Evolução temporal de fragmentos de vegetação nativa no município de Agudos-SP, utilizando fotografias aéreas.

• Autor(a) principal: Neves, Débora Andréia
• Data de Publicação: 2010
• Outros Autores: Barros, Zacarias Xavier de [UNESP], Engel, Vera Lex [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.17224/EnergAgric.2010v25n2p20-31; http://hdl.handle.net/11449/137481
• topic: Floristic inventory; Phytosociological inventory; Phytophysiognomy; Cerrado; Levantamento florístico; Levantamento fitossociológico; Fitofisionomia; Cerrado

The combination of the aerial mapping and forest inventory as processes will allow a critical, detailed and proper analysis, with agile conclusion of study object, i.e., the forest. Then, it would be possible to know if the area studied is a Savannah? Objectives: to evaluate the temporal forest evolution using air photographs; and to evaluate the occurrence of wood and not wood native species using floristic and phytosociological survey and evaluating the general aspect of the natural regeneration of these fragments. The two studied areas together are approximately 110 ha, piece of a private forest located in the city of Agudos, SP. Air photographs of the years of 1962, 1972, 1979, 2000 and 2006 were used to prepare the time evolution. A floristic and phytosociological inventory were made to know the forest structure. Phytophysiognomic class was delimited in each fragment through an aerophotogrammetry analysis. Structure, density, dominance and frequency (absolute and relative); index of importance value; index of value of covering and the diversity indices of Shannon, Simpson and Equity,were calculated with the software Fitopac 1.5 and Mata Nativa 2. Time evolution showed the modifications in the fragments through the years and characterized the areas in six determined phytophysiognomic class. The floristic and phytosociological surveys presented the current condition of the fragments, transition between Cerrado lato sensu and the seasonal semi deciduous forests. Despite of the anthropic actions in the region, forest fragments regenerate and present recovered characteristics. These results of the floristic and phytosociological surveys have been compared among themselves. The use of aerophotogrametry mapping with phytosociological techniques provided a physiognomic analysis of the forest and surrounding areas, identifying the interaction that exist between both. This technique is recommended for the study of native forest fragments.