Sri Lanka plans to rehabilitate state mangrove lands that have been abandoned after using for shrimp farming and salterns as part of a project to increase the extent of mangrove lands by 10,000 Hectares.The cabinet of ministers has approved a proposal made by President Maithripala Sirisena in his capacity as the Minister of Mahaweli Development and Environment, to take back the state mangrove lands that were given on lease for aquaculture and now abandoned.