Fragility and integrity of land use and coverage patterns in the Murucupi River hydrographic basin, Barcarena, Pará
DOI:
https://doi.org/10.6008/CBPC2179-6858.2022.001.0029Keywords:
Transition matrix, Geotechnologies, Vegetal cover, Mineral activity, Environmental accidentsAbstract
The occupation and consolidation of the Amazonian territory express different particularities related to the dynamics of land use and land cover class conversions. And in order to understand the processes that influenced the fragility and integrity of these patterns, which make up the current scenario of the Murucupi river basin, geotechnologies were used to recognize the features of the land surface and a transition matrix to quantify the changes in use. and coverage, as well as defining and analyzing the types of conversion preferences and class persistence over 30 years. The results showed significant changes in the forest vegetation class, indicating fragility due to the suppression of more than 1,200ha, and potential area gains of the secondary vegetation classes and anthropized area under this class. The expansion and integrity of these two classes are evidenced by the increase in urban centers, the industrial complex, plantation areas and natural regeneration. The transition of use and coverage in the basin is strongly related to the mineral activity carried out by companies installed in the region, approximately 36% (407.49ha) of the anthropized class (1,120.49ha), corresponds to the industrial complex and the DRS1. installations, population growth led to the expansion of urban centers in the central area, leaving only a few fragments of forest vegetation in the northeast portion and near the mouth of the basin. These changes in vegetation cover and the inefficiency of planning and inspection led to the emergence of serious environmental accidents, which still impact the subsistence and way of life of the local population.
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