## 4 Discussion
The SV class was observed in the Cerrado and Pantanal biomes and in their transitions to the Amazon biome [2,44,50], close to ILs, PAs and highways from the north, in the Parque do Tumucumaque IL, in the State of Para, around the BR-210 and 174 highways, and in the Sao Marcos and Raposa Serra do Sol IL, in the State of Roraima, and in the Serra do Araca State Park PA, in the State of Amazonas. In the central part, the SV class was observed in the agricultural regions of Mato Grosso, around the BR-163 highway to Santarem--PA and the BR-230 highway, from the State of Maranhao to Labrea--AM, while into the south around the BR-364 highway to Mancio Lima--AC [4,29,31,50,88]. The WSV class was observed in the northeast, from the Amazon River to its mouth in the Pacific Ocean, in Oiapoque--AM and in the east, around BR-230 highway, in the State of Maranhao, the Tapajos River, in the State of Para, and in the entire perimeter of the BR-364 highway, especially in the cities of Comodoro, Sapezal and Campo Novo do Parecis--MT, some of the main soy producing cities in the State [34], and nearby Nambikwara IL [31,50,88]. In the gradient from northeast to south of the BLA, large areas of classes GL and CL were observed, appearing close to each other, mainly in the region of the \"arc of deforestation\" [2,89], a transition between Cerrado and Amazon biomes [44], which extends from the northeast of the State of Para to the east of the State of Acre, accounting for the largest expanding agricultural frontier in the world [2,30,31,85]. The GL occurred mainly in the Middle East, where the Jalapao State Park and the Serra Geral Ecological Station PA are located, in the State of Tocantins, and the Nascentes do Rio Parnaiba National Park PA, in the State of Maranhao [4,50]. A significant portion was observed northeast of the Marajo island and north of the State of Roraima, both regions on the northern flank of the BLA. Other areas were observed in the central region of the Legal Amazon, such as the Parque do Tumucumaque and Munduruku, Bau, Menkragnoti, Panara, Paresi and Parque do Xingu IL, in the States of Para and Mato Grosso [50,88]. This class is often reported as the vegetative class of high anthropization [8,42] and presents a high risk of frequent fires [15,23,90]. As shown by the district of Santo Antonio do Matupi, the intensification of the land use and land cover changes processes occur in ILs and PAs, such as the Campos Amazonicos National Park, the Aripuana National Forest, Campos de Manicore Environmental PA and the Manicore Biological Reserve, which were created with the aim of protecting the biological diversity and control the process of occupation of the region [82]. In addition, the district of Santo Antonio do Matupi is close to the Diahui, Piraha, Sepoti, Tenterim Marmelos, and Tenterim do Igarape Preto IL, which are also responsible for environmental, ecological, and social preservation [2,25]. However, this district is known to be an important timber extraction region and, therefore, a major destroyer of mature forests. This fact was confirmed when losses of primary forests in Santo Antonio do Matupi were observed, especially between 2004 and 2018, when 63.28% of the area was converted into pastures [83]. These intensification processes were induced by the political scenario in Brazil, as a result of significant changes in environmental laws, policies and regulations that favored deforestation and the expansion of agricultural activities in areas close to the forest [24,28,29,91,92,93]. Thus, in the BLA, the conversion of forests to pastures and agricultural lands had relatively high emissions, exceeding 340 Tg C year\({}^{-1}\) in 2010 [20], because the drought of this year was likely to have influenced these extremely high emissions [40]. In addition, those areas with the greatest fragmentation of forests and close to major roads, pasture areas, agriculture and Cerrado regions are the areas with the highest risk of frequent fire [15; 23; 35; 36; 90; 94].