This is great, Mangroves sequester 5 times more carbon, methane and nitrous oxides (in peatland soils) than rainforest trees.. they also provide coastal shielding against tsunamis and are therefore a tangible climate adaptation solution for countries which are facing sea level rise. You should definitely sign up to the Global Soil Partnership of the FAO, they are working to bring in policies on Soil Organic Carbon to mitigate climate change - your economic model could be highly interesting for them and their partners. GAME ON