Multitemporal Analysis of Land Use and Cover in the Marine Extractive Reserve of Bay do Iguape – Recôncavo Baiano

Multitemporal land use and land cover analysis of the Iguape Bay Marine Extractive Reserve – Bahian Recôncavo

Abstract

The present work aimed to analyze the dynamics of land use and coverage in the Marine Extractive Reserve of Baía do Iguape, using Landsat images from 1986, 1994, 2003, 2017 and 2022. RESEX Baía do Iguape, covers the municipalities of Cachoeira , São Félix and Maragogipe, located in Recôncavo Baiano.
The methodological procedures included bibliographic research, organization of a geographic database in a GIS environment, data tabulation, digital image processing and creation of maps. To carry out land use and cover mapping, the vectorization method was chosen.
The accuracy of the mappings for the global accuracy and Kappa indices were above 90%. At RESEX Baía do Iguape, over the last 36 years (1986 to 2022), there has been an expansion of the mangrove area of ​​1.8 km2, a reduction in the agricultural class and an increase in dense rainforest vegetation. In this context, multi-temporal analyzes of land use and cover are considered essential, which allow knowing the targets that are exposed to the likely impacts of rising mean sea levels, contributing to the planning and coastal management of the reserve and the formulation of policies public projects aimed at the fishing communities that are located there.