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The concept of landscape structure refers to the study of the landscape from the measurement and quantification of its structural and spatial aspects. The objective of this article is to evaluate the landscape metrics in the extreme western of São Paulo State, Brazil. For this, we used satellite image information and a Geographic Information System to identify the degree of landscape shredding and the isolation. As results, we verified that the area is covered by anthropic uses, which represented 73.92%, and the rest is distributed in natural areas (wetland, island and forest fragments and water corpus). When analyzing the area index, referring to the size of the fragments, we could identify that the highest percentages are concentrated in pasture (42.51%) and agriculture (28.58). The analyzed indexes confirm that the fragmentation of the landscape is expressive and undergoes intense perturbations. [ABSTRACT FROM AUTHOR]

Rondônia state is among those that make up the Western Amazon region, which had the largest deforested area. This occurred due to the National State's option for private land ownership and capitalist expansion, to the detriment of conservation and traditional forms of use. Thus, the objective is to carry out the dynamic modeling of deforestation from 2015 to 2050 in the state of Rondônia. Methodology was contemplated by environmental modeling and decision making based on the Geographic Information System (GIS). Dynamic modeling of deforestation was developed using the software "DINAMICA EGO". Results revealed that the advance of deforestation until 2015 occupied 37.68% of the area of the state of Rondônia and will reach 54.87%, by 2050. In addition, deforestation will be greater in areas close to the road network, urban areas and areas already deforested. On the other hand, conservation of vegetation will be more expressive with special areas, indigenous lands and conservation units. Finally, from the projection map of the removal of vegetation for the year 2050 it was possible to verify that the removal of vegetation will be greater in the northwestern portion, especially in the municipality of Porto Velho. [ABSTRACT FROM AUTHOR]