0.91 0.146 -0.91 0.416 Saltwater/brackish Wetland 226 7.9 0 -0.91 0 -0.91 0 Freshwater Tidal Forested Wetland 226 7.9 0 -0.91 0 -0.91 0.416 Open water salt 0 0 0 0 0
L=Land use class AL=Area within a land use after rewetting = Rewetting emissions factor for dissolved organic carbon for a specific land use class =Rewetting emissions factor for CO2-C from soil for a specific land use class = Rewetting emissions factor for CH4-C from soil for a specific land use class Values for AL are entered on the “Data tab”. Values for , , and are from the “Rewetting” columns in Table 13 and are referenced in the calculator from the “Lookup Table” tab. The calculator assumes CO2 and CH4 emissions from all types of rewetted wetlands continue accumulating linearly for 50 years following rewetting. Wetlands remaining wetlands Calculations - Where L=Land use class APre,L=Area of within a land use class prior to conversion APost,L=Area of land within a land use class after conversion = Wetlands Remaining Wetlands emissions factor for dissolved organic carbon for a specific land use class = Wetlands Remaining Wetlands emissions factor for CO2-C from soil for a specific land use class = Wetlands Remaining Wetlands emissions factor for CH4-C from soil for a specific land use class Values for AL are entered on the “Data Entry tab”. Values for , , and are from the “Wetlands Remaining Wetlands ” columns in Table 13 and are referenced in the calculator from the “Lookup Table” tab. The calculator assumes CO2 and CH4 emissions from all types of converted wetlands continue accumulating linearly for 50 years following the project. Resulting Emissions and Unit Conversions Annual differences in emissions/removals relative to pre-management conditions resulting from each management activity are on each “Calculator” tab. Cumulative change in emissions for each activity are given for 1, 10, 20, 30, 40 and 50 years following the activity on the “Results Summary” tab in the pink, lime green, purple and orange rows. Total cumulative emissions, summed across all activities are shown in the bright green and blue rows on the same worksheet and also shown in graphs. It is important to remember that these emissions or removals are relative to emissions or removals prior to the management. Therefore, negative emissions resulting from these calculations may mean a decrease in emissions compared to prior conditions, not necessarily sequestration. This is better shown with examples