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Perception and quantification of trees in the urban area of São Carlos, SP

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Author(s):
Sabrina Mieko Viana
Total Authors: 1
Document type: Doctoral Thesis
Press: Piracicaba.
Institution: Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC)
Defense date:
Examining board members:
Demóstenes Ferreira da Silva Filho; Daniela Biondi Batista; Maria de Assunçao Ribeiro Franco; Milton Cezar Ribeiro; Yuri Tavares Rocha
Advisor: Demóstenes Ferreira da Silva Filho
Abstract

The trees, as one of the most meaningful elements connecting people with the nature, and the usual exclusion of this element due the competition with other urban infrastructures, may be interpreted as a symptom of inhabitants alienation from natural environment.. By considering this scenario, is important for the management improvement know the structure and distribution of the urban forests as well as comprehend how people are related with the environment and the trees, in order to know the causes and how to work for different sectors of the population. The study aimed at contributing to the knowledge expansion on indexes to quantify and analyze the Tree Canopy Cover (TCC), using as model of the city of São Carlos (SP, Brazil), as well as assess the relationship between the residents perception and the amount of TCC. Images of satellite Worldview 2 were used for quantify and analyze the distribution of TCC and the UFI. Moreover the perception of the population was surveyed by using structured questionnaires and direct observation in areas of different percentage of TCC. According to the results, even though the UFI (1,26) and the proportion of TCC (26,27%) are significant for the entire urban area, the values are not quite well distributed amongst the regions of the city. The highest values of TCC and UFI were concentrated in the north and northwest regions, while the lowest values were located in central and south areas. Excepting the universities campi (UFSCar and USP 2) and the industrial districts, the highest TCC percentage occurred in the Samambaia\'s gated community (29,6%) and the lowest in the Antenor Garcia, Cidade Aracy and President Collor neighborhoods (4,88%). Furthermore, the analysis of coverage within each region indicated the predominance of single trees or small groups, with low connectivity amongst them. The overall population recognizes benefits provided by the trees. However, attributed features such as \'dirt\', caused by fallen leaves, damaged sidewalks, safety problems related to violence and risk of tree falling, were associated by respondents as the biggest negatives points about the trees in the city. (AU)

FAPESP's process: 10/09400-3 - Environmental perception and its relationship with quantitative aspects on urban forestry of São Carlos, SP
Grantee:Sabrina Mieko Viana
Support Opportunities: Scholarships in Brazil - Doctorate