Indicadores de avaliação ambiental em Áreas de Preservação Permanente (APPs) na sub-bacia do Rio Saracuruna RJ

• Autor(a) principal: Conceição, Rodrigo Silva da
• Data de Publicação: 2014
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/14291
• topic: Permanent Preservation Area; Environmental function; Matrix PSIR; The subbasin of Saracuruna River; Área de Preservação Permanente; Função ambiental; Matriz PEIR; Sub-bacia do Rio Saracuruna; Indicadores ambientais; Saracuruna, Rio de Janeiro (RJ); Áreas protegidas; CNPQ::OUTROS

Permanent Preservation Areas (PPAs) configure protected areas, covered or not by native vegetation, legally established by law. These areas have environmental functions that integrate with each other and are associated with their different categories. The study aimed the adaptation of the system of PSIR indicators (pressure, state, impact, and response) for integrated environmental evaluation of PPAs, with application in the sub basin of river Saracuruna, RJ. Specifically aimed: a) Survey of relevant legislation about PPAs, inserted in the context of the use and occupation of land and integrated environmental management; b) Delimitation of strip of PPAs, according to parameters defined by Brazilian Forest Code for each categorie in the area; c) Selection of environmental indicators related to the delimited PPAs considering its various categories and associated environmental functions; d) Evaluation of the potential and limitations of application of indicators of integrated evaluation in PPAs, involving the spatialisation of the information supported by Geotechnology, with a focus in the legitimization/interventions of the strips of PPAs on the subbasin under study. Methodologically involved the bibliographical research, including the survey of all the relevant environmental and legal framework about PPAs and the collect of the reference of letters of indicators, the physical and human characteristics of the subbasin, supporting the delimitation and pre-assessment of its PPAs; the selection of environmental indicators focused on integrated assessment of PPAs; the application, supported by geotechnology, of part of these indicators structured in PSIR cycles in view of the, exemplary, hierarchization of environmental functions by category group of PPAs; and, finally, the development of mapssynthesis of the situation of the bands of PPAs connected to the drainage and the relief of altitude, with a focus on legitimizing this bands. The review of specific and cross-cutting policies to PPAs and their incident plans testified a broad base for local or shared management of these bands, however, the delimitation of the PPAs depending on the local conditions does not exist yet. The letter-synthesis of indicators of integrated evaluation of PPAs in the subbasin included a set of 40 (forty) indicators, of which 26 (twenty-six) composed 2 (two) applied cycles and 6 (six) partially applied cycles. For the APPs related to drainage and relief of altitude were applied, respectively, indicators: a) pressure: Change of natural areas to disturbed areas and Evolution of urban area on slopes b) state: Waterproofing of soil and Environmental quality of the land ; c) impact: Critical areas of flooding and Areas of risk of landslides or mudslides ; and d) response: Basin plan and Risk areas recovered . Such cycles have attested to the accuracy of indicators of pressure and state in the evaluation of the preservation in PPAs, but were not able to explain alone the cause of impacts, which do not occur exclusively in these bands. Also showed a higher level of human disturbance in PPAs located in the lowland portion of the subbasin, especially on river banks. Therefore, actions that aim the supervision of legitimized PPAs are appropiate, as well as action that aimed the recovery of tracks with low human interference and the urban or priority interventions in degraded or impacted areas