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

Angola

15,400

Mangrove area – year 0

354.40

C density top m of soil (Mg/ha)

70.60

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

15,292

15,184

15,078

13,381

Area of Blue Carbon (ha)

108

106

106

94

Area lost (ha) @0.7%/yr

38,204

37,669

37,406

33,195

Soil carbon exposed (Mg)

1,910

3,794

5,664

35,529

Soil carbon cumulative loss (Mg)

7,611

7,504

7,452

6,613

Biomass carbon lost (Mg)

9,521

11,298

13,116

42,141

Total C emitted (Mg)

9,725

11,499

13,315

42,319

Carbon benefit of conservation (Mg)

$3,237,087

$29,174

$34,496

$39,945

$126,956

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

$5,395,144

$48,623

$57,494

$66,575

$211,593

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

$2,388,628

$29,174

$34,496

$39,945

$126,956

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

$3,981,047

$48,623

$57,494

$66,575

$211,593

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

$43,014

$2,803

$2,871

$2,958

$4,347

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

$373,121

$25,764

$26,158

$26,724

$35,766

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

$33,188

$2,803

$2,871

$2,958

$4,347

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

$289,408

$25,764

$26,158

$26,724

$35,766

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

$428,357

$4,042

$8,028

$11,986

$75,188

Opportunity cost, 5%

$305,458

$4,042

$8,028

$11,986

$75,188

Opportunity cost, 8%

High carbon price

Low carbon price

Net Benefit of Conservation (million US$)

8%

8%

5%

5%

$3.6

$2.0

$4.9

$2.8

Low cost of conservation

$3.4

$1.8

$4.6

$2.4

High cost of conservation

60