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

Congo

1,500

Mangrove area – year 0

321.40

C density top m of soil (Mg/ha)

71.80

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

$38

Above ground land value (US$/ha)

Years (end of)

Present value

1

2

3

20

1,490

1,479

1,469

1,303

Area of Blue Carbon (ha)

11

10

10

9

Area lost (ha) @0.7%/yr

3,375

3,327

3,304

2,932

Soil carbon exposed (Mg)

169

335

500

3,138

Soil carbon cumulative loss (Mg)

754

743

738

655

Biomass carbon lost (Mg)

923

1,078

1,238

3,793

Total C emitted (Mg)

942

1,098

1,258

3,811

Carbon benefit of conservation (Mg)

$296,714

$2,827

$3,294

$3,774

$11,432

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

$494,524

$4,712

$5,490

$6,289

$19,053

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

$219,534

$2,827

$3,294

$3,774

$11,432

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

$365,891

$4,712

$5,490

$6,289

$19,053

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

$4,190

$273

$280

$288

$423

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

$36,343

$2,510

$2,548

$2,603

$3,484

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

$3,233

$273

$280

$288

$423

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

$28,189

$2,510

$2,548

$2,603

$3,484

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

$41,723

$394

$782

$1,168

$7,323

Opportunity cost, 5%

$29,752

$394

$782

$1,168

$7,323

Opportunity cost, 8%

High carbon price

Low carbon price

Net Benefit of Conservation (million US$)

8%

8%

5%

5%

$0.3

$0.2

$0.4

$0.3

Low cost of conservation

$0.3

$0.2

$0.4

$0.2

High cost of conservation

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