Produção Nacional
A Utilização de SIG no Auxílio da Análise dos Impactos Ambientais Causados pelas Usinas Hidroelétricas Passo São João e São José Localizadas no Rio Ijuí - RS
2015; Associação Sergipana de Ciências; Volume: 11; Issue: 2 Linguagem: Inglês
ISSN
1808-2793
AutoresOlímpio Rafael Cardoso, Marianne Macedo Goulart Dambrós, Renata Azevedo Xavier, Carlos Vinícius da Cruz Weiss, Natália Peppes Gauer,
Tópico(s)Environmental and Ecological Studies
ResumoIn Brazil hydropower is the matrix for power generation, with the remainder distributed among the other generation sources, wind, solar and thermal. Today, hydroelectricity accounts for 71% of total electricity generated in the country. Thus, hydroelectric developments are on the rise in the country, which somehow brings beneficial, but also impacts the environment. The objective of this work is to demonstrate the practicality of using GIS tool to aid in the analysis of environmental impacts in Rio Ijui after construction cascading two hydroelectric plants, UHE Passo Sao Joao and UHE Sao Jose. The methodology is to establish different evaluation physical criteria and their respective weights, so the distance criteria of urban seats, distance between buses, flooded area, installed capacity and yield were measured to give a classification (low, medium and high impact to the environment). To give accurate results of each physical criteria, was used Geographic Information System (GIS) and ArcMap software. By performing the average impacts according to agreed criteria, UHE Passo Sao Joao was classified as causing moderate to high impact on the environment and Sao Jose as causing low to medium impact. The criterion that influenced this final impacts UHEs were: distance between venues urban that damaged the UHE Passo Sao Joao that is very close to the town of Roque Gonzales, and wetlands both UHEs that go beyond the 13 km² considered this methodology.
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