GEOTECNOLOGY IN DIAGNOSIS OF CONFLICTS OF USE OF THE SOIL FROM A MICROBASIN OF THE CITY OF ALTA FLORESTA- MT

• Autor(a) principal: Nunes, Emanoel Junior Da Silva
• Data de Publicação: 2015
• Outros Autores: Silva, Edgley Pereira da, Souza, Eliana de, Rocha Filho, Jesulino Alves da, Silva, Diana Suzete Nunes da
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Ciência Florestal (Online)
• Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/19619
• topic: permanent preservation areas; supervised classification; environmental law; soil coverage.; áreas de preservação permanente; classificação supervisionada; legislação ambiental; cobertura do solo.

The purpose of this study is to use geotechnology in mapping the soil cover and diagnose conflicts of land use in permanent preservation areas (PPA) for a microbasin with an area of ​​17,759 ha located in the municipality of Alta Floresta, in Mato Grosso State. The demarcation of PPA was based on the Complementary Law No. 412 of the state of Mato Grosso, December 13, 2010. To carried out the work, it were used hydrographic map and digital elevation model for the demarcation of the microbasin and that the conservation areas. The mapping of land cover was carried out by supervised classification algorithm MaxVer into ENVI 4.2 software, in a satellite image of high spatial resolution from SPOT 5 sensor, acquired in 2008. The data processing, adjustment of the projections, file creation and cross-vector maps of land cover and conservation areas were done in ArcGIS 9.2. The land cover classes mapped follow: forest, pasture, water, bare soil and urban settlement. The total area of ​​PPA (1,966.51 ha) represents 11.1 % of the microbasin area, of which most of misuse occurs with pasture (47.7 %), forest areas represent 39.5 % of total PPA. The class of exposed soil and urban occupation represent respectively 26.5 and 110.1 ha, equivalent 6.9 % of the preservation area. It could be concluded that, the image used, was found satisfactory for mapping the land cover classes on the study area. The mapping and crossing of information showed that a area of 1,074.92 ha is in conflict with the current environmental legislation, as there are any forms of human activity. The areas with improper use account with 54.6 % of the total PPA and are represented by pasture, bare soil and urban settlement.