1. National System of Greenhouse Gas Reporting for Forest and Nature Areas under UNFCCC in The Netherlands Gert-Jan Nabuurs, Isabel van de Wyngaert, Peter Kuikman, Henk Kramer, Wim Daamen JRC 22 sep 05

2. only carbon stock change in living biomass based on one average increment minus harvest one IPCC default for BEF In appendix estimates for N2O and CH4 Dutch reporting of 5a in the past

3. follows carbon cycle aboveground, belowground, dead wood, litter, soil organic carbon Tier 2 for biomass, Tier 1 for forest soils carbon stock change approach consists of a combination of data from ongoing monitoring and/or existing literature data and land use maps For litter and soil organic carbon and for biomass in other nature terrains it is assumed that the stock does not change. New design

4. Approach Forest remaining forest

6. mostly based on Meetnet Functie Vervulling (MFV) (= Dutch forest inventory: 360 kha) 1441 plots in 2001 and 2002 And HOSP: 3100 plots over 1990 - 1999 : 310 kha increment minus harvest minus mortality calculated per plot per year Forest remaining forest

7. biomass stock change: per plot application of biomass expansion functions per species fitted against biomass data from literature comparable approach for belowground Forest remaining forest Scots pine biomass equations

8. distribution of national level statistics in principle possible, but forward calculation is difficult Allocation of harvest

9. In new system : Weak relation between aboveground dynamics and soil dynamics only stock assessment (same goes for agri soils) Soil data from Kuikman et al. 2003 Forest Soils

10. only stock assessment Assumed in equilibrium also after LUC except peat soils large emission: 4 Mt CO2 Side step: Agricultural soils (Peter Kuikman)

11. Results for forest remaining forest Most plots show a sink between 1.9 and 3.2 ton C /ha.y

12. Results for forest : 1990 -2002

13. Other land uses changing to and from forest

14. Derivation of areas from land use change matrix based on topographical maps 1:25,000 for 1990 and 2000 assignment of carbon losses and/or gains from biomass from average carbon content SOM assumed constant !

15. Land use changes: 1990 -2000

16. Changes between cropland and grassland

17. Results Land use change maps (ha/10 y) Row sum = 2000 Column sum = 1990

18. heath, peat, sand dunes Tier 1. simple assumptions based on literature fire: NE: insignificant liming : NE: insignificant CH4: NE: insignificant Other nature terrains

19. (IPCC category 5) GREENHOUSE GAS SOURCE AND SINK CATEGORIES CO2 emissionsCO2 removalsNet CO2 emissions/ removals (Gg) Total Land-Use Change and Forestry8,115.13-5,220.932,894.20 A. Changes in Forest and Other Woody Biomass Stocks 2,110.17-4,615.50-2,505.33 1. Tropical Forests NO 2. Temperate Forests (1)2,110.17 -4,615.50-2,505.33 3. Boreal Forests NO 4. Grasslands/Tundra NO 5. Other NE B. Forest and Grassland Conversion (2)865.64 1. Tropical Forests NO 2. Temperate Forests (Deforestation)865.64 3. Boreal Forests NO 4. Grasslands/TundraNO 5. Other NE C. Abandonment of Managed Lands0.00-21.07 1. Tropical ForestsNO 2. Temperate Forests (Afforestation)NO -21.07 3. Boreal ForestsNO 4. Grasslands/TundraNO 5. Other NE D. CO 2 Emissions and Removals from Soil5139.31-584.364,554,95 1. Cultivation of Mineral SoilsNE 2. Cultivation of Organic Soils4,246.00NO 4,246.00 3. Liming of Agricultural Soils183.15NO 183.15 4. Forest Soils (3) IE 5. Other (due to change in land use) (4)710.16-584.36 125,8 E. Other (6)NE

20. Uncertainty/sensitivity analysis FF

21. Uncertainty/sensitivity analysis

22. Shortcomings/ Future work 1970 – 1990 period ignored Land use change matrix used in future reporting as well until new map is available Kyoto lands and Groenfonds registration Kyoto reporting is now a rather simple extraction of ARD from UNFCCC reporting QA/QC Uncertainty assessment Refinement in soils

23. Projecting ARD Note: this excludes the forest remaining forest