Appendix 1: Country brief lay out

Here is an example of the country brief lay out of Indonesia. All the others country briefs are available in the forestry department website.

DESCRIPTION OF THE SOURCE

COUNTRY

Indonesia

REFERENCE YEAR

1996

TITLE

FAO-Government of Indonesia. 1996. Final Forest Resources Statistics. Report of NFI. Directorate General of Forest Inventory and Land use Planning, Ministry of Forestry. Indonesia UTF/INF/066/INS National Forest Inventory. Field Document No. 55. Jakarta, June 1996

TYPE OF SOURCE	Forest inventory	X
	Expert estimate
	General assessment, statistics
	Biomass study

REPORTING LEVEL	National	X	COUNTRY COVERAGE	Complete	XX
	Sub-national			Partial

Vegetation types included	yes/no		Trees species inventoried	yes/no
Natural forests	yes		All species	yes
Plantations	yes		Only commercial species	no
All the forests	yes		Selected species:…………………………………. …………………………………………………… ……………………………………………………
Other wooded land	yes
All wooded land	yes

COMMENTS

The source document is an assessment of the forest resources of Indonesia, part of the World Bank assisted Forestry Institutions and Conservation Project, otherwise known as Forestry I. A field inventory was conducted based on sampling of all forest lands. The inventory provided total of growing stock (intended as total stem volume) of all the tree species, by vegetation types: volume were measured starting from a minimum DBH of 20 cm.

Reliability class

1

1=Forest inventory based on field sampling, or supported by field checking.
2=Forest inventory based mainly on remote sensing.
3=General assessment, statistics, estimation, extrapolation, secondary source.

CALCULATIONS

Volume:

Forest divisions	Area (ha)	Volume (m3/ha)	Tot Vol (m3)
Lowland forests	133,490,000	131.25	17,521,000,000
Mangrove forests	5,060,000	68.97	349,000,000
Swamp forests	31,640,000	93.65	2,963,000,000
(A) Total Area	170,190,000
(B) Total Volume			20,883,000,000
(C) Mean tot Volume (A)/(B)		122.41

(C) Mean tot Volume (m3/ha)	(D) VEF EXP(1.3-0.209*LN(C))	(E) VOB 10 (m3/ha) (C)*(D)	(F) Forest area FRA 2000 (000 ha)	TOT Volume (000 m3) (E)*(F)
122.41	1.34	164.45	104,986	17,265,457

Biomass:

(E) VOB 10 (m3/ha)	(G) WD	(H) BEF EXP(3.213-.506*LN(E*G))	(I) Biomass (t/ha) (H)*(G)*(E)	(L) Forest area FRA 2000 (000 ha)	Tot Biomass (000 t) (L)*(I)
164.45	0.57	2.50	234.16	104,986	24,583,788

COMMENTS AND EXPLANATIONS

The estimated volume VOB 10 is volume over bark of the free bole, from stump or buttress to crown point, excluding branches, with a minimum diameter of 10 cm at breast height or above buttress if this is higher. Estimated biomass is the total amount of live aboveground organic matter present in trees including leaves, twigs, branches, main bole and bark. The procedure adopted for the calculations of the volume and biomass followed strictly what is recommended in the FAO Forestry Paper 134 “Estimating biomass and biomass change of tropical forests” by Sandra Brown. In that paper the volume expansion factor (VEF) is defined as the “ratio of inventoried volume for all trees with a minimum diameter (DBH) of 10 cm and above to inventoried volume for all trees with a minimum diameter of 25-30 cm and above. A VEF has to be applied, in those cases where the inventoried volumes refer to minimum DBH higher than 10 (e.g. 25-30cm) and it has to be multiplied by the inventoried volume in order to obtain the VOB 10 as earlier defined. Biomass expansion factor (BEF) is defined as the ratio of total aboveground oven-dry biomass density of trees with a minimum diameter DBH of 10 cm or more, to the oven-dry biomass density of the inventoried volume. It is multiplied by the inventoried biomass in order to include leaves, twigs, and branches, commonly not measured by the forest inventories. For the case of Indonesia, the inventory used as source document, provided the total growing stock, by vegetation types of all tree species. Since volumes were measured starting from a minimum DBH of 20 cm, a VEF was applied to obtain the VOB 10 as earlier defined. The adjusted mean volume multiplied by the wood density and the BEF (calculated through formula, as recommended by the FAO Forestry Paper 134) allowed us, to obtain the mean biomass per hectare. Finally mean volume and biomass per hectare were multiplied by the extent of forest area (as given by FRA 2000) to calculate total forest volume and biomass. It should be noted that the mean volume per ha given in the national report refers to a larger area of forest and other wooded land. Taking such average and applying it to the forest area estimated by FRA 2000 may lead to certain underestimation of volume and biomass.