Fire risk map for the Serra de São Domingos Municipal Park, Poços de Caldas, MG

CERNE

Pereira, José Aldo Alves²  Cipriani, Henrique Nery¹  Silva, Rossi Allan²  Freitas, Sávio Gouvêa de³  Oliveira, Luciano Teixeira de² 

[1] Universidade Federal de Viçosa, Viçosa, Brasil$$;Universidade Federal de Lavras, Lavras, Brasil$$;Instituto Estadual de Florestas, Oliveira, Brasil$$

关键词: Atlantic Forest;    conservation unit;    fire prevention;    on-the-screen visual image interpretation.;   

DOI  :  10.1590/S0104-77602011000100009

来源: Universidade Federal de Lavras-UFLA

【 摘 要 】

This study constructed a fire risk map for the Serra de São Domingos Municipal Park (SSDMP), southern Minas GeraisSate, Brazil, which harbors Atlantic Forest remnants and endangered species. Geo-processing techniques were used for producing a preliminary risk map for altimetry (a), land slope (e), slope orientation (d), land-use/cover (u) and influence of roads and buildings (i). After, the risk maps were overlaid to produce a structural fire index (SFI)-based risk map for the Park. The SFI was calculated by using the formula SFI = 0,35i + 0,30u + 0,15d + 0,10a + 0,10e. The risks classes were classified as low (0.0-0.9), moderate (1.0 1.9), high (2.0-2.9), very high (3.0-3.9) and extreme (4.0-5.0). All data were processed with 2.5 m base spatial resolution by using the ArcView GIS. According to the SFI calculated, the SSMP area can be divided into the following fire risk zones: Low (0.93%), Moderate (61.77%), High (31.32%), Very High (4.79%) and Extreme (1.19%). The main risk factor is due to the influence of roads and buildings and most fires start due to anthropogenic causes. The low and moderate risk classes comprehend most of the rainforest area. Clearings and grasslands fit mainly the High risk class. The most vulnerable area of SSDMP was the Northern area bordering pasture, crops and eucalypt fields. The SFI map can be a valuable tool for elaborating a fire prevention plan in a small conservation unit when few climate and fire occurrence data are available.

【 授权许可】

Unknown