THE planting of mangroves by President Joko Widodo and other world leaders at the sideline event of the G20 Summit in Bali in November could be for nothing if it is not accompanied by real action. The fact is that although with 3.3 million hectares—Indonesia has the greatest expanse of mangrove forest in the world—the rate of deforestation in Indonesia is 52,000 hectares per year. Mangrove forests in Indo