ANÁLISE DA CONECTIVIDADE DOS FRAGMENTOS NA BACIA HIDROGRÁFICA DO TIETÊ-JACARÉ
Keywords:
Análise da paisagem; Redes ambientais; Índices métricos de conectividade e de fragmentação; Bacia hidrográfica.Abstract
The analysis of landscape fragmentation is done through land use mapping, where it is possible to identify different spots and determine their degree of fragmentation or connectivity. This work has the objective of analyzing the structural connectivity of the landscape present in the Tietê-Jacaré Hydrographic Basin, through the application of the structural connectivity index of the landscape, with the purpose of evaluating the dynamic and temporal process of natural vegetation fragments of 2007 and 2017. The information was analyzed through Geographic Information Systems (GIS) and metric indexes of connectivity and fragmentation. Considering the interval of 10 years there was an expansion of agricultural activities with an increase of 24,507.53ha of cultivated areas and loss of native vegetation areas of 32,149ha. It was also evidenced the decrease in the number of fragments, as well as the increase in the average size of the fragments, derived from the growth of the agricultural matrices with consequent reduction of the diversification of the fragments of the classes of use and land cover. Fragmentation indexes, when expressing the state of configuration of the landscapes, were presented as important tools in the diagnosis aimed at the conservation of ecosystems. These indices allowed the comparison not only of natural fragments, but of all classes of land use and land cover, which is essential in regional planning.
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