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

• 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

• 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

Approach

Forest remaining forest

Forest remaining forest

• 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

• 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

• distribution of national level statistics in principle possible, but forward calculation is difficult

Allocation of harvest

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

• only stock assessment•Assumed in equilibrium• also after LUC •except peat soils• large emission: 4 Mt CO2

Side step: Agricultural soils (Peter Kuikman)

Results for forest remaining forest

• Most plots show a sink between 1.9 and 3.2 ton C /ha.y

Results for forest : 1990 -2002

-5,000,000

-4,000,000

-3,000,000

-2,000,000

-1,000,000

0

1,000,000

2,000,000

3,000,000

1989 1991 1993 1995 1997 1999 2001 2003

Sin

k o

r so

urc

e (t

on

ne

CO

2)

LiveTrees(excl harvest-effect) ton CO2 eq. DeadWood ton CO2 eq. TotalHarvest ton CO2 eq.

Net total system carbon exchange ton CO2 eq. deforestation afforestation

Soil C changes due to LUC N2O from forest soils Trees outside forest, orchards etc.

Other land uses changing to and from forest

• 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 !

Land use changes: 1990 -2000

Changes between cropland and grassland

Results Land use change maps (ha/10 y)

2000 gras akker heide/hoogveenbos bebouwd/wegenwater moeras zand overig bebouwdklein bosgras 1181537 162837 858 12454 50749 12680 2057 1413 15680 9643akker 215986 760431 122 2008 16923 2614 51 16 5190 2798heide 866 664 42636 2689 290 394 20 647 138 368bos 14463 11293 5770 338075 8155 1759 103 835 3218 2588bebouwd 8261 3092 21 577 98101 709 6 30 14188 720water 7986 2595 600 836 2891 754945 523 2507 1414 608zand 763 153 337 705 252 2147 18 32866 228 259overig bebouwd60014 12020 196 5652 80308 3621 74 494 155782 4928klein bos 6 5 1 2 1 0 0 0 1 12

Row sum = 2000

Column sum = 1990

• heath, peat, sand dunes• Tier 1. • simple assumptions based on literature

• fire: NE: insignificant• liming : NE: insignificant • CH4: NE: insignificant

Other nature terrains

(IPCC category 5)

GREENHOUSE GAS SOURCE AND SINK CATEGORIES

CO2 emissions CO2 removals Net CO2 emissions/ removals

  (Gg)

Total Land-Use Change and Forestry 8,115.13 -5,220.93 2,894.20

A. Changes in Forest and Other Woody Biomass Stocks

2,110.17 -4,615.50 -2,505.33

1. Tropical Forests NO  NO  NO

2. Temperate Forests (1) 2,110.17  -4,615.50 -2,505.33

3. Boreal Forests   NO  NO  NO

4. Grasslands/Tundra   NO  NO  NO

5. Other NE NE

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/Tundra NO     

5. Other NE    

C. Abandonment of Managed Lands 0.00 -21.07 -21.07

1. Tropical Forests NO  NO  NO

2. Temperate Forests (Afforestation) NO  -21.07  -21.07

3. Boreal Forests NO  NO  NO

4. Grasslands/Tundra NO  NO  NO

5. Other NE

NE

NE

D. CO2 Emissions and Removals from Soil 5139.31 -584.36 4,554,95

1. Cultivation of Mineral Soils NE  NE  NE

2. Cultivation of Organic Soils 4,246.00 NO  4,246.00

3. Liming of Agricultural Soils 183.15 NO  183.15

4. Forest Soils (3)  IE IE  IE

5. Other (due to change in land use) (4) 710.16 -584.36 125,8

E. Other (6) NE NE NE

Uncertainty/sensitivity analysis FF

Uncertainty/sensitivity analysis

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

Projecting ARD

Note: this excludes the forest remaining forest