Proximidade de rodovias pode influenciar a fragmentação florestal? Um estudo de caso no norte do Rio Grande do Sul

Biotemas

Paulo Afonso Hartmann¹  Tiago Rezzadori¹  Marilia Teresinha Hartmann¹ 

[1]UFFS - Universidade Federal da Fronteira Sul. Campus Erechim.

关键词: Ecologia de Estradas;    Fauna;    Mapeamento;    Paisagem;   

DOI  :  

学科分类：生物科学（综合）

来源: Universidade Federal de Santa Catarina * Centro de Ciencias Biologicas

【 摘 要 】

http://dx.doi.org/10.5007/2175-7925.2016v29n3p21The establishment and use of roads interfere with the atmosphere, soil, vegetation, fauna, and human communities surrounding them. One of the main effects caused by the implementation and operation of a road is fragmentation of natural landscapes, which consequently generates edge effects and isolation of populations. Thus, this study aimed to quantify and compare the distribution of vegetation cover in areas with and without ecological influence of roads in the Alto Uruguai region, northern Rio Grande do Sul, Brazil. To do this, a geo-relational database was created, where satellite images taken by Landsat V and CBERS 2b were entered. The size and amount of forest fragments were estimated in areas with and without influence of roads. The area with ecological influence of roads had less and smaller sized forest fragments when compared to the area without ecological influence. High forest fragmentation seems to be enhanced by proximity to roads in northern Rio Grande do Sul, contributing to isolate and reduce the size of native populations that occupy these areas. 

【 授权许可】

Unknown