Avaliação da cobertura de floresta de mangal no posto administrativo de Macuse -Namacurra, através do sensoriamento remoto

Abstract

Mangrove is an ecosystem of extreme importance for the productivity of species as it serves as a nursery for the protection of the environment from natural phenomena such as erosion, as well as biodiversity in coastal regions and socio-economic development. Most studies on the evaluation of mangrove cover in the world, as well as in Mozambique, have shown that the mangrove is being reduced, with the main factor being mangrove cutting to the practice of aquaculture, wood and coal production, and natural factors floods, cyclones, coast line advancement and retreat. The evaluation of the mangrove forest cover at Macuse administrative post showed an increase of the total mangrove cover area of 55.6 hectares corresponding to 11.8%, based on the analyzed images of the years 2006 (with 416.6 hectares) and 2016 (with 472.2 hectares) . Dense mangrove showed a reduction in 2016 (48.9 hectares) compared to previous ones in 2006 (65.5 hectares). Along the channel of the Macuse estuary and its arms areas were identified where mangrove recovery associated with the coastline advance factor and mangrove loss associated with the coastline retreatment factor and anthropogenic actions were identified. The strong inspection carried out in this area is the main factor that contributed to the maintenance of the mangroves, despite the existence of clandestine cuts due to lack of solid knowledge of the importance of this ecosystem. Raising the awareness of the local community about the importance of mangroves would reduce these levels of clandestinely