Blue Carbon Financing of Mangrove Conservation in the Abidjan Convention Region: A Feasibility Study

Benin

1,800

Mangrove area – year 0

317.10

C density top m of soil (Mg/ha)

95.40

C density of above + below ground biomass (Mg/ha)

$460

Above ground land value (US$/ha)

Years (end of)

Present value

1

2

3

20

1,787

1,775

1,762

1,564

Area of Blue Carbon (ha)

13

12

12

11

Area lost (ha) @0.7%/yr

3,995

3,940

3,912

3,472

Soil carbon exposed (Mg)

200

397

592

3,716

Soil carbon cumulative loss (Mg)

1,202

1,185

1,177

1,044

Biomass carbon lost (Mg)

1,402

1,582

1,769

4,760

Total C emitted (Mg)

1,426

1,605

1,793

4,781

Carbon benefit of conservation (Mg)

$391,274

$4,277

$4,816

$5,378

$14,342

C value at US$ 3/tCO 2 e, 5%

$652,123

$7,128

$8,027

$8,963

$23,904

C value at US$ 5/tCO 2 e, 5%

$291,609

$4,277

$4,816

$5,378

$14,342

C value at US$ 3/tCO 2 e, 8%

$486,015

$7,128

$8,027

$8,963

$23,904

C value at US$ 5/tCO 2 e, 8%

$5,028

$328

$336

$346

$508

Cost to conserve ($25/ha estab., US$ 1/yr), 5%

$43,612

$3,011

$3,057

$3,124

$4,180

Cost to conserve ($232/ha estab., US$ 7/yr), 5%

$3,879

$328

$336

$346

$508

Cost to conserve ($25/ha estab., US$ 1/yr), 8%

$33,827

$3,011

$3,057

$3,124

$4,180

Cost to conserve ($232/ha estab., US$ 7/yr), 8%

$613,630

$5,791

$11,501

$17,171

$107,708

Opportunity cost, 5%

$437,574

$5,791

$11,501

$17,171

$107,708

Opportunity cost, 8%

High carbon price

Low carbon price

Net Benefit of Conservation (million US$)

8%

8%

5%

5%

$0.0

($0.1)

$0.0

($0.2)

Low cost of conservation

$0.0

($0.2)

($0.0)

($0.3)

High cost of conservation

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