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5. BIOMASS DENSITY ESTIMATES FOR DEVELOPING COUNTIES BASED ON EXISTING INVENTORIES


5.1 TROPICAL AFRICAN COUNTRIES
5.2 TROPICAL AMERICAN COUNTRIES
5.3 TROPICAL ASIAN COUNTRIES

The following tables for the three main tropical regions include examples of biomass estimates for different forest types estimated from forest inventories and the methods described above. All biomass estimates are based on trees to a minimum dbh of 10 cm and represent average values over the inventory area, which in some countries is the total forest area (indicated by the word "National" in parenthesis in the following tables).

5.1 TROPICAL AFRICAN COUNTRIES

Country

Forest type

General climate

Aboveground biomass (t/ha)

Benin

Closed forest

Dry

175

Tree savanna

Dry

96

Burkina Faso (National)

Degraded tree savanna

Dry - long dry season

20

Cameroon

Primary

Moist

310

Gambia (National)

Gallery forest

Moist - dry season

140

Closed woodland

Dry

97

Open woodland

Dry

50

Tree savanna

Dry

28

Ghana

Closed forest

Moist-short dry season

395

Guinea (National)

Mixed: closed, open, secondary

Moist

135

Mozambique

Dense forest

Moist - short dry season

120

Dense forest

Moist - dry season

130

Dense forest

Dry - long dry season

70

Inventory sources in order by country are: Marsch 1976, FAO 1983, Centre Technique Forestier Tropical 1969, Forster 1983, Alder 1982, ATLANTA Consult, n.d., FAO 1981.

5.2 TROPICAL AMERICAN COUNTRIES

Country

Forest type

General climate

Aboveground biomass (t/ha);

Bolivia

Closed forest

Moist

230

Brazil

Closed forest

Moist

315

Ecuador

Closed forest

Moist

182

French Guyana

Closed forest

Moist

309

Riparian forest

Moist

275

Savanna forest

Moist

205

Guatemala (Peten area)

Closed forest

Moist

242

Guyana (1)

Closed forest

Moist

254

Logged forest

Moist

190

Wallaba forest

Dry

145

Guyana (2)

Mixed forest

Moist

275

Low mixed forest

Moist

192

Liana forest

Moist

125

Wallaba forest

Moist

148

Wallaba forest on white sands

Moist

405

Nicaragua (1)

Orifino forest

Moist

240

Lowland mixed

Moist

235

Nicaragua (2)

Mature forest

Moist

240

Secondary

Moist

183

Panama

High density-mixed

Moist

239-366

Low density-mixed

Moist

169-245

Campnosperma forest high density

Moist

860

Campnosperma forest low density

Moist

470

High density-mixed

Wet

194-214

Low density-mixed

Wet

120-125

High density-mixed

Pre- & Lower montane rain

186-252

Low density-mixed

Pre- & Lower montane rain

118-143

Peru

Primary

Moist

210

Lightly logged

Moist

192

Heavily logged

Moist

125

Late secondary

Moist

140

Young secondary

Moist

20

Flooded secondary

Moist

195

Low forest

Moist

155

Surinam

Upland forest

Moist

255

Small crown-upland

Moist

136

Savanna forest

Moist

195

Riparian forest

Moist

217

Liana forest

Moist

120

Wallaba forest

Moist

250

Venezuela

Semi-deciduous

Dry

78

Inventory sources In order by country are: Sachtler 1979, FAO 1978, FAO 1971 a, Centre Technique Forestier Tropical 1975, FAO 1970a, Rees, 1963, FAO 1970b, FAO 1969, FAO/UNDP 1972, FAO 1972, Jankovic 1969, de Milde and Inglis 1974a,b, FAO 1971b

5.3 TROPICAL ASIAN COUNTRIES

Country

Forest type

General climate

Aboveground biomass (t/ha)

Bangladesh (1)

Closed - large crowns

Moist

210

Closed - small crowns

Moist

150

Disturbed closed

Moist

190

Disturbed open

Moist

85

Bangladesh (2)

Closed - large crowns

Moist

206

Closed - small crowns

Moist

162

Cambodia (1)

Dense

Moist

295

Semi-dense

Moist

370

Secondary

Moist

190

Open

Moist

160

Open

Dry

70

Cambodia (2)

Well to poorly stocked evergreen

Moist

100-155

Deciduous

Moist

120

India

High to low volume closed

Dry

44-81

Forest fallow

Dry

16

Malaysia-Peninsular (National)

Superior to moderate hill

Moist

245-310

Poor hill

Moist


Upper hill

Moist

275

Disturbed hill

Moist

200

Logged hill

Moist

180

Forest fallow

Moist

140

Freshwater swamp

Moist

220

Disturbed freshwater swamp

Moist

285

Logged freshwater swamp

Moist

185

Malaysia - Sarawak

Mixed dipterocarps-dense stocking, flat to undulating

Moist

325-385

terrain



Mixed dipterocarps-dense stocking, mountainous

Moist

330-405

Mixed dipterocarps-medium stocking, flat to mountainous

Moist

280-330

Myanmar

Evergreen

?

60-200

Mixed deciduous

?

45-135

Indaing forest

?

10-65

Philippines

Old-growth dipterocarp

Moist

370-520

Logged dipterocarp

Moist

300-370

Sri Lanka

Evergreen-high yield

Moist

435-530

Evergreen-medium yield

Moist

365-470

Evergreen-low yield

Moist

190-400

Evergreen-logged

Moist

255

Secondary

Moist

280

Inventory sources in order by country are: de Milde et al. 1985, Drigo et al. 1988, Rollet 1962, FAO 1971c, Government of India 1972, Government of Malaysia 1987, FAO 1973, FAO 1984-1985, Philippine-German Forest Resources Inventory Project, 1986-1988, FAO/UNDP 1969, Royal Forest Department of Thailand 1980.


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