Multitemporal Spatial Analysis of Land Use and Land Cover Changes in the Lower Jaguaribe Hydrographic Sub-Basin, Ceará, Northeast Brazil

Samuel Gameiro, Victor Nascimento, Douglas Facco, Giuliana Sfredo and Jean Ometto
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Samuel Gameiro: Research Center on Remote Sensing and Meteorology, Federal University of Rio Grande do Sul, Porto Alegre 91501-970, Brazil
Victor Nascimento: Research Center on Remote Sensing and Meteorology, Federal University of Rio Grande do Sul, Porto Alegre 91501-970, Brazil
Douglas Facco: Research Center on Remote Sensing and Meteorology, Federal University of Rio Grande do Sul, Porto Alegre 91501-970, Brazil
Giuliana Sfredo: Geosciences Department, Federal University of Rio Grande do Sul, Porto Alegre 91501-970, Brazil
Jean Ometto: Earth System Science Center, National Institute for Space Research, São José dos Campos 12227-010, Brazil

Land, 2022, vol. 11, issue 1, 1-17

Abstract: Aquaculture is currently one of the fastest growing food production systems globally, and shrimp is considered one of the most highly valued products. Our study area is the lower Jaguaribe River sub-basin (LJRSB), located in the northeastern part of Ceará in Brazil. The aquaculture activity in this area began in the early 1990s and is currently one of the largest shrimp producers in Brazil. This study generated a spatial-temporal analysis of vegetation index and land use and land cover (LULC) using remote sensing images from Landsat satellites processed using geographic information systems (GIS). The findings showed an increase in the water bodies class where shrimp farms are found. In addition, to help us discuss the results, data from the Global Surface Water Explorer was also used to understand this change throughout intra and interannual water variability. Besides shrimp farms’ intensification, agricultural areas in the LJRSB also increased, mainly in the irrigated perimeter lands (IPLs), causing a loss in the Caatinga native vegetation. In summary, over recent years, significant changes have been noticeable in the LJRSB coastal region, caused by an increase in shrimp farms mainly located on the Jaguaribe River margins, destroying the native riparian forest.

Keywords: aquaculture; caatinga; NDVI (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2022
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