Estudo do desenvolvimento urbano da bacia hidrográfica do Rio Ponte Grande, em Lages/SC

Lemos, Mayara Rafaeli; Becegato, Valter Antônio; Becegato, Vitor Rodolfo; Rosini, Daniely Neckel

doi:10.6008/cbpc2179-6858.2021.001.0029

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…According to Lemos et al (2021), the effects of changes in land use and occupation in the Ponte Grande River basin are perceptible over time, with a percentage increase in the urban area class equal to 16.55, 34.92, and 41.71% for 1984, 2003, respectively. Meanwhile, Mombach et al (2018 verified that floods were considered the main problem of the Carahá River basin through interviews with local inhabitants.…”

Section: Urban Growthmentioning

confidence: 99%

Assessment of economic impacts in flood events in Lages/SC, Brazil

Primo,

Rafaeli

2023

Rev. Bras. Ciênc. Ambient.

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Flood processes become increasingly harmful to communities due to factors such as climate change and land use. This study aims to evaluate the economic damages of flood events in an area of the urban basins of Lages/SC. Thus, four plans were considered for economic evaluation: one referring to conditions without protective measures and three with the application of elevation of structures at different heights, as well as two scenarios of the evolution of urban occupation. The rainfalls were obtained through the Gumbel probabilistic model to estimate the maximum accumulated precipitations over 5 days, with the hydrological modeling carried out at the HEC-HMS. The hydrodynamic modeling was performed in HEC-RAS through the simulation of a 1D model. The HEC-FDA model was used to perform the risk reduction analysis of damage caused by floods, where the expected annual damages (EAD) were calculated for the four proposed plans as well as for the urban growth scenarios. The results showed that the application of the mitigating measure of raising the structures reduced the EAD by up to 83.10%. As for the scenario of the evolution of urban growth, there was an increase in EAD of 62.09%, in the interval of 20 years. The HEC-FDA model has been demonstrated as good software for assessing the economic damage of floods in different scenarios, showing results that can help decision-makers in the development of public policies.

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Section: Urban Growthmentioning

confidence: 99%

Assessment of economic impacts in flood events in Lages/SC, Brazil

Primo,

Rafaeli

2023

Rev. Bras. Ciênc. Ambient.

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“…Em que pese sua importância, os rios têm sofrido grandes impactos nas últimas décadas, experimentando pressões causadas por intensos processos de crescimento populacional, o que gera deterioração da qualidade ambiental, eutrofização, redução da quantidade de água e comprometimento da capacidade de depuração (TIAN et al, 2021). No contexto brasileiro, ao contrário do que o Sistema Nacional de Recursos Hídricos prevê, a bacia hidrográfica em geral não é considerada como fator para gestão dos recursos fluviais, de forma que soluções alternativas, como encapsulamento e canalizações seguem sendo empregadas para alterar o curso natural dos rios (LEMOS et al, 2021). A situação foi ainda mais agravada pelo processo de êxodo rural do país, verificado sobretudo a partir da década de 1970, o que acelerou os impactos negativos sobre os rios, devido ao comprometimento da capacidade de resiliência dos sistemas ambientais urbanos face ao repentino aumento da população (PAIVA et al, 2020).…”

Section: Introductionunclassified

Rios Urbanos Em Poços De Caldas, Minas Gerais: Indicadores De Sustentabilidade E Segurança Ambiental

Da Silva,

Botezelli,

Riondet-Costa

et al. 2023

Rev. Contemp.

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O município de Poços de Caldas se desenvolveu ao longo do curso dos rios, os quais foram incorporados à sua paisagem urbana. O objetivo deste trabalho foi avaliar, através de indicadores, se a segurança e a sustentabilidade ambiental dos rios urbanos do município foram afetadas pela forma com que o planejamento urbano do município foi realizado. A metodologia se baseou na avaliação de indicadores de sustentabilidade e segurança ambientais, que buscaram averiguar a existência de tratamento de esgotos, controle de poluição, infraestrutura de gestão e monitoramento de enchentes e outros incidentes e participação popular no nos processos de gestão. Averiguou-se que durante o processo de planejamento urbano, o curso dos rios foi profundamente alterado, comprometendo os serviços ecossistêmicos associados. Cerca de 70% dos esgotos são lançados nos rios in natura, o que gera riscos à saúde da população. Verificou-se que o tratamento dos incidentes, como enchentes, ocorre de modo posterior a sua ocorrência, com disparo de avisos anteriores à ocorrência. Por fim, averiguou-se que não há sistema municipal de monitoramento dos riscos, sendo que estes são avaliados via convênio entre Prefeitura municipal, Universidade Federal de Alfenas e o Centro Nacional de Monitoramento e Alertas de Desastres Naturais (CEMADEN). Em âmbito geral, foi averiguado que a sustentabilidade ambiental é pouco efetiva. Como medidas prioritárias para contornar a questão, destacam-se o aumento do volume do tratamento de esgoto, incentivo à maior participação da população nas políticas de gestão ambiental, além da necessidade de realização de estudos para implementação de tecnologias de monitoramento ambiental e melhoria da sustentabilidade.

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“…The method commonly used to perform the diagnosis, monitoring and subsequent management of urban occupation is the analysis of the distribution and variation of urban land coverage, so that one can have the greatest knowledge about occupations and relate them to political decisions, regulatory actions, and land use (Lemos, Becegato, Becegato, & Rosini, 2021). However, it is common to use Remote Sensing (SR) and GIS techniques, associated with conventional methods of analysis, as important tools to perform effective urban management (De Barros & Lombardo, 2013).…”

Section: Introductionmentioning

confidence: 99%

The influence of urban and mineral expansion on surface temperature variation

Santos¹,

Santil²,

Carbone³

et al. 2022

Acta Sci Technol

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This study addresses the variations in surface temperature - Land Surface Temperature (LST) - in the urban network of the municipality of Paracatu, Minas Gerais State, Brazil, which has humid tropical climate of savannah (type Aw), and in the open pit mining activity located near its urban perimeter, between the years 1990 and 2019. The area was chosen because the municipality is the most important of its microregion, being an attractive pole of work due to the presence of several companies, with emphasis on the mining company Kinross Gold Corporation, which is one of the largest open pit mines and gold producers in Brazil. Images of LANDSAT-5 and 8 satellites were used, which underwent a resampling and standardization of pixels to become the same size. The satellite choice and the period of analysis was based on the beginning of mining activity in the municipality, and a year that was able to represent its current state. Subsequently, the LST calculations made available by the United States Geological Survey (USGS) were applied. When comparing the results of both areas of the first and last year of the series, there was an increase in the variation of the mean, minimum and maximum LST, a fact that is related with the suppression of vegetation for the growth of both areas. Such suppression, together with anthropic occupation, is responsible for one of the neighborhoods (28) that present the highest average variation of LST over the years. On the other hand, the neighborhood that presented the smallest variation on this parameter (47) was recently incorporated as a neighborhood in the city’s Master Plan because it is currently being occupied by the construction of an allotment, evidencing that the temporal variability of LST in the municipality occurs in relation to anthropic presence and its magnitude.

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Estudo do desenvolvimento urbano da bacia hidrográfica do Rio Ponte Grande, em Lages/SC

Cited by 4 publications

References 10 publications

Assessment of economic impacts in flood events in Lages/SC, Brazil

Assessment of economic impacts in flood events in Lages/SC, Brazil

Rios Urbanos Em Poços De Caldas, Minas Gerais: Indicadores De Sustentabilidade E Segurança Ambiental

The influence of urban and mineral expansion on surface temperature variation

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