334
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Made in
Yokohama
Made
outside the
city
Made in
Yokohama
Made
outside the
city
Made in
Yokohama
Made
outside the
city
Made in
Yokohama
Made
outside the
city
Average
R aw seaweed
Salted seaweed
D ried seaweed
Planting 㹼 Harvesting
Boiling
Draining
Cooling
Salting
Dewatering
Drying
Packaging
Transportation
CO
2 emissions per unit (ton-CO
2 /ton-wet)
Excluded
from
calculations
(Boiling)
Made in Yokohama: 2%
Made outside the city: 11%
(Planting 䡚 Harvesting)
Made in Yokohama: 97%
Made outside the city: 87%
Fig. 12.4 Estimated CO 2 emissions from edible seaweed production based on life cycle
assessment
China
Shikoku
Tohoku
Yokohama
Baseline
Project
Korea
Seaweed consumption in Yokohama City (kg)
1200
1000
800
600
400
200
0
Fig. 12.5 Schematic diagram of change in the consumption of edible seaweed (brown kelp,
Undaria pinnatifida) in Yokohama City before and after the Yokohama Blue Carbon Project
M. Nobutoki et al.