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Table 3 Drivers and their corresponding number of stems and AGC removals in miombo woodlands vegetation subtypes of mainland Tanzania

From: Effects of drivers and their variations on the number of stems and aboveground carbon removals in miombo woodlands of mainland Tanzania

Vegetation types

Drivers

Stems ha−1 yr−

Stems % ha−1 yr−1

AGB tha−1 yr−1

AGC tC ha−1 yr−1

AGC % tC ha−1 yr−1

Closed woodlands (crown cover > 40%)

Natural death

2.070

28.528

0.251

0.123

26.309

Timber

0.847

11.680

0.250

0.122

26.236

Shifting cultivation

0.782

10.782

0.183

0.090

19.174

Unknown

0.384

5.297

0.069

0.034

7.243

Fire

0.642

8.843

0.063

0.031

6.657

Poles

1.041

14.350

0.044

0.022

4.662

Firewood collection

0.675

9.297

0.040

0.020

4.219

Charcoal

0.414

5.707

0.040

0.020

4.192

Grazing wild

0.338

4.658

0.010

0.005

1.091

Carvings

0.027

0.366

0.001

0.001

0.122

Grazing domestic

0.036

0.492

0.001

0.000

0.094

Total

7.255

100

0.953

0.467

100

Open woodlands (Crown cover between 10–40%)

Timber

11.005

51.300

0.262

0.128

20.443

Fire

0.903

4.210

0.246

0.121

19.225

Charcoal

1.454

6.779

0.193

0.095

15.070

Natural death

1.686

7.860

0.167

0.082

13.061

Shifting cultivation

2.448

11.409

0.158

0.078

12.360

Firewood collection

1.550

7.226

0.101

0.049

7.882

Poles

1.538

7.168

0.086

0.042

6.702

Unknown

0.499

2.328

0.042

0.021

3.297

Grazing wild

0.245

1.142

0.017

0.008

1.288

Carvings

0.055

0.258

0.005

0.003

0.419

Grazing domestic

0.061

0.284

0.003

0.002

0.241

Mining

0.008

0.037

0.000

0.000

0.013

Total

21.453

100

1.282

0.628

100

Woodlands with scattered cropland

Shifting cultivation

16.587

58.998

0.735

0.360

47.938

Charcoal

1.751

6.228

0.241

0.118

15.713

Timber

0.382

1.360

0.180

0.088

11.715

Firewood collection

2.032

7.228

0.127

0.062

8.259

Poles

4.994

17.764

0.121

0.059

7.914

Natural death

0.858

3.051

0.073

0.036

4.759

Fire

0.912

3.244

0.039

0.019

2.541

Unknown

0.452

1.606

0.011

0.005

0.700

Pole

0.063

0.225

0.006

0.003

0.383

Carvings

0.083

0.297

0.001

0.001

0.080

Total

28.114

100

1.533

0.751

100

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Carbon Balance and Management

ISSN: 1750-0680

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